21. Polymers | An Open Access Journal From MDPI polymers, an international, peerreviewed Open Access journal. polymers - Open Access Journal polymers (ISSN 2073-4360), an open access journal of polymer science, is published by http://www.mdpi.com/journal/polymers/

Login Register mdpi.com Journals A-Z ... Open Access Policy Title / Keyword Journal all Administrative Sciences Algorithms Animals Atmosphere Biomolecules Biosensors Brain Sciences Cancers Challenges Coatings Diversity Energies Entropy Forests Future Internet Games Genes IJERPH IJMS Information Insects JFB JLPEA Marine Drugs Materials Membranes Micromachines Minerals Molbank Molecules Nutrients Pharmaceuticals Pharmaceutics Polymers Religions Remote Sensing Sensors Sustainability Symmetry Toxins Viruses Water Volume Author Section Issue Article Type all Addendum Article Book Review Books Received Case Report Commentary Communication Correction Discussion Editorial Letter Opinion Review Short Note Technical Note Special Issue all Advanced Polymer Architectures Biofunctional Polymers for Medical Applications Bioinspired Polymers Click Chemistry in Polymer Science Click Chemistry in Polymer Science Conductive Polymers Liquid Crystalline Polymers Nano-Structures of Block Copolymers Natural Polymers New Polymer Synthesis Reactions Novel Stimuli-Responsive (co)Polymers Polyelectrolytes Polymer Dynamics in Solution Polymer Thin Films and Membranes Polymers for Optical Applications Polymers for Oro-Dental and Cranio- Maxillo-Facial Applications Single Molecular Wire Page Polymers Polymers Home Instructions for Authors Publication Fees ... Editorial Board E-Mail Alert Add your e-mail address to receive forthcoming issues of this journal: Journal Browser Forthcoming Issue Current Issue Vol. 2 (2010)

22. What Are Polymers? SO WHAT ARE polymers? Tiny molecules strung in long repeating chains form polymers. Why should you care? Well for one thing, your body is made of them. http://www.nationalgeographic.com/resources/ngo/education/plastics/describe.html

SO WHAT ARE POLYMERS? Main In Nature At Home Recycling ... Geography Education

23. UV Damage To Polymers UV Damage to polymers The chemical pathways by which common polymers photodegrade are fairly well known, but various aspects of the mechanisms involved remain unelucidated. http://www.gcrio.org/UNEP1998/UNEP98p62.html

New Library About Online Catalog ... Links UV Damage to Polymers Yellowing Discoloration. Both natural biopolymer materials and synthetic polymers undergo UV induced discoloration, usually an increase in the yellowness on exposure. Lignocellulosic materials such as wood and paper readily undergo light-induced yellowing (Hon et al., 1991). While both cellulose and lignin constituents of wood can photoyellow, it is the latter that is mostly responsible for the phenomenon. Lignin, which comprises 29-33% by weight of softwood, contains numerous chromophores that efficiently absorb UV radiation (Heitner, 1993). As much as 80-95% of the absorption coefficient of wood can be ascribed to the lignin fraction The photodamage to wool has serious economic implications in large producer countries. Exposure of wool keratins to sunlight is well known to cause yellowing, bleaching, and main-chain scission of the proteins (Lennox et al., 1971) Launer (Launer, 1965) established that visible radiation in sunlight causes photobleaching of wool while the UV wavelength causes photoyellowing. Based on Lennoxdata (Lennox et al., 1971), the most effective yellowing wavelengths were in the UV-A region (340 -420 nm). As ozone layer depletion results in an increase in both UV B as well as UV A content of sunlight, wool appears to be a material that might be particularly affected. Preliminary data on the photostability of Chitosan, another commonly found biopolymer, were recently reported (Andrady et al., 1996). While not used commercially in high volume, the biopolymer occurs widely in nature in fungal cell walls, crustacean exoskelton and in insect tissue. Ultraviolet radiation in the wavelength range 250 nm to about 340 nm was reported to cause changes in the average molecular weight as determined by solution viscosity as well as the absorbance (at 310 nm) in chitosan derived from crab shells. The damaging role of UV-B in creating free+radicals in human hair has also been reported (Jahan et al., 1987) but no quantitative spectral sensitivity data are available.

