DOCSLIB.ORG

Thermo-Responsive Poly(N-Isopropylacrylamide) and Its Critical Solution Temperature Type Behavior in Presence of Hydrophilic Ionic Liquids

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Thermo-Responsive Poly(N-Isopropylacrylamide) and Its Critical Solution Temperature Type Behavior in Presence of Hydrophilic Ionic Liquids University of Massachusetts Amherst ScholarWorks@UMass Amherst Masters Theses Dissertations and Theses March 2015 Thermo-Responsive Poly(N-Isopropylacrylamide) and its Critical Solution Temperature Type Behavior in Presence of Hydrophilic Ionic Liquids Purnendu K. Nayak University of Massachusetts Amherst Follow this and additional works at: https://scholarworks.umass.edu/masters_theses_2 Part of the Engineering Commons, Life Sciences Commons, Medicine and Health Sciences Commons, and the Physical Sciences and Mathematics Commons Recommended Citation Nayak, Purnendu K., "Thermo-Responsive Poly(N-Isopropylacrylamide) and its Critical Solution Temperature Type Behavior in Presence of Hydrophilic Ionic Liquids" (2015). Masters Theses. 165. https://doi.org/10.7275/6401325 https://scholarworks.umass.edu/masters_theses_2/165 This Open Access Thesis is brought to you for free and open access by the Dissertations and Theses at ScholarWorks@UMass Amherst. It has been accepted for inclusion in Masters Theses by an authorized administrator of ScholarWorks@UMass Amherst. For more information, please contact [email protected]. THERMO-RESPONSIVE POLY(N-ISOPROPYLACRYLAMIDE) AND ITS CRITICAL SOLUTION TEMPERATURE TYPE BEHAVIOR IN PRESENCE OF HYDROPHILIC IONIC LIQUIDS A Thesis Presented by PURNENDU KUMAR NAYAK Submitted to the Graduate School of the University of Massachusetts Amherst in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN CHEMICAL ENGINEERING FEBRUARY 2015 Chemical Engineering © Copyright by Purnendu Kumar Nayak 2015 All Rights Reserved THERMO-RESPONSIVE POLY(N- ISOPROPYLACRYLAMIDE) AND ITS CRITICAL SOLUTION TEMPERATURE TYPE BEHAVIOR IN PRESENCE OF HYDROPHILIC IONIC LIQUIDS A Thesis Presented by PURNENDU KUMAR NAYAK Approved as to style and content by: Harry Bermudez, Chair David M. Ford, Member Paul Dubin, Member John Collura, Interim Department Head Department of Chemical Engineering ACKNOWLEDGEMENTS First and foremost I would like to thank all the people who have inspired me during this study. I take this opportunity to thank my advisor, Prof. Harry Bermudez for his motivation and support. I also thank him for being my mentor during my graduate studies at the University of Massachusetts Amherst and sharing his wide knowledge and intellect. His valuable advice has been a constant source of support and encouragement, always inspiring me. I would like to thank my committee; Prof. David M. Ford and Prof. Paul Dubin for their suggestions and remarks especially towards the end of my thesis. This work has been supported by NSF CAREER award (DMR-0847558) to H.B., and in part by the NSF MRSEC atvUMass-Amherst (DMR-0820506). I dedicate this thesis to my father Mr. Harimohan Nayak and my mother Mrs. Rajanandini Nayak, whose blessings have helped me to achieve success in my life. I also thank my elder brother Suvendu for his moral support and my deepest thanks to Anand, Andreas and Lang at UMASS who have encouraged me to attain my goals throughout my graduate studies and for their priceless discussions. I would also like to express my heartfelt thanks to my friends, current and previous lab mates. I am also grateful to all the professors who inspired interest in the courses I chose and made it a unique learning experience for me during my Masters at the University of Massachusetts Amherst. iv ABSTRACT THERMO-RESPONSIVE POLY(N-ISOPROPYL ACRYLAMIDE) AND ITS CRITICAL SOLUTION TEMPERATURE TYPE BEHAVIOR IN PRESENCE OF HYDROPHILIC IONIC LIQUIDS FEBRUARY 2015 PURNENDU KUMAR NAYAK B. Tech., INSTITUTE OF CHEMICAL TECHNOLOGY MUMBAI, INDIA M.S.CHE., UNIVERSITY OF MASSACHUSETTS AMHERST Directed by: Professor Harry Bermudez Thermo-responsive homopolymer poly(N-isopropylacrylamide), is a widely studied and used polymer. Our recent observations on thermal behavior of aqueous solutions of this polymer requires a short overview of existing results in order to understand the formation of different phases, both stable and unstable with the addition of hydrophilic Ionic liquids (ILs) 1-Butyl-3- methylimidazolium tetrafluoroborate ([BMIM][BF4]), 1-Butyl-3-methylimidazolium acetate ([BMIM][OAc]) and 1-Butyl-3-methylimidazolium thiocyanate ([BMIM][SCN]) to the system. PNIPAM is soluble in cold water due to its inter- and intramolecular hydrogen