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Understanding Matboard
FRAMING FUNDAMENTALS by Jared Davis, MCPF, GCF Understanding Matboard Being the best frame shop in your area starts with the best products. atboard is a fundamental compo- Mnent of almost every framed pic- ture. However, understanding the vast range of information and choices avail- able in matboards can be daunting. In this article, I aim to provide some useful insights about matboard to help you to dispel some of the myths and decipher some of the facts about this vital aspect of our profession. The two primary purposes for matboard that the introduction of a matboard can in- Different grades of matboard are are to provide protection for the artwork and crease both the size and level of value in the designed for to enhance the framing design. sale of a frame. different appli- cations. Under- 1) Protect. The last consumer survey con- standing which choice to make is ducted by the Professional Picture Fram- How Matboard is Made important to both ers Association found that the num- Matboards are comprised of layers of pa- your customer and your business. ber-one reason why a consumer chose to per of various thickness, laminated together. custom frame an artwork was to protect The papers and core of a matboard are made the item. Preservation, clearly, is of prima- from either unpurified wood pulp, purified al- ry importance to your customer. pha-cellulose wood pulp, or in the case of mu- 2) Enhance. A matboard can help the view- seum-grade board, cotton linter pulp. er to focus correctly on the image. -
Polar Semivolatile Organic Compounds in Biomass-Burning Emissions and Their Chemical Transformations During Aging in an Oxidation flow Reactor
Atmos. Chem. Phys., 20, 8227–8250, 2020 https://doi.org/10.5194/acp-20-8227-2020 © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. Polar semivolatile organic compounds in biomass-burning emissions and their chemical transformations during aging in an oxidation flow reactor Deep Sengupta, Vera Samburova, Chiranjivi Bhattarai, Adam C. Watts, Hans Moosmüller, and Andrey Y. Khlystov Desert Research Institute, 2215 Raggio Parkway, Reno, NV 89512, USA Correspondence: Vera Samburova ([email protected]) Received: 20 December 2019 – Discussion started: 23 January 2020 Revised: 7 May 2020 – Accepted: 18 May 2020 – Published: 16 July 2020 Abstract. Semivolatile organic compounds (SVOCs) emit- 350 g mol−1 decreased after OFR aging, while abundances ted from open biomass burning (BB) can contribute to chem- of low-MW compounds (e.g., hexanoic acid) increased. This ical and physical properties of atmospheric aerosols and indicated a significant extent of fragmentation reactions in also may cause adverse health effects. The polar fraction of the OFR. Methoxyphenols decreased after OFR aging, while SVOCs is a prominent part of BB organic aerosols, and thus a significant increase (3.7 to 8.6 times) in the abundance of it is important to characterize the chemical composition and dicarboxylic acids emission factors (EFs), especially maleic reactivity of this fraction. In this study, globally and region- acid (10 to 60 times), was observed. EFs for fresh and ratios ally important representative fuels (Alaskan peat, Moscow from fresh-to-aged BB samples reported in this study can be peat, Pskov peat, eucalyptus, Malaysian peat, and Malaysian used to perform source apportionment and predict processes agricultural peat) were burned under controlled conditions occurring during atmospheric transport. -
The Miracle Resource Eco-Link
Since 1989 Eco-Link Linking Social, Economic, and Ecological Issues The Miracle Resource Volume 14, Number 1 In the children’s book “The Giving Tree” by Shel Silverstein the main character is shown to beneÞ t in several ways from the generosity of one tree. The tree is a source of recreation, commodities, and solace. In this parable of giving, one is impressed by the wealth that a simple tree has to offer people: shade, food, lumber, comfort. And if we look beyond the wealth of a single tree to the benefits that we derive from entire forests one cannot help but be impressed by the bounty unmatched by any other natural resource in the world. That’s why trees are called the miracle