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BLUE HEN CHEMIST University of Delaware, Department of Chemistry and Biochemistry Annual Alumni Newsletter Number 41 August 2014 John L
BLUE HEN CHEMIST University of Delaware, Department of Chemistry and Biochemistry Annual Alumni Newsletter NUMBER 41 AUGUST 2014 JOHN L. BURMEISTER, EDITOR ON THE COVER THREE Newly Renovated Organic Laboratories! # 3 8 - P AGE I BLU E H E N C H E MIST ON THE COVER One of the three newly-renovated Organic Chemistry teaching laboratories (QDH 302) is shown. Work on the labs (QDH 112, 318, 320) started on May, 2013 and was completed in February of this year. The refurbishment of the labs was a crucial step in the ongoing revision of the Organic Chemistry laboratory curricula. The additional fume hoods allow each student to conduct experiments individually while minimizing their exposure to chemical reagents. The transparent glass construction helps teaching assistants observe students while they work. The hoods are equipped with inert-gas lines, which can allow the students to work with air-sensitive compounds and learn advanced laboratory techniques. The hoods are also equipped with vacuum lines, which obviate the need for water aspirators and dramatically reduce the labs' water usage. The lab design also allows for instrumentation modules to be swapped in and out according to the needs of the experiment. Carts are designed to house instruments such as gas chromatographs and infrared spectrometers as well as any necessary computer equipment. These carts can then be wheeled into docking areas that have been fitted with the necessary inert gas and electrical lines. The design expands the range of possible instrumentation the students can use while occupying a small footprint of lab space. The labs also feature large flat screen monitors, wireless internet, and computer connectivitiy that will enable the use of multimedia demonstrations and tablet computing. -
FL.Datasheet Kevlar® Distribution Program.Indd
MOVING HIGH PERFORMANCE FIBERS FORWARD KEVLAR® DISTRIBUTION PROGRAM FIBERS PROCESSES PRODUCTS WHY FIBER-LINE® DUPONTFIBER TM OPTICAL DISTRIBUTION CABLES PROGRAM? Key Features FIBER-LINE® values its relationships with both its customers and • Purchase small quantities of Kevlar® suppliers. Over the past several years, FIBER-LINE® and DuPontTM have Para-Aramid formed a strong partnership based upon the synergies between both • Many deniers & types available organizations. • Customize your Kevlar® solution with FIBER-LINE® performance adding processes FIBER-LINE®’s ability to add value to the already attractive properties of both Kevlar® Para-Aramid & Nomex® Meta-Aramid creates more opportunity in the market place to provide solution driven products to a diverse range of markets. Because FIBER-LINE® already processes so many different types and deniers of both Kevlar® & Nomex®, FIBER-LINE® have been authorized by DuPontTM to distribute small quantities of these fibers to an ever- growing customer base. Through this program, we hope to introduce businesses of all sizes to the benefit of aramid fibers. Contact us today for small order quantity orders. Available Deniers 200, 380, 400, 750AP, 800AP, 1000, 1000AP, 1420, 1500, 1500AP, 1500BK(Black), 2160, 2250, 2840, 3000, 7100. MOVING HIGH PERFORMANCE FIBERS FORWARD KEVLAR® PARA-ARAMID (HM) BARE FIBER PERFORMANCE Chemical Chemical Chemical Abrasion Yarn on Yarn Ultraviolet (UV) Flame Resistance Resistance Resistance Resistance Abrasion Resistance Resistance (Acid) (Alkali) (Organic Solvent) P O X P P P P CHEMICAL COMPATIBILITY Chemical Resistance to Acid: Degrades in Formic, Hydrochloric, and Sodium Hydroxide acid. Chemical Resistance to Alkali: Strong alkalis will attack at high temperature or concentration. Chemical Resistance to Organic Solvent: Degrades moderately in Carbon Tetrachloride and Ethylene Glycol/Water. -
Trade Names and Manufacturers