bonding but phase separates upon heating at T > 32℃, which is its lower critical solution temperature (LCST) [1, 2]. PNIPAM exists in an expanded coil like conformation in water below its LCST which gives a transparent homogenous solution but at T > LCST it undergoes hydrophobic collapse marked by cloudiness of solution and conformational change from coil to globule state [3, 4]. All aqueous PNIPAM solutions undergo phase separation or cloud point transition at T > 32 ℃, regardless of the molar mass of the polymer [5]. v Room temperature Ionic liquids (ILs) are unique designer fluids because of the novel physico- chemical properties arising from their structure, which have tremendous implications in the field of IL as solvents or co-solvents for polymeric solutes [6] [7] [8]. During recent years a number of different imidazolium based ILs have also been tested for solubilization and stabilization of proteins as well as polymers due to hydrogen bond formation of the IL ions [9] [10]. Recent studies have shown that certain imidazolium based ILs can decrease the LCST of PNIPAM aqueous solution by hydrophobic collapse/aggregation of the PNIPAM chains [11], as well as some can induce an upper critical solution temperature (UCST) behavior of PNIPAM in neat IL solution [12]. Even so, experimental studies of such phase transition/ instability of thermoresponsive polymer-IL systems has been a challenging task. In this research we have explored the critical solution temperature (CST) type phase behavior of multicomponent systems i.e. PNIPAM in solution media of water, neat IL and aqueous solutions of IL. The overall fundamental challenge is to understand how the interactions among the components control both structure and dynamics of PNIPAM network in solution. For example the disruption of hydrogen bonding or desolvation interactions between blocks of a PNIPAM molecule and solvent molecules in aqueous mixtures that lead to a LCST type transition at higher temperatures. Interestingly, it was found in our case that PNIPAM shows both LCST and UCST-type phase transition in some aqueous solutions of hydrophilic IL [BMIM][BF4]. It was found for the first time that this IL can influence the LCST type behavior of PNIPAM in aqueous solutions based on our visual and experimental cloud point (CP) observations. In our experiments the effect of the ILs [BMIM][BF4] and [BMIM][OAc] is qualitatively similar to influence of Kosmotropic salts on the LCST of aqueous PNIPAM solutions as predicted by the Hofmeister series [13]. Keywords: PNIPAM, imidazolium, ionic liquid, LCST, UCST, phase behavior vi TABLE OF CONTENTS Page ACKNOWLEDGEMENTS ............................................................................................ iv ABSTRACT .......................................................................................................................v LIST OF FIGURES ......................................................................................................... ix THESIS OUTLINE ............................................................................................................1 1 INTRODUCTION........................................................................................................3 1.1 Motivations ........................................................................................................................ 3 1.2 Thermoresponsive nature of Poly (N-Isopropylacrylamide) ........................................ 6 1.3 PNIPAM and its applications .......................................................................................... 8 1.4 The CST transition of PNIPAM .................................................................................... 10 1.5 Hofmeister effect of ionic liquid anions in aqueous solutions ..................................... 12 1.6 Ionic liquid as a media for self assembly of polymers ................................................. 16 2 CRITICAL SOLUTION BEHAVIOR OF POLY(N- ISOPROPYLACRYLAMIDE) IN PRESENCE OF HYDROPHILIC IONIC LIQUIDS ...........................................................................................................................19 2.1 Introduction ..................................................................................................................... 19 2.2 Materials and Methods ................................................................................................... 21 2.2.1 Materials ..................................................................................................................... 21 2.2.2 Sample Preparation ..................................................................................................... 22 2.2.3 Turbidity Measurements ............................................................................................. 22 2.3 Cloud point phenomenon in PNIPAM solutions .......................................................... 23 2.3.1 Phase Behavior of poly(N-isopropylacrylamide) in IL Aqueous Solutions ............... 23 2.3.2 Critical solution behavior of PNIPAM in IL/water mixtures: Visual cloud point observations and Turbidimetry measurements ........................................................... 26 2.3.3 Comparison between PNIPAM-32K