resource. The forest is a factory where trees manufacture wood using energy from the sun, water and nutrients from the soil, and carbon dioxide from the atmosphere. In healthy growing forests, trees produce pure oxygen for us to breathe. Forests also provide clean air and water, wildlife habitat, and recreation opportunities to renew our spirits. Forests, trees, and wood have always been essential to civilization. In ancient Mesopotamia (now Iraq), the value of wood was equal to that of precious gems, stones, and metals. In Mycenaean Greece, wood was used to feed the great bronze furnaces that forged Greek culture. Rome’s monetary system was based on silver which required huge quantities of wood to convert ore into metal. For thousands of years, wood has been used for weapons and ships of war. Nations rose and fell based on their use and misuse of the forest resource. -
Resin Acids in Rosin (Colophony) Solder Flux Fume Laboratory Method Using Gas Chromatography
Health and Safety Executive Resin acids in rosin (colophony) solder flux fume Laboratory method using gas chromatography Scope 1 This method describes the measurement of time-weighted average concentrations of rosin (also known as colophony) based solder flux fume collected onto membrane filters with analysis of the resin acid components, after derivatisation, by gas chromatography (GC). Summary 2 A measured volume of air is drawn through a membrane filter mounted in a sampling head close to the breathing zone. The filter is solvent desorbed, the resin acids derivatised and then quantified using GC with a flame ionisation detector (FID). If confirmation of the resin acid components’ identities is required, samples may also be analysed by GC with a mass spectrometer (MS) detector. However, MS is not recommended for quantitative analysis as, unlike an FID, the MS detector gives different response factors for the various resin acids. The use of alternative methods not included in the MDHS series is acceptable provided they can demonstrate the accuracy and reliability appropriate to the application. Recommended sampling 3 For long-term exposures: Maximum sampling time: 8 hours; Sampling rate: 1–2 l-1min; Sampled volume: up to 960 litres. For short-term exposures: Sampling time: 15 mins; Sampling rate: 2 lmin-1; Sampled volume: 30 litres. Prerequisites 4 Users of this method will need to be familiar with the content of MDHS14.1 Safety 5 Users of this method should be familiar with normal laboratory practice and MDHS83/3 carry out a suitable risk assessment. It is the user’s responsibility to establish appropriate health and safety practices and to ensure compliance with regulatory requirements. -
Mountain Pine Beetle-Attacked Lodgepole Pine for Pulp and Papermaking
Operational extractives management from- mountain pine beetle-attacked lodgepole pine for pulp and papermaking Larry Allen and Vic Uloth Mountain Pine Beetle Working Paper 2007-15 Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre, 506 West Burnside Road, Victoria, BC V8Z 1M5 (250) 363-0600 • cfs.nrcan.gc.ca/regions/pfc Natural Resources Ressources naturelles Canada Canada Canadian Forest Service canadien Service des forêts Operational extractives management from mountain pine beetle-attacked lodgepole pine for pulp and papermaking Larry Allen and Vic Uloth Mountain Pine Beetle Initiative W orking Paper 2007œ15 Paprican 3800 W esbrook Mall Vancouver, B.C. V6S 2L9 Mountain Pine Beetle Initiative PO # 8.43 Natural Resources Canada Canadian Forest Service Pacific Forestry Centre 506 W est Burnside Road Victoria, British Columbia V8Z 1M5 Canada 2007 ≤ Her Majesty the Queen in Right of Canada 2007 Printed in Canada Library and Archives Canada Cataloguing in Publication Allen, Larry Operational extractives m anagem ent from m ountain pine beetle-attached lodgepole pine from pulp and paperm aking / Larry Allen and Vic Uloth. (Mountain Pine Beetle Initiative working paper 2007-15) "Mountain Pine Beetle Initiative, Canadian Forest Service". "MPBI Project # 8.43". "Paprican". Includes bibliographical references: p. Includes abstract in French. ISBN 978-0-662-46480-8 Cat. no.: Fo143-3/2007-15E 1. Pulping--British Colum bia--Quality control. 2. Pulping--Alberta--Quality control. 3. Paper m ills-- Econom ic aspects--British Colum bia. 4. Pulp m ills--Econom ic aspects--Alberta. 5. Lodgepole pine--Diseases and pests–Econom ic aspects. 6. Mountain pine beetle--Econom ic aspects. -