Appendix I Trade names and manufacturers In this appendix, some trade names of various polymeric materials are listed. The list is intended to cover the better known names but it is by no means exhaustive. It should be noted that the names given may or may not be registered. Trade name Polymer Manufacturer Abson ABS polymers B.F. Goodrich Chemical Co. Acrilan Polyacrylonitrile Chemstrand Corp. Acrylite Poly(methyl methacrylate) American Cyanamid Co. Adiprene Polyurethanes E.I. du Pont de Nemours & Co. Afcoryl ABS polymers Pechiney-Saint-Gobain Alathon Polyethylene E.I. du Pont de Nemours & Co. Alkathene Polyethylene Imperial Chemical Industries Ltd. Alloprene Chlorinated natural rubber Imperial Chemical Industries Ltd. Ameripol cis-1 ,4-Polyisoprene B.F. Goodrich Chemical Co. Araldite Epoxy resins Ciba (A.R.L.) Ltd. Arnel Cellulose triacetate Celanese Corp. Arnite Poly(ethylene terephthalate) Algemene Kunstzijde Unie N.Y. Baypren Polychloroprene Farbenfabriken Bayer AG Beetle Urea-formaldehyde resins British Industrial Plastics Ltd. Ben vic Poly(vinyl chloride) Solvay & Cie S.A. Bexphane Polypropylene Bakelite Xylonite Ltd. Butacite Poly( vinyl butyral) E.I. du Pont de Nemours & Co. Butakon Butadiene copolymers Imperial Chemical Industries Ltd. Butaprene Styrene-butadiene copolymers Firestone Tire and Rubber Co. Butvar Poly(vinyl butyral) Shawinigan Resins Corp. Cap ran Nylon 6 Allied Chemical Corp. Carbowax Poly(ethylene oxide) Union Carbide Corp. Cariflex I cis-1 ,4-Polyisoprene Shell Chemical Co. Ltd. Carina Poly(vinyl chloride) Shell Chemical Co. Ltd. TRADE NAMES AND MANUFACTURERS 457 Trade name Polymer Manufacturer Carin ex Polystyrene Shell Chemical Co. Ltd. Celcon Formaldehyde copolymer Celanese Plastics Co. Cellosize Hydroxyethylcellulose Union Carbide Corp. -
Chemical Representation Biovia Databases 9.5
CHEMICAL REPRESENTATION BIOVIA DATABASES 9.5 Copyright Notice ©2015 Dassault Systèmes. All rights reserved. 3DEXPERIENCE, the Compass icon and the 3DS logo, CATIA, SOLIDWORKS, ENOVIA, DELMIA, SIMULIA, GEOVIA, EXALEAD, 3D VIA, BIOVIA and NETVIBES are commercial trademarks or registered trademarks of Dassault Systèmes or its subsidiaries in the U.S. and/or other countries. All other trademarks are owned by their respective owners. Use of any Dassault Systèmes or its subsidiaries trademarks is subject to their express written approval. Acknowledgments and References To print photographs or files of computational results (figures and/or data) obtained using BIOVIA software, acknowledge the source in an appropriate format. BIOVIA may grant permission to republish or reprint its copyrighted materials. Requests should be submitted to BIOVIA Support, either through electronic mail to [email protected], or in writing to: BIOVIA Support 5005 Wateridge Vista Drive, San Diego, CA 92121 USA No-Structures 28 Contents Chapter 2: Reaction Representation 29 Introduction 29 Overview 1 Reaction Mapping 29 Audience for this Guide 1 Mapping Reactions Automatically 30 Prerequisite knowledge 1 Mapping Reactions Manually 31 Related BIOVIA Documentation 1 Stereoconfiguration Atom Properties in Chapter 1: Molecule Representation 3 Mapped Reactions 32 Substances, structures and fragments 3 Properties of Bonds in Mapped Reactions 32 The BIOVIA Periodic Table 3 Simple Bond Properties 32 Atom Properties 3 Combined Bond Properties 33 Charges, Radicals and Isotopes -
Polymer Dynamics
Polymer Dynamics 2017 School on Soft Matters and Biophysics Instructor: Alexei P. Sokolov, e-mail: [email protected] Text: Instructor's notes with supplemental reading from current texts and journal articles. Please, have the notes printed out before each lecture. Books (optional): M.Doi, S.F.Edwards, “The Theory of Polymer Dynamics”. Y.Grosberg, A.Khokhlov, “Statistical Physics of Macromolecules”. J.Higgins, H.Benoit, “Polymers and Neutron Scattering”. 1 Course Content: I. Introduction II. Experimental methods for analysis of molecular motions III. Vibrations IV. Fast and Secondary Relaxations V. Segmental Dynamics and Glass Transition VI. Chain Dynamics and Viscoelastic Properties VII. Rubber Elasticity VIII. Concluding Remarks 2 INTRODUCTION Polymers are actively used in many technologies Traditional technologies: Even better perspectives for use in novel technologies: Example: Light-weight materials Boeing-787 “Dreamliner” 80% by volume is plastic Materials for energy generation Example: polymer solar cells Materials for energy storage Example: Polymer-based Li battery Polymers have huge potential for applications in Bio-medical field “Smart” materials, stimuli-responsive, self-healing … 3 Polymers Polymers are long molecules They are constructed by covalently bonded structural units – monomers Main difference between properties of small molecules and polymers is related to the chain connectivity Advantages of Polymeric Based Materials: Easy processing, relatively cheap manufacturing Light weight (contain mostly light elements like C, H, O) Unique viscoelastic properties (e.g. rubber elasticity) Extremely broad tunability of macroscopic properties 4 Definitions o Monomer – repeat unit, structural block of the polymer chain o Oligomer – short chains, ~ 3-10 monomers o Polymers – long chains, usually hundreds of monomers o Degree of polymerization – number of monomers in the polymer chain Molecular weight: Weight of the molecule M [g/mol]. -