Load more

Recommended publications
  • Phase Separation Phenomena in Solutions of Polysulfone in Mixtures of a Solvent and a Nonsolvent: Relationship with Membrane Formation*
    Phase separation phenomena in solutions of polysulfone in mixtures of a solvent and a nonsolvent: relationship with membrane formation* J. G. Wijmans, J. Kant, M. H. V. Mulder and C. A. Smolders Department of Chemical Technology, Twente University of Technology, PO Box 277, 7500 AE Enschede, The Netherlands (Received 22 October 1984) The phase separation phenomena in ternary solutions of polysulfone (PSI) in mixtures of a solvent and a nonsolvent (N,N-dimethylacetamide (DMAc) and water, in most cases) are investigated. The liquid-liquid demixing gap is determined and it is shown that its location in the ternary phase diagram is mainly determined by the PSf-nonsolvent interaction parameter. The critical point in the PSf/DMAc/water system lies at a high polymer concentration of about 8~o by weight. Calorimetric measurements with very concentrated PSf/DMAc/water solutions (prepared through liquid-liquid demixing, polymer concentration of the polymer-rich phase up to 60%) showed no heat effects in the temperature range of -20°C to 50°C. It is suggested that gelation in PSf systems is completely amorphous. The results are incorporated into a discussion of the formation of polysulfone membranes. (Keywords: polysulfone; solutions; liquid-liquid demixing; crystallization; membrane structures; membrane formation) INTRODUCTION THEORY The field of membrane filtration covers a broad range of Membrane formation different separation techniques such as: hyperfiltration, In the phase inversion process a membrane is made by reverse osmosis, ultrafiltration, microfiltration, gas sepa- casting a polymer solution on a support and then bringing ration and pervaporation. Each process makes use of the solution to phase separation by means of solvent specific membranes which must be suited for the desired outflow and/or nonsolvent inflow.
    [Show full text]
  • Vapor Condensation Under Nonequilibrium Conditions Victor Henry Heiskala Iowa State University
    Iowa State University Capstones, Theses and Retrospective Theses and Dissertations Dissertations 1963 Vapor condensation under nonequilibrium conditions Victor Henry Heiskala Iowa State University Follow this and additional works at: https://lib.dr.iastate.edu/rtd Part of the Chemical Engineering Commons, and the Nuclear Engineering Commons Recommended Citation Heiskala, Victor Henry, "Vapor condensation under nonequilibrium conditions " (1963). Retrospective Theses and Dissertations. 2935. https://lib.dr.iastate.edu/rtd/2935 This Dissertation is brought to you for free and open access by the Iowa State University Capstones, Theses and Dissertations at Iowa State University Digital Repository. It has been accepted for inclusion in Retrospective Theses and Dissertations by an authorized administrator of Iowa State University Digital Repository. For more information, please contact [email protected]. This dissertation has been 64—3956 microfilmed exactly as received HEISKALA, Victor Henry, 1938- VAPOR CONDENSATION UNDER NONEQUILIBRIUM CONDITIONS. Iowa State University of Science and Technology Ph.D., 1963 Engineering, chemical University Microfilms, Inc., Ann Arbor, Michigan VAPOR CONDENSATION UNDER NONEQUI LIBRIUM CONDITIONS ty Victor Eenry Heiskala A Dissertation Submitted to the Graduate Faculty in Partial Fulfillment of The Requirements for the Degree of DOCTOR OF PHILOSOPHY Major Subject: Nuclear Engineering Approved: Signature was redacted for privacy. In Charge of Ms^ Work Signature was redacted for privacy. Signature was redacted for privacy. Iowa State University Of Science and Technology Ames, Iowa 1963 ii TABLE OP CONTENTS Page I. INTRODUCTION 1 II. REVIEW OF LITERATURE "3 A. Liquid Drop Theory 3 B. Constant Number Theory 7 C. Statistical Mechanical Theory 8 D. Other Theories 9 III., THE THEORY 11 A.