Basics of Kraft Pulping
Lignin Wood is composed of many chemical components, primarily extractives, carbohydrates, and lignin, which are distributed nonuniformly as the result of anatomical structure. Lignin is derived from the Latin term lignum, which means wood.1 Anselme Payen (1838) was the first to recognize the composite nature of wood and referred to a carbon- rich substance as the “encrusting material” which embedded cellulose in the wood. Schulze (1865) later defined this encrusting material as lignin. Lignin has been described as a random, three-dimensional network polymer comprised of variously linked phenylpropane units.2 Lignin is the second most abundant biological material on the planet, exceeded only by cellulose and hemicellulose, and comprises 15-25% of the dry weight of woody plants. This macromolecule plays a vital role in providing mechanical support to bind plant fibers together. Lignin also decreases the permeation of water through the cell walls of the xylem, thereby playing an intricate role in the transport of water and nutrients. Finally, lignin plays an important function in a plant’s natural defense against degradation by impeding penetration of destructive enzymes through the cell wall. Although lignin is necessary to trees, it is undesirable in most chemical papermaking fibers and is removed by pulping and bleaching processes. 1.1.1 Biosynthesis Plant lignins can be broadly divided into three classes: softwood (gymnosperm), hardwood (angiosperm) and grass or annual plant (graminaceous) lignin.3 Three different phenylpropane units, or monolignols, are responsible for lignin biosynthesis.4 Guaiacyl lignin is composed principally of coniferyl alcohol units, while guaiacyl-syringyl lignin contains monomeric units from coniferyl and sinapyl alcohol. -
( 12 ) United States Patent
US009902815B2 (12 ) United States Patent ( 10 ) Patent No. : US 9 ,902 , 815 B2 Tamminen et al. ( 45 ) Date of Patent: Feb . 27 , 2018 ( 54 ) FUNCTIONALIZED LIGNIN AND METHOD ( 58 ) Field of Classification Search OF PRODUCING THE SAME ??? . .. C07G 1 / 00 See application file for complete search history . @(71 ) Applicant : Teknologian tutkimuskeskus VTT , VTT (FI ) ( 56 ) References Cited U . S . PATENT DOCUMENTS @(72 ) Inventors : Tarja Tamminen , Espoo (FI ) ; Jarmo Ropponen , Espoo (FI ) ; Eva - Lena Hult , 2 ,429 , 102 A 10 / 1947 Lewis et al. Espoo ( FI) ; Kristiina Poppius- Levlin , 3 , 149 , 085 A 9 / 1964 Ball et al . Espoo (FI ) 4 ,017 ,430 A * 4 / 1977 Briggs .. .. .. 530 / 502 5 ,773 , 590 A * 6 / 1998 Hart 530 / 500 6 ,172 ,204 B1 * 1 /2001 Sarkanen et al. 530 /500 @(73 ) Assignee : Teknologian tutkimuskeskus VTT Oy, 2010 /0105798 A1 * 4 /2010 Hasegawa . .. .. 522 / 99 Espoo (FI ) 2010 /0152428 A1* 6 / 2010 Gifford et al . .. .. .. 530 / 504 2010 / 0204368 A1 * 8 / 2010 Benko et al. .. .. .. .. .. .. .. 524 / 73 ( * ) Notice : Subject to any disclaimer, the term of this 2010 / 0331531 A1 * 12 / 2010 Mykytka .. .. 530 / 501 patent is extended or adjusted under 35 2011/ 0263836 A1 * 10 / 2011 Vuorenpalo et al. .. .. 530 / 500 U . S . C . 154 ( b ) by 33 days. 2012 /0012035 A1 * 1 / 2012 Blank et al. .. .. 106 / 802 ( 21) Appl. No. : 14 /348 , 904 OTHER PUBLICATIONS (22 ) PCT Filed : Oct. 8 , 2012 Holmbom ( Journal of the American Oil Chemists Society , 1977 , p . 289 - 293 ) . * Stenberg et al . (Surface Coatings International Part B : Coatings ( 86 ) PCT No. : PCT/ FI2012 /050965 Transactions , vol. 88 , B2 , 83 - 156 , 2005 ) . -
The Use of Old Corrugated Board in the Manufacture of High Quality White Papers
