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Topic: Polymer


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In the News (Thu 20 Jun 19)

  
  Polymer banknote - Wikipedia, the free encyclopedia
Polymer banknotes were developed by the Reserve Bank of Australia (RBA) and the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and were first issued as currency in Australia in 1988.
The complexities of counterfeiting polymer banknotes are proposed to act as a deterrent to counterfeiters.
Although the 5 pound Northern Bank polymer banknote was a one-off commemorative issued, unconventionally, in portrait orientation to mark the year 2000, it was in general circulation.
en.wikipedia.org /wiki/Polymer_banknotes   (1108 words)

  
 AllRefer.com - polymer (Chemistry) - Encyclopedia
An addition polymer is one in which the molecular formula of the repeating structural unit is identical to that of the monomer, e.g., polyethylene and polystyrene.
A condensation polymer is one in which the repeating structural unit contains fewer atoms than that of the monomer or monomers because of the splitting off of water or some other substance, e.g., polyesters and polycarbonates.
Polymerization, the chemical process of forming polymers from their component monomers, is often a complex process that may be initiated or sustained by heat, pressure, or the presence of one or more catalysts.
reference.allrefer.com /encyclopedia/P/polymer.html   (426 words)

  
 PlasticsResource.org - The Basics - Polymer Definition & Properties
The polymer chains in objects that are translucent and opaque are in a crystalline arrangement.
Thermal resistance is evident in the kitchen with pot and pan handles made of polymers, the coffee pot handles, the foam core of refrigerators and freezers, insulated cups, coolers and microwave cookware.
Polymers have many inherent properties that can be further enhanced by a wide range of additives to broaden their uses and applications.
www.plasticsresource.com /s_plasticsresource/sec.asp?TRACKID=&CID=124&DID=226   (1303 words)

  
 Polymers   (Site not responding. Last check: 2007-10-22)
This is intended to be an overview of the areas of application of polymers as biomaterials and the characteristics of polymers that need to be considered in the application to a physiological setting, most notably the human body.
The Journal of Biomedical Materials Research is an international, interdisciplinary, English-language publication of original contributions concerning studies of the preparation, performance, and evaluation of biomaterials; the chemical, physical, toxicological, and mechanical behavior of materials in physiological environments; and the response of blood and tissues to biomaterials.
Absorbable Polymer Technologies, Inc. (APT) is a research and development-based company specializing in the design and development of biodegradable-polymer formulations for controlled-release pharmaceuticals, and medical devices for enhanced therapies.
biomed.tamu.edu /biomaterials/Polymers.htm   (1418 words)

  
 The Effect of Fillers on Adhesion of Polymer Interfaces
Polymer adhesion is of great current interest in industrial applications, because the joining of polymers can allow one to combine properties of more than one material.
Therefore, simply joining the polymer slabs when carbon fl is present for a longer period of time may eventually offset the negative effect, and allow for adhesion comparable to that of the pure system.
Exfoliated clay is known to decrease the permeability of gases in polymers by physically blocking the passage of gas molecules.
polymer.matscieng.sunysb.edu /anshul01/anshul.html   (3642 words)

  
 Polymer   (Site not responding. Last check: 2007-10-22)
Polymer blends are a key component of current polymer research and technology, because of their ease of production of new materials by mixing and the diversity of properties that result.
Polymers utilization in all domains of technique is, beyond any doubt, a reality of our times and the specialists appreciate that polymeric materials are the "materials of the future".
The mechanism of polymers oxidation, the consequences of the oxidation on the polymer structure and properties and the way in which the antioxidant acts for limiting the effects of oxidation are well known.
www.library.tuiasi.ro /ipm/vol13no12/polymer.html   (5366 words)

  
 Edward Boas -- Polymer attaching to a surface   (Site not responding. Last check: 2007-10-22)
Notice that binding is not a discrete process: various parts of the polymer attach and detach before forming a tight bond.
The most effective polymer we synthesized was a polyacrylamide with CFTR peptide covalently attached to 0.5% of its acrylamide subunits.
This simulation demonstrates that the polymer binds to the surface cooperatively.
b435-boas.stanford.edu /home/science/polymer   (282 words)

  
 Polymer Institute
His current research interests are focused on phase equilibrium in polymer blends and solutions and on the characterization of polymer solutions and dispersions by dynamic light scattering.
His current research interest is oriented on the miscibility in polymer blends leading to understanding of their physical and mechanical properties and on the development of pressure sensitive adhesives.
Since October 2002 she is the Ph.D. student at the Polymer Institute working on the topic “Controlled release of (bio)active substances from polymer matrices” (supervised by Dr. Igor Lacík) focused on the technology and polymer chemistry associated with the microcapsule formation.
www.polymer.sav.sk /lacikpeople.html   (1081 words)

  
 Oilfield Glossary: Term 'polymer'
Some polymers are naturally occurring, such as xanthan gum, guar gum and starch.
Polymers may be classified by their structure and may be linear, branched or less commonly cyclic.
A small polymer may be a deflocculant, whereas a large polymer of the same type may be a flocculant.
www.glossary.oilfield.slb.com /Display.cfm?Term=polymer   (171 words)

  
 Self Assembly Technique Produces Complex Polymer Structures
Formation of the structure begins by dissolving a coil-like polymer such as polystyrene in a fast-evaporating solvent such as toluene or benzene.
The solution containing the dilute (0.1 to 5 percent by weight) polymer is placed on a glass slide, and moist air is directed across it as the solvent evaporates.
The process repeats itself for one to two minutes until all of the solvent is evaporated, producing a three-dimensional pattern of closely packed water droplets preserved in the polymer film.
gtresearchnews.gatech.edu /newsrelease/POLYMERFILM.html   (927 words)

  
 Polymers at UMass, Amherst
The Polymer Science and Engineering Department (PSE) at UMass Amherst is a premier Graduate Education and Research program and has achieved international recognition.
The Center for UMass/Industry Research on Polymers (CUMIRP) is the campus link to Industry and Government Agencies for collaborative polymer programs.
The nature of their polymer research is from the perspective of the departmental discipline.
www.polymer.org   (381 words)

  
 Polymer Database PoLyInfo
Information on polymers including properties, chemical structures, IUPAC names, processing methods of measured samples, measurement conditions, monomers, and polymerization methods are stored in a object database.
homopolymers, copolymers, and polymer blend, composites and compounds that consist of homopolymers and copolymers are open to the public.
Polymer Structure Search: In "By parts," a search is done by specifying the type and quantity of an atom group (basic element) included in the constitutional unit of polymer.
polymer.nims.go.jp /polyinfo_top_eng.htm   (445 words)

  
 Polymer Clay
Polymer Clay is not something found in the earth, but in fact is PVC (polyvinyl chloride) plastic.
Most polymer clay artists sand and buff their creations, but they may be painted, lacquered, tumbled and/or waxed.
There is a National Polymer Clay Guild, as well as a number of local guilds.
home.pacbell.net /jvan2636/polyclay.htm   (947 words)

  
 Polymer Analysis - Title
If a polymer chain is attached to the bond sticking straight up and the chain is attached to one of the legs of the tripod then substitutent groups attached to the other two legs have a choice of being placed to the right or left.
In many polymers resolution of splittings for individual stereochemical peaks is not possible and this is illustrated by the PVC spectra.
One reason for studying polymers in solution is that the anisotropy of the magnetic moment with respect to the macromolecule (