    [Show full text]
  • Facile Fabrication, Properties and Application of Novel Thermo-Responsive Hydrogel
    Home Search Collections Journals About Contact us My IOPscience Facile fabrication, properties and application of novel thermo-responsive hydrogel This article has been downloaded from IOPscience. Please scroll down to see the full text article. 2011 Smart Mater. Struct. 20 075005 (http://iopscience.iop.org/0964-1726/20/7/075005) View the table of contents for this issue, or go to the journal homepage for more Download details: IP Address: 143.89.188.2 The article was downloaded on 01/06/2011 at 02:21 Please note that terms and conditions apply. IOP PUBLISHING SMART MATERIALS AND STRUCTURES Smart Mater. Struct. 20 (2011) 075005 (7pp) doi:10.1088/0964-1726/20/7/075005 Facile fabrication, properties and application of novel thermo-responsive hydrogel Jiaxing Li1,2, Xiuqing Gong1,XinYi1, Ping Sheng1 and Weijia Wen1 1 Department of Physics and Institute of Nano Science and Technology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 2 Key Laboratory of Novel Thin Film Solar Cells, Institute of Plasma Physics, Chinese Academy of Sciences, PO Box 1126, 230031, Hefei, People’s Republic of China E-mail: [email protected] Received 21 February 2011, in final form 5 May 2011 Published 31 May 2011 Online at stacks.iop.org/SMS/20/075005 Abstract The authors report a novel thermo-responsive hydrogel design based on the thermally induced aggregation of two kinds of nonionic surfactants: triblock copolymer poly(ethylene oxide)–poly(propylene oxide)–poly(ethylene oxide) (EPE) and 4-octylphenol polyethoxylate (TX-100). In the preparation of the hydrogel, agarose is used to host the aqueous surfactant molecules, allowing them to move freely through its intrinsic network structure.
    [Show full text]
  • Triton X-114 and SRP
    FUNDAMENTAL STUDIES AND POTENTIAL APPLICATIONS OF CLOUD POINT EXTRACTION By MELISSA ENSOR FREIDERICH A dissertation submitted in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY WASHINGTON STATE UNIVERSITY Department of Chemistry DECEMBER 2011 To the Faculty of Washington State University: The members of the Committee appointed to examine the dissertation of MELISSA ENSOR FREIDERICH find it satisfactory and recommend that it be accepted. ___________________________________ Kenneth L. Nash, Ph.D., Chair ___________________________________ Sue B. Clark, Ph.D. ___________________________________ James O. Schenk, Ph.D. ___________________________________ Glenn Fugate, Ph.D. ii ACKNOWLEDGMENT “There are two possible outcomes: if the result confirms the hypothesis, then you've made a measurement. If the result is contrary to the hypothesis, then you've made a discovery.” Enrico Fermi “Failure is simply the opportunity to begin again, this time more intelligently.” Henry Ford “A man who carries a cat by the tail learns something he can learn in no other way.” Mark Twain The preceding quotes, to me, sum up my graduate school experience. The past five years have not been easy and often times seemed impossible. I need to acknowledge and thank the people who helped me get to where I am today because without them I would not have completed this journey. First of all, I want to thank my husband, John. He has been my rock and sometimes only friend and source of comfort during my time in Pullman. John never wavered in his support of me and usually believed in me more than I believed in myself. I would not have completed my Ph.D.