Western Michigan University ScholarWorks at WMU Paper Engineering Senior Theses Chemical and Paper Engineering 12-1983 The Use of Old Corrugated Board in the Manufacture of High Quality White Papers Rene H. Kapik Western Michigan University Follow this and additional works at: https://scholarworks.wmich.edu/engineer-senior-theses Part of the Wood Science and Pulp, Paper Technology Commons Recommended Citation Kapik, Rene H., "The Use of Old Corrugated Board in the Manufacture of High Quality White Papers" (1983). Paper Engineering Senior Theses. 209. https://scholarworks.wmich.edu/engineer-senior-theses/209 This Dissertation/Thesis is brought to you for free and open access by the Chemical and Paper Engineering at ScholarWorks at WMU. It has been accepted for inclusion in Paper Engineering Senior Theses by an authorized administrator of ScholarWorks at WMU. For more information, please contact wmu- [email protected]. THE USE OF OLD CORRUGATED BOARD IN THE MANUFACTURE OF HIGH QUALITY WHITE PAPERS by Rene' H. Kapik A Thesis submitted in partial fulfillment of the course requirements for The Bachelor of Science Degree Western Michigan University Kalamazoo, Michigan December, 1983 ABSTRACT Clean corrugated board waste was fractionated into its softwood/ hardwood fiber components, repulped using a kraft pulping process, and bleached using a CEHD bleaching sequence in an effort to produce high brightness fiber suitable for use in medium to high quality white paper. The papers produced had almost equivalent mechanical strengths and opacity, but possessed unsatisfactory brightness and cleanliness when compared to commercially manufactured,:. bleached kraft pulps of identical softwood/hardwood contents. Based on this experimental data, the use of recycled fiber from corrugated board as a fiber substitute in the manufacture of high quality printing and writing papers is not recommended due to its inferior brightness and cleanliness. -
Paper Recycling Technology Detailed Part 1A
Paper Recycling Technology and Science Dr. Richard A. Venditti Paper Science and Engineering Forest Biomaterials Department North Carolina State University Lecture: Paper recycling and technology course introduction and objectives Dr. Richard Venditti Faculty member in the Paper Science and Engineering Program in the Forest Biomaterials Department at North Carolina State University PhD in Chemical Engineering, BS in Pulp and Paper Science and Chemical Engineering Research areas: � Paper recycling � Utilization of forest/agricultural materials for new applications � Life cycle analysis Named a TAPPI Fellow in 2012 Relevant research projects: – The detection of adhesive contaminants – The changes in fibers upon recycling – Automatic sorting of recovered papers – Flotation deinking surfactants – Agglomeration deinking – Screening phenomena and pressure sensitive adhesives – Deposition of adhesive contaminants – Neural networks to control deinking operations – Sludge conversion to bio-ethanol and to bio- materials Course Outline The US Paper Recycling Industry Recovered Paper Grades and Contaminants Effect of Recycling on Fibers/Paper Unit Operations � Pulping, Cleaning, Screening, Washing, Flotation, Dispersion, Bleaching, ….. Image Analysis, Deinking Chemicals System Design Advanced/Additional Topics Course Activities Viewing of the Videos of Lectures � Base lectures by Venditti � Guest lectures from industry leaders Homework assignments Final Exam Critical Issues in Recycling: Going deeper into the recovered paper stream -
United States Patent \ .J Patented Oct
2,907,738 United States Patent \ .j Patented Oct. 3, 1959 1 2 dibasic acids would also give polymerization in which the natural resin acid ester becomes an intimate part ‘ 2,907,738 of the ?nal polymer chemical composition. Such esteri ‘MIXED RESIN ACID ESTERS OF 4,4-BIS(47 ?cation reactions involving the phenolic hydroxyl groups HYDROXYARYL) PENTANOIC ACID 01 would conveniently be carried out by heating with a mix ture of the dibasic acid and acetic anhydride. Sylvan 0. Greenlee, Racine, Wis., assignor to The hydroxyaryl—substituted aliphatic acids contem~ S. C. Johnson & Son, Inc., Racine, Wis. plated for use in preparing the desired resinous poly No Drawing. Application June 30,1955 hydric phenols have two hydroxyphenyl groups attached ‘ Serial No.