Pd Nanoparticles-Loaded Vinyl Polymer Gels: Preparation, Structure and Catalysis
catalysts Article Pd Nanoparticles-Loaded Vinyl Polymer Gels: Preparation, Structure and Catalysis Elsayed Elbayoumy 1,2 , Yuting Wang 1, Jamil Rahman 1,3, Claudio Trombini 3, Masayoshi Bando 1, Zhiyi Song 1, Mostafa A. Diab 2, Farid S. Mohamed 2, Naofumi Naga 4 and Tamaki Nakano 1,5,* 1 Institute for Catalysis and Graduate School of Chemical Sciences and Engineering, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan; [email protected] (E.E.); [email protected] (Y.W.); [email protected] (J.R.); [email protected] (M.B.); [email protected] (Z.S.) 2 Department of Chemistry, Faculty of Science, Damietta University, New Damietta 34517, Egypt; [email protected] (M.A.D.); [email protected] (F.S.M.) 3 Dipartimento di Chimica “G. Ciamician”, Università degli Studi di Bologna, via Selmi 2, 40126 Bologna, Italy; [email protected] 4 Department of Applied Chemistry, Shibaura Institute of Technology, College of Engineering, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan; [email protected] 5 Integrated Research Consortium on Chemical Sciences (IRCCS), Institute for Catalysis, Hokkaido University, N21 W10, Kita-ku, Sapporo 001-0021, Japan * Correspondence: [email protected]; Tel.: +81-11-706-9155 Abstract: Four vinyl polymer gels (VPGs) were synthesized by free radical polymerization of divinyl- benzene, ethane-1,2-diyl dimethacrylate, and copolymerization of divinylbenzene with styrene, and ethane-1,2-diyl dimethacrylate with methyl methacrylate, as supports for palladium nanoparticles. VPGs obtained from divinylbenzene and from divinylbenzene with styrene had spherical shapes while those obtained from ethane-1,2-diyl dimethacrylate and from ethane-1,2-diyl dimethacry- late with methyl methacrylate did not have any specific shapes. -
Polymer Exemption Guidance Manual POLYMER EXEMPTION GUIDANCE MANUAL
United States Office of Pollution EPA 744-B-97-001 Environmental Protection Prevention and Toxics June 1997 Agency (7406) Polymer Exemption Guidance Manual POLYMER EXEMPTION GUIDANCE MANUAL 5/22/97 A technical manual to accompany, but not supersede the "Premanufacture Notification Exemptions; Revisions of Exemptions for Polymers; Final Rule" found at 40 CFR Part 723, (60) FR 16316-16336, published Wednesday, March 29, 1995 Environmental Protection Agency Office of Pollution Prevention and Toxics 401 M St., SW., Washington, DC 20460-0001 Copies of this document are available through the TSCA Assistance Information Service at (202) 554-1404 or by faxing requests to (202) 554-5603. TABLE OF CONTENTS LIST OF EQUATIONS............................ ii LIST OF FIGURES............................. ii LIST OF TABLES ............................. ii 1. INTRODUCTION ............................ 1 2. HISTORY............................... 2 3. DEFINITIONS............................. 3 4. ELIGIBILITY REQUIREMENTS ...................... 4 4.1. MEETING THE DEFINITION OF A POLYMER AT 40 CFR §723.250(b)... 5 4.2. SUBSTANCES EXCLUDED FROM THE EXEMPTION AT 40 CFR §723.250(d) . 7 4.2.1. EXCLUSIONS FOR CATIONIC AND POTENTIALLY CATIONIC POLYMERS ....................... 8 4.2.1.1. CATIONIC POLYMERS NOT EXCLUDED FROM EXEMPTION 8 4.2.2. EXCLUSIONS FOR ELEMENTAL CRITERIA........... 9 4.2.3. EXCLUSIONS FOR DEGRADABLE OR UNSTABLE POLYMERS .... 9 4.2.4. EXCLUSIONS BY REACTANTS................ 9 4.2.5. EXCLUSIONS FOR WATER-ABSORBING POLYMERS........ 10 4.3. CATEGORIES WHICH ARE NO LONGER EXCLUDED FROM EXEMPTION .... 10 4.4. MEETING EXEMPTION CRITERIA AT 40 CFR §723.250(e) ....... 10 4.4.1. THE (e)(1) EXEMPTION CRITERIA............. 10 4.4.1.1. LOW-CONCERN FUNCTIONAL GROUPS AND THE (e)(1) EXEMPTION................. -
Exploring the Influence of Entropy on Dynamic Macromolecular Ligation