    [Show full text]
  • Low Cloud Point Biodiesel 9/4/2014
    Shanti Johnson Low cloud Point Biodiesel 9/4/2014 Low Cloud Point Biodiesel Shanti Christopher Johnson Mentors: Dr. David Hackleman Dr. Travis Walker School of Chemical, Biological, and Environmental Engineering Oregon State University, 103 Gleeson Hall Corvallis, OR 97331 BioResource Research, Bioenergy Oregon State University, 137 Strand Agriculture Hall Corvallis, OR 97331 1 Shanti Johnson Low cloud Point Biodiesel 9/4/2014 _________________________________________________ _______________ David Hackleman, June 3, 2014 Department of Chemical, Biological, & Environmental Engineering _________________________________________________ _______________ Travis Walker June 3, 2014 Department of Chemical, Biological, & Environmental Engineering _________________________________________________ ________________ Katharine G. Field, BRR Director June 3, 2014 ©Copyright by Shanti C. Johnson, June 3, 2014 I understand that by project will become part of the permanent collection for the Oregon State University Library, and will become part of the Scholars Archive collection for BioResources Research. My signature below authorizes release of my project and thesis to any reader upon request. ____________________________________________ ______________ Shanti C. Johnson June 3, 2014 2 Shanti Johnson Low cloud Point Biodiesel 9/4/2014 Abstract The synergetic interplay between the removal of saturated methyl esters and the addition of deoxygenated fatty acids on depressing the cloud point temperature of biodiesel was investigated in this study. Canola biodiesel was produced in batch as a standard with a cloud point of 1.37 +/- 6.3 oC. Saturated methyl esters were removed from the standard via urea fractionation resulting in a low saturate biodiesel with a cloud point of -21.06 +/- 0.5 oC. Heptadecene was used as a standard for the major products produced from the deoxygenation of saturated fatty acids.
    [Show full text]
  • Chapter 2 Heating Oil
    Chapter 2 Heating Oil Chapter 2 Heating Oil and Its Properties Introduction to petroleum Refining oil Petroleum Fuels Our Modern Life Style Heating Oil is a fossil fuel, as are natural gas, propane, and coal. They are called More than six thousand products are fossil fuels because they are all made from made from petroleum. It is almost impos- the prehistoric plants and animals that form sible to get through a day without using fossils. dozens of petroleum products. Fossil fuels are hydrocarbons. Hydrocar- Oilheat is reliable bon molecules are the building blocks of Oilheat has a remarkable reliability life. Everything that is or was ever alive is record. Despite wars, embargoes, political made of molecules composed of hydrogen unrest, and natural disasters, oilheat keeps and carbon atoms. Carbon is normally a its customers warm. This reliability is solid, which, if not totally burned, becomes partly due to the variety of places where smoke and soot. Bonded together, hydro- crude oil is found, the resourcefulness of carbons can be a gas like propane, a liquid everyone from the refiners to the local oil like heating oil or a solid like candle wax. dealer, the flexibility of the delivery The hydrocarbon gases contain more system, and the stability and safety inherent hydrogen; the liquids and solids contain in heating oil. more carbon. Some Petroleum Products Gasoline, jet fuel, kerosene, diesel fuel, heating oil, propane, butane, lubricating oils, greases, waxes, asphalt, nylon, plastics, fertilizers, washing, cleaning and polishing products, medicines and drugs, photographic film, pesticides, waxed paper, food preservatives, food flavorings, beauty products, Plexiglas®, vinyl, audio and video tape, synthetic rubber, synthetic fibers, textiles, explosives, solvents, wax for candles, candy, matches, and pol- ishes, toiletries, crayons, roofing materials, floor coverings, carbon fiber, paints, lacquers, printing inks, DVDs and CDs.
    [Show full text]
  • Cloud and Pour Points in Fuel Blendsq
    Fuel 81A2002) 963±967 www.fuel®rst.com Short Communication Cloud and pour points in fuel blendsq J.A.P. Coutinhoa,*, F. Mirantea, J.C. Ribeirob, J.M. Sansotc, J.L. Daridonc aDepartamento de QuõÂmica da Universidade de Aveiro, 3810 Aveiro, Portugal bPetrogal, Re®naria do Porto, Apartado 3015, 4451-852 LecËa da Palmeira, Portugal cGroupe Haute Pression, Laboratoire des Fluides Compexes, Universite de Pau et des Pays de l'Adour, 64000 Pau, France Received 13 August 2001; revised 19 November 2001; accepted 29 November 2001; available online 4 January 2002 Abstract Cloud and pour points are part of the speci®cations for diesel fuel oils. This work studies the dilution of a diesel with a jet fuel of very low cloud point to produce fuel blends with lower cold characteristics. It is shown that the cloud point of the blend is a highly non-linear combination of the cloud points of the original fuels and is mainly dependent on the cloud point of the heavier ¯uid. Using a thermodynamic model previously proposed, an accurate description of the cloud point for the fuel blends is achieved. This model also allows an estimation of the amount of solid at the pour point showing that as little as 0.5±1wt% of solids are enough to gel the fuel. q 2002 Elsevier Science Ltd. All rights reserved. Keywords: Wax; Cloud point; Modelling 1. Introduction 2. Experimental At low temperatures crystals of paraf®ns form in fuels Both the diesel and the jet fuel used on this work are non- imposing restrictions to its use.