‘ 519,279’ 10 to a single carbon atom. The preparation of these sub~ stituted acids may be most conveniently carried out by 9 Claims. (Cl. 260-24)‘ condensing a keto-acid with the desired phenol. Expe rience in the preparation of bisphenols and related com pounds indicates that the carbonyl group of the keto This invention relates to new compositions which are 15 acid must be located next to a terminal carbon atom in ‘mixed esters of‘polyhydric alcohols, natural resin,acids, order to obtain satisfactory yields. A terminal carbon and hydroxyaryl-substituted aliphatic acids. atom as used herein refers to primary carbon atoms An object of this invention is to produce new com other ‘than the carboxyl carbon atom of the keto-acid. positions from natural resin acids, polyhydric alcohols Prior applications, Serial Nos. 464,607 and 489,300, and hydroxyaryl-substituted aliphatic acids which are 20 ?led October 25, 1954, and February 18, 1955, respec~ valuable as intermediates in the production of other more tively, disclose a number of illustrative compounds suit complex compositions. -
Determination of Terpenoid Content in Pine by Organic Solvent Extraction and Fast-Gc Analysis
ORIGINAL RESEARCH published: 25 January 2016 doi: 10.3389/fenrg.2016.00002 Determination of Terpenoid Content in Pine by Organic Solvent Extraction and Fast-GC Analysis Anne E. Harman-Ware1* , Robert Sykes1 , Gary F. Peter2 and Mark Davis1 1 National Bioenergy Center, National Renewable Energy Laboratory, Golden, CO, USA, 2 School of Forest Resources and Conservation, University of Florida, Gainesville, FL, USA Terpenoids, naturally occurring compounds derived from isoprene units present in pine oleoresin, are a valuable source of chemicals used in solvents, fragrances, flavors, and have shown potential use as a biofuel. This paper describes a method to extract and analyze the terpenoids present in loblolly pine saplings and pine lighter wood. Various extraction solvents were tested over different times and temperatures. Samples were analyzed by pyrolysis-molecular beam mass spectrometry before and after extractions to monitor the extraction efficiency. The pyrolysis studies indicated that the optimal extraction method used a 1:1 hexane/acetone solvent system at 22°C for 1 h. Extracts from the hexane/acetone experiments were analyzed using a low thermal mass modular accelerated column heater for fast-GC/FID analysis. The most abundant terpenoids from Edited by: the pine samples were quantified, using standard curves, and included the monoter- Subba Rao Chaganti, University of Windsor, Canada penes, α- and β-pinene, camphene, and δ-carene. Sesquiterpenes analyzed included Reviewed by: caryophyllene, humulene, and α-bisabolene. Diterpenoid resin acids were quantified in Yu-Shen Cheng, derivatized extractions, including pimaric, isopimaric, levopimaric, palustric, dehydroabi- National Yunlin University of Science and Technology, Taiwan etic, abietic, and neoabietic acids. -
4-10 Matting and Framing.Pdf
PRESERVATION LEAFLET CONSERVATION PROCEDURES 4.10 Matting and Framing for Works on Paper and Photographs NEDCC Staff NEDCC Andover, MA The importance of proper matting, mounting and framing Do not use any type of foam board such as Fom-cor®, is often overlooked as a key part of collections care and “archival” paper faced foam boards, Gator board, preventative conservation. Poor quality materials and expanded PVC boards such as Sintra® or Komatex®, any improper framing techniques are a common source of lignin containing paper-based mat boards, kraft (brown) damage to artwork and cultural heritage materials that paper, non-archival or self-adhesive tapes (i.e. document are in otherwise good condition. Staying informed about repair tapes), or ATG (adhesive transfer gum), all of which proper framing practices and choosing conservation-grade are used in the majority of frame shops. mounting, matting and framing can prevent many problems that in the future will be much more difficult to MATTING solve or even completely irreversible. As Benjamin Franklin said, “An ounce of prevention is worth a pound of The window mat is the standard mount for works on cure.” paper. The ideal window mat will be aesthetically pleasing while safely protecting the piece from exterior damage. Mats are an excellent storage method for works on paper CHOICE OF A FRAMER and can minimize the damage caused from handling in When choosing a framer it is important to find someone collections that are used for exhibition and study. Some well-informed about best conservation framing practices institutions simplify their framing and storage operations and experienced in implementing them.