24. Polymers - Macromolecular Chains - Chains Of Monomers An explanation for what polymers are and their monomer composition. A definition including descriptions of different types of natural (carbohydrate, protein) and synthetic http://biotech.about.com/od/glossary/g/polymer.htm

zWASL=1;zGRH=1 zGCID=this.zGCID?zGCID+" test11":" test11" zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') zDO=0 Home Biotech / Biomedical Biotech / Biomedical Search Biotech / Biomedical Lab Techniques Get Involved New Technologies ... Share w(x2+zWl+'?p=1" zT="18/1[N" rel="nofollow">Print') Free Biotech / Biomedical Newsletter! Sign Up Discuss in my Forum Polymers By Theresa Phillips , About.com Guide See More About: protein structure covalent bonds smart polymers synthetic polymers ... bioplastics zSB(3,3) Definition: The term polymer comes from greek words meaning "many parts". A polymer is a substance with a high molecular mass that is composed of a large number of repeating units. These units, called monomers, are connected by covalent chemical bonds. Some polymers are composed of a single type of monomer, while others may consist of two, three or more different monomers. Many biological macromolecules are examples of natural polymers. These include the carbohydrates, starch, cellulose and glycogen (branched chains of glucose monomers), and chitin (chains of N-acetyl-glucosamine). Examples of polymers consisting of mixtures of monomers are the nucleic acids, DNA and RNA, made from units of 4 different nucleotides, and proteins , which consist of a mixture of the 20 standard amino acids. Natural rubber, or latex, is a natural hydrocarbon polymer found in the sap of some plants. Natural, biological polymers have both structural roles and physiological functions, and are involved in the control of cellular operations such as growth, replication and metabolism.

25. NatureWorks LLC Home Page Manufacturers of polymers that are derived from renewable materials for packaging and servicewear. http://www.natureworksllc.com/

26. Polymers | Define Polymers At Dictionary.com 窶渡oun Chemistry . 1. a compound of high molecular weight derived either by the addition of many smaller molecules, as polyethylene, or by the condensation of many smaller http://dictionary.reference.com/browse/polymers?r=14

27. NOVA Chemicals Multinational company producing polyethylene, styrenic polymers, monomers, and a variety of coproducts. http://www.novachem.com

28. What Is A Polymer? This is PAUL LEMUR. He's a lemur named Paul. polymers are made up of many many molecules all strung together to form really long chains (and sometimes more complicated http://www.pslc.ws/macrog/kidsmac/basics.htm

29. Polymers Last time we examined the characteristic reactions of alkenes additions. Today, we'll see how reactions like these and some familiar reactions of carboxylic acid derivatives http://chemistry2.csudh.edu/rpendarvis/Polymer.html

Chemistry 240 Spring 2001 Polymers - Very Long Chains Polymers - Structure and Response to Heat Repeating Units and Monomers Step-Growth Polymers Chain-Growth Polymers ... Last time we examined the characteristic reactions of alkenes additions. Today, we'll see how reactions like these and some familiar reactions of carboxylic acid derivatives can be used to make very long chains polymers. We have already looked at some important polymers from biological systems; starch, cellulose, proteins , and nucleic acids Let's begin by noticing some important real-world characteristics of polymers. While they all contain molecules with very long chains, there are some important differences between the properties of different types of polymers. Most polymers are formed into the desired shapes after softening or melting by heating. Some, like the familiar polyethylene and polystyrene, may be melted and reshaped again and again. These are called thermoplastic polymers. Others char or burn when reheated. These are called thermosetting polymers. Examples include Bakelite and vulcanized rubber. The structural difference between these polymers is that the thermosetting polymers have crosslinks between the chains and the thermoplastic polymers do not. When a thermoplastic polymer is heated the chains are free to move past each other making the sample less rigid and eventually melting it. This cannot happen with a thermosetting polymer, since its chains are locked together by the cross links. The energy from the heat must eventually go into breaking bonds which leads to decomposition of the polymer.