Exploring the Influence of Entropy on Dynamic Macromolecular Ligation Zur Erlangung des akademischen Grades eines DOKTORS DER NATURWISSENSCHAFTEN (Dr. rer. nat.) der KIT-Fakultät für Chemie und Biowissenschaften des Karlsruher Instituts für Technologie (KIT) genehmigte DISSERTATION von Dipl.-Chem. Kai Pahnke aus Nagold, Deutschland KIT-Dekan: Prof. Dr. Willem M. Klopper Referent: Prof. Dr. Christopher Barner-Kowollik Korreferent: Prof. Dr. Manfred Wilhelm Tag der mündlichen Prüfung: 22.07.2016 Die vorliegende Arbeite wurde im Zeitraum von Februar 2013 bis Juni 2016 im Rahmen einer Kollaboration zwischen dem KIT und der Evonik Industries AG unter der Betreuung von Prof. Dr. Christopher Barner-Kowollik durchgeführt Only entropy comes easy. Anton Chekhov ABSTRACT The present thesis reports a novel, expedient linker species as well as previously unforeseen effects of physical molecular parameters on reaction entropy and thus equilibria with extensive implications on diverse fields of research via the study of dynamic ligation chemistries, especially in the realm of macromolecular chemistry. A set of experiments investigating the influence of different physical molecular parameters on reaction or association equilibria is designed. Initially, previous findings of a mass dependant effect on the reaction entropy – resulting in a more pronounced debonding of heavier or longer species – are reproduced and expanded to other dynamic ligation techniques as well as further characterization methods, now including a rapid and catalyst- free Diels–Alder reaction. The effects are evidenced via high temperature nuclear magnetic resonance spectroscopy (HT NMR) as well as temperature dependent size exclusion chromatography (TD SEC) and verified via quantum chemical ab initio calculations. Next, the impact of chain mobility on entropic reaction parameters and thus the overall bonding behavior is explored via the thermoreversible ligation of chains of similar mass and length, comprising isomeric butyl side-chain substituents with differing steric demands. -
Chain-Growth Polymerization, Version of 1/5/05
Chapter Three, Chain-growth polymerization, Version of 1/5/05 3 Chain-growth polymerization 3.1 Introduction We indicated in Chapter 1 that the category of addition polymers is best characterized by the mechanism of the polymerization reaction, rather than by the addition reaction itself. This is known to be a chain mechanism, so in the case of addition polymers we have chain reactions producing chain molecules. One thing to bear in mind is the two uses of the word chain in this discussion. The word chain continues to offer the best description of large polymer molecules. A chain reaction, on the other hand, describes a whole series of successive events triggered by some initial occurrence. We sometimes encounter this description of highway accidents in which one traffic mishap on a fogbound highway results in a pileup of colliding vehicles that can extend for miles. In nuclear reactors a cascade of fission reactions occurs which is initiated by the capture of the first neutron. In both of these examples some initiating event is required. This is also true in chain-growth polymerization. In the above examples the size of the chain can be measured by considering the number of automobile collisions that result from the first accident, or the number of fission reactions which follow from the first neutron capture. When we think about the number of monomers that react as a result of a single initiation step, we are led directly to the degree of polymerization of the resulting molecule. In this way the chain mechanism and the properties of the polymer chains are directly related. -
Title Dimethyl Carbonate As Potential Reactant in Non-Catalytic
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Kyoto University Research Information Repository Dimethyl carbonate as potential reactant in non-catalytic Title biodiesel production by supercritical method Author(s) Ilham, Zul; Saka, Shiro Citation Bioresource Technology (2009), 100(5): 1793-1796 Issue Date 2009-03 URL http://hdl.handle.net/2433/87775 Right c 2009 Elsevier Ltd All rights reserved. Type Journal Article Textversion author Kyoto University Dimethyl Carbonate as Potential Reactant in Non-Catalytic Biodiesel Production by Supercritical Method Zul Ilham and Shiro Saka* Department of Socio-Environmental Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan *Corresponding author: Shiro Saka Department of Socio-Environmental Energy Science, Graduate School of Energy