    [Show full text]
  • Descriptions of the Tests Performed
    DOT/FAA/AR-09/50 The Effects of Operating Air Traffic Organization NextGen & Operations Planning Jet Fuels Below the Specification Office of Research and Technology Development Freeze Point Temperature Limit Washington, DC 20591 January 2010 Final Report This document is available to the U.S. public through the National Technical Information Service (NTIS), Springfield, Virginia 22161. U.S. Department of Transportation Federal Aviation Administration NOTICE This document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The United States Government assumes no liability for the contents or use thereof. The United States Government does not endorse products or manufacturers. Trade or manufacturer's names appear herein solely because they are considered essential to the objective of this report. This document does not constitute FAA certification policy. Consult your local FAA aircraft certification office as to its use. This report is available at the Federal Aviation Administration William J. Hughes Technical Center's Full-Text Technical Reports page: actlibrary.tc.faa.gov in Adobe Acrobat portable document format (PDF). Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No. DOT/FAA/AR-09/50 4. Title and Subtitle 5. Report Date THE EFFECTS OF OPERATING JET FUELS BELOW THE SPECIFICATION January 2010 FREEZE POINT TEMPERATURE LIMIT 6. Performing Organization Code 7. Author(s) 8. Performing Organization Report No. Steven Zabarnick and Jamie Ervin 9. Performing Organization Name and Address 10. Work Unit No. (TRAIS) University of Dayton Research Institute 300 College Park Dayton, OH 45469-0116 11.
    [Show full text]
  • Biodiesel Buying in Cold Weather
    Background Diesel fuel is typically produced through refining and distillation of crude oil. Crude oil components range from methane and propane to gasoline to diesel fuel, to asphalt and other heavier components. The refining process separates the crude oil into mixtures of its constituents, based primarily on their volatility. Diesel fuels are on the heavy end of a barrel of crude oil. This gives diesel fuel its high BTU content and power, but also causes problems with diesel vehicle operation in cold weather when this conventional diesel fuel can gel. As the introduction of ultra low sulfur diesel fuel (15ppm) approaches it is anticipated that it will have possess more challenging cold flow characteristics than its predecessor LSD (500 ppm) by way of the additional processing required to remove the sulfur to these very low levels. A tremendous effort has been made over the years to understand how to deal with the cold flow properties of diesel fuel—or the low temperature operability—of existing diesel fuel. The cloud point and the cold filter plugging point (CFPP) or the low temperature filterability test (LTFT) commonly characterize the low temperature operability of diesel fuel. They are defined below, and the test methods used are generally accurate to plus or minus 3 to 5 °F. It is important to take into consideration these test variables and factor them into your cold flow development efforts in the field. Cloud Point: The temperature at which small solid crystals are first visually observed as the fuel cools. This is the most conservative measurement of cold flow properties.
    [Show full text]
  • Biodiesel Handling and Use Guide Fourth Edition Notice
    NREL/TP-540-43672 National Renewable Energy Laboratory Innovation for Our Energy Future September 2008 Biodiesel Handling and Use Guide Fourth Edition Notice This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessar- ily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States govern- ment or any agency thereof. Available electronically at http://www.osti.gov/bridge Available for a processing fee to U.S. Department of Energy and its contractors, in paper, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone: 865.576.8401 fax: 865.576.5728 email: mailto:[email protected] Available for sale to the public, in paper, from: U.S. Department of Commerce National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 phone: 800.553.6847 fax: 703.605.6900 email: [email protected] online ordering: www.ntis.gov/ordering.htm Contents 1.0 Introduction .