30. POLYMERS s, chemical structures, characteristics and......Review of natural and synthetic polymers currently in use in the plastics, composite and manmade fiber industries. http://www.chymist.com/Polymers.pdf

31. Polymer Basics Polymer Basics Let's start at the beginning. If you don't know what a polymer even is, you're in the right place. Click on a link to learn about polymers what they're made http://www.pslc.ws/macrog/kidsmac/wiap.htm

32. Polymers On Myspace Music - Free Streaming MP3s, Pictures & Music Downloads Myspace profile for polymers. Find friends, share photos, keep in touch with classmates, and meet new people on Myspace. http://www.myspace.com/polymersuk

33. 日本触媒 Manufactures specialty polymers and chemicals. Biodegradable polymers, thermoplastic polyesters, epoxy curing agents and synthetic lubricants. Japan. http://www.shokubai.co.jp/

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34. Polymers Plastics that are Recycled Recycle Code Abbreviation and Chemical Name of Plastic Types of Uses and Examples 1 PET polyethylene terephthalate http://www.elmhurst.edu/~chm/vchembook/400polymers.html

Polymers Elmhurst College Addition Polymers Rubber ... Virtual ChemBook Plastics that are Recycled Recycle Code Abbreviation and Chemical Name of Plastic Types of Uses and Examples PET - polyethylene terephthalate Clear, 2 liter beverage bottles HDPE - High density polyethylene Milk jugs, detergent bottles, some water bottles PVC - Polyvinyl chloride Saran wrap, plastic drain pipe, shower curtains, some water bottles LDPE - Low density polyethylene Plastic bags, garment bags, coffee can lids PP - Polypropylene Aerosol can tops, rigid bottle caps, candy wrappers, bottoms of bottles PS - Polystyrene Hard clear plastic cups, foam cups, eating utensils, deli food containers, some packing popcorn Other Biodegradable, Some packing popcorn Polymers Introduction: Polymers are long chain giant organic molecules are assembled from many smaller molecules called monomers Polymers consist of many repeating monomer units in long chains. A polymer is analogous to a necklace made from many small beads (monomers).

35. Polymers Information | Business.com Manufacturers and suppliers of polymer process equipment, monomers, specialized resins, as well as additives and basic products. http://www.business.com/directory/chemicals/polymers/

36. Albemarle Corporation Manufacturer of polymers and fine chemicals, including additives and intermediates used in agricultural and cleaning products, drilling compounds, pharmaceuticals such as ibuprofen-based drugs, photographic chemicals, plastics, and polymers. (NYSE ALB) http://www.albemarle.com/

37. Nsf.gov - Funding - Polymers - US National Science Foundation (NSF) PROGRAM GUIDELINES. Apply to PD 031773 as follows For full proposals submitted via FastLane standard Grant Proposal Guidelines apply. For full proposals submitted via Grants.gov NSF http://www.nsf.gov/funding/pgm_summ.jsp?pims_id=5357

38. Centre For Material And Fibre Innovation Introduction. polymers have significant impact on our world today. Applications for polymers extend from adhesives, coatings, painting, foams and packaging materials to http://www.deakin.edu.au/itri/cmfi/research/areas/polymers.php