Science, Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto 606-8501, Japan Tel : +81-75-753-4738 Fax: +81-75-753-4738 E-mail address: [email protected] 1 Abstract In this study, the non-catalytic supercritical method has been studied in utilizing dimethyl carbonate. It was demonstrated that, the supercritical dimethyl carbonate process without any catalysts applied, converted triglycerides to fatty acid methyl esters with glycerol carbonate and citramalic acid as by-products, while free fatty acids were converted to fatty acid methyl esters with glyoxal. After 12 min of reaction at 350 °C/20 MPa, rapeseed oil treated with supercritical dimethyl carbonate reached 94% (w/w) yield of fatty acid methyl ester. The by-products from this process which are glycerol carbonate and citramalic acid are much higher in value than glycerol produced by the conventional process. -
Ep 2937372 A1
(19) TZZ ¥¥ _T (11) EP 2 937 372 A1 (12) EUROPEAN PATENT APPLICATION (43) Date of publication: (51) Int Cl.: 28.10.2015 Bulletin 2015/44 C08G 64/30 (2006.01) (21) Application number: 14382152.8 (22) Date of filing: 25.04.2014 (84) Designated Contracting States: • Bojarski, Aaron David AL AT BE BG CH CY CZ DE DK EE ES FI FR GB 30390 La Aljorra, Cartagena (AR) GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO • Vic Fernández, Ignacio PL PT RO RS SE SI SK SM TR 30390 La Aljorra, Cartagena (ES) Designated Extension States: BA ME (74) Representative: Modiano, Micaela Nadia Modiano & Partners (DE) (71) Applicant: SABIC Global Technologies B.V. Thierschstrasse 11 4612 PX Bergen op Zoom (NL) 80538 München (DE) (72) Inventors: • Garcia Agudo, Jorge A 30390 La Aljorra, Cartagena (ES) (54) AMETHOD OF MELT POLYMERIZING POLYCARBONATE AND POLYCARBONATES DERIVED THEREFROM (57) In an embodiment, a melt polymerization proc- sition comprises an alpha catalyst and a beta catalyst ess can comprise: melt polymerizing a dihydroxy com- comprising TPPP, wherein the polymerized polycar- pound and a carbonate compound in a polymerization bonate has a branching level of less than or equal to 900 unit in the presence of a catalyst composition to form ppm. polymerized polycarbonate, wherein the catalyst compo- EP 2 937 372 A1 Printed by Jouve, 75001 PARIS (FR) EP 2 937 372 A1 Description TECHNICAL FIELD 5 [0001] This application relates to catalysts in a melt polymerization and to processes of using the same, and especially relates to a melt polymerization process using a catalyst comprising tetraphenyl phosphonium phenolate. -
Process for Simultaneous Production of Ethylene Glycol and Carbonate Ester
Europäisches Patentamt *EP001125915B1* (19) European Patent Office Office européen des brevets (11) EP 1 125 915 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int Cl.7: C07C 68/06, C07C 29/128, of the grant of the patent: C07C 31/20 25.05.2005 Bulletin 2005/21 (21) Application number: 01100972.7 (22) Date of filing: 17.01.2001 (54) Process for simultaneous production of ethylene glycol and carbonate ester Verfahren zur gleichzeitigen Herstellung von Ethylenglykol und Carbonatester Procédé pour la production simultanée d’éthylèneglycol et d’ester carbonate (84) Designated Contracting States: (74) Representative: DE ter Meer, Nicolaus, Dipl.-Chem., Dr. TER MEER STEINMEISTER & PARTNER GbR, (30) Priority: 19.01.2000 JP 2000009865 Patentanwälte, Mauerkircherstrasse 45 (43) Date of publication of application: 81679 München (DE) 22.08.2001 Bulletin 2001/34 (56) References cited: (73) Proprietor: Mitsubishi Chemical Corporation WO-A-99/64382 US-A- 5 214 182 Tokyo 108-0014 (JP) US-A- 5 847 189 (72) Inventor: Kawabe, Kazuki, Mitsubishi Chemical Corporation Yokkaichi-shi, Mie (JP) Note: Within nine months from the publication of the mention of the grant of the European patent, any person may give notice to the European Patent Office of opposition to the European patent granted. Notice of opposition shall be filed in a written reasoned statement. It shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). EP 1 125 915 B1 Printed by Jouve, 75001 PARIS (FR) EP 1 125 915 B1 Description [0001] The present invention relates to an efficient process for simultaneously producing ethylene glycol and a car- bonate ester as industrial materials, especially ethylene glycol important as a raw material for polyester resin and a 5 carbonate ester such as dimethyl carbonate useful as a raw material for polycarbonate resin.