    [Show full text]
  • Determination of Cloud and Pour Point of Various Petroleum Products
    International Refereed Journal of Engineering and Science (IRJES) ISSN (Online) 2319-183X, (Print) 2319-1821 Volume 6, Issue 9 (September 2017), PP.01-04 Determination of Cloud And Pour Point of Various Petroleum Products Akhil A G1,*,Mohammed Aiman Koya P K1,Akhilesh S1, Muhammad Ashif C A1,Salman Khan2,Dr.Rajesh Kanna3 1Undergraduate Student, Department Of Petroleum Engineering, LORDS Institute Of Engineering & Technology, Hyderabad, India. 2Assistant Professor, Department Of Petroleum Engineering, LORDS Institute Of Engineering & Technology, Hyderabad, India. 3Professor & HOD, Department Of Petroleum Engineering, LORDS Institute Of Engineering & Technology, Hyderabad, India * Corresponding Author Email: Akhil A G Abstract:- This Paper Presents To Know About The Cloud And Pour Point Using ASTM (American Standard Test Method). The Study Was Conducted In The LIET (Lords Institute Of Engineering And Technology) Campus (17.341698, 78.368758) Using Seta Cloud And Pour Point Bath We Study Cloud And Pour Point Of Normal Paraffine, Diesel, Stanadyne And Their Mix. Keywords:- Cold Bath, Stanadyne, Digital Thermometer, Insulating Gaskets --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 08 -08-2017 Date of acceptance: 07-09-2017 -------------------------------------------------------------------------------------------------------------------------------------- I. INTRODUCTION The Cloud And Pour Point Are The Type Of Stage At Which Liquid Come Up To A Change In Their Liquid State When They Are Kept Under A Cold Bath. Here, The Cloud Point Is The Temperature At Which A Liquid Begins To Have Form The Separation Of Wax On Cooling The Particular Liquid, Whereas Pour Point Is The Temperature At Which The Liquid Becomes Semi Solid And Loses Its Flow Properties. Cloud And Pour Point Are Related To Low Temperature Characteristics Of Fuel And Tells The Behavior Of Fuel At Low Temperature.
    [Show full text]
  • Use of Isomerization and Hydroisomerization Reactions to Improve the Cold Flow Properties of Vegetable Oil Based Biodiesel
    Energies 2013, 6, 619-633; doi:10.3390/en6020619 OPEN ACCESS energies ISSN 1996-1073 www.mdpi.com/journal/energies Article Use of Isomerization and Hydroisomerization Reactions to Improve the Cold Flow Properties of Vegetable Oil Based Biodiesel Stephen J. Reaume and Naoko Ellis * Chemical and Biological Engineering, University of British Columbia, 2360 East Mall, Vancouver, BC V6T1Z3, Canada; E-Mail: [email protected] * Author to whom correspondence should be addressed; E-Mail: [email protected]; Tel.: +1-604-822-1243; Fax: +1-604-822-6003. Received: 21 November 2012; in revised form: 4 January 2013 / Accepted: 22 January 2013 / Published: 28 January 2013 Abstract: Biodiesel is a promising alternative to petroleum diesel with the potential to reduce overall net CO2 emissions. However, the high cloud point of biodiesel must be reduced when used in cold climates. We report on the use of isomerization and hydroisomerization reactions to reduce the cloud point of eight different fats and oils. Isomerization was carried out at 260 °C and 1.5 MPa H2 pressure utilizing beta zeolite catalyst, while hydroisomerization was carried out at 300 °C and 4.0 MPa H2 pressure utilizing 0.5 wt % Pt-doped beta zeolite catalyst. Reaction products were tested for cloud point and flow properties, in addition to catalyst reusability and energy requirements. Results showed that high unsaturated fatty acid biodiesels increased in cloud point, due to the hydrogenation side reaction. In contrast, low unsaturated fatty acid biodiesels yielded cloud point reductions and overall improvement in the flow properties. A maximum cloud point reduction of 12.9 C was observed with coconut oil as the starting material.
    [Show full text]