Skip to content Deakin home Contact Deakin Directory of staff ... Help Search Domain to search All Deakin web Policies and governance Research publications Centre for Material and Fibre Innovation ITRI CMFI home About us Research Facilities ... ITRI Research Areas Biomaterials Fibres and polymers Porous metals Composites ... Nanocomposites Polymers Other research links Partnerships Current projects Future projects and scholarships Polymers Group leader: Professor Qipeng Guo Group members Introduction Polymers have significant impact on our world today. Applications for polymers extend from adhesives, coatings, painting, foams and packaging materials to structural materials, composites, textile fibres, electronic and optical devices, biomedical materials, and use in many newly developed high-tech industries. The polymer research at Deakin University is aimed at developing new polymeric materials to meet various requirements in different applications, involving a broad range of polymeric materials such as thermosets, thermoplastics, polymer blends, block copolymers, polymer composites, biodegradable polymers, polymeric biomaterials, nanostructured polymers and conducting polymers. Advanced Thermosets Polymer Blends and Thermoplastics Block Copolymers and Nanostructured Polymers Block copolymer self-assembly, in situ polymerization and reactive polymer systems are employed to develop novel polymeric nanomaterials for a variety of applications. The research of polymeric nanomaterials includes developing various nanostructured thermoplastics, nanostructured thermosets, nanocomposites, polymer nanofoams, and nanoporous polymers. It also deals with new phenomena associated with nanoscale structure formation and various physical properties under nanoconfined environments, including nanoscale confinement effect on crystallization in polymeric nanomaterials such as nanostructured blends.

39. Innovative Polymers, Inc. Offering a range of industrial polyurethane, IPI s polyurethane systems, and silicone mold-making compound. http://www.innovative-polymers.com/

SEARCH BY PROPERTY... HIGH ELONGATION POLYURETHANES HIGH FLEXURAL MODULUS POLYURETHANES HIGH HEAT DEFLECTION TEMPERATURE POLYURETHANES HIGH IMPACT STRENGTH POLYURETHANES HIGH TENSILE STRENGTH POLYURETHANES HIGH TEAR STRENGTH POLYURETHANES GOOD DIELECTRIC PROPERTY POLYURETHANES AND RTV SILICONES FLAME RETARDANT POLYURETHANES WATER CLEAR POLYURETHANES Home About Us News / Case Histories / Photos Applications ... Contact Us NEWS Rock Candy Polyurethane Climbing Holds Popular Product Lines Expanded NEW Shore A, UL 94 V-O Polyurethanes NEW Family of Super Tough, Shore A Hardness Polyurethanes ... Fast-setting Water Clear and Flame Retardant Polyurethanes Innovative Polymers, Inc. manufactures advanced mercury-free, RoHS-compliant polyurethanes for casting models, prototypes and short-run parts. Among our primary product families are: High-performance ABS- and TPO-like systems Water-clear materials Flame-retardant systems Foams Tooling materials Our polyurethanes exhibit a broad range of handling, curing and performance properties to meet the needs of virtually any application.ﾂ� Innovative Polymers chemists also have the expertise to formulate custom systems and color-matched materials.ﾂ� In addition, our dedicated technical support team is on-call to help customers solve their toughest casting challenges. Fast response to customer needs is a priority.ﾂ� We maintain a flexible production schedule that accommodates shipping of most orders on a same-day or next-day basis.

40. Puma Polymers Puma polymers LLC Receives 2009 Best of Business Award 8/10/2010. The Small Business Commerce Association (SBCA) is pleased to announce that Puma polymers LLC has been selected http://pumapolymers.com/

Home Applications Products MSDSs ... Puma Polymers LLC Receives 2009 Best of Business Award The Small Business Commerce Association (SBCA) is pleased to announce that Puma Polymers LLC has been selected for the 2009 Best of Business Award in the Polyurethane resins category > Read More 2011 World of Concrete Show - PUMA Polymers to Exhibit Las Vegas, Nevada - PUMA Polymers is displaying at the 2011 World of Concrete Show > Read More PUMA Polymers to Display Por-A-Mold at 2011 NPCA Annual Show Charlotte, NC NPCA Precast Show > Read More MASTER WORKS The Machine: The Contractor Masterworks Video - The Machine > Read More Search for a Product by Name: PUMA Polymers is highly recognized for its ability to develop and deliver chemically advanced, high performance, next-generation products and solutions to the polyurethane systems and prepolymer markets worldwide. We are dedicated to the advancement of our customers and will meet and exceed all expectations by providing the highest quality of service. Please contact one of our experienced sales managers to discuss solving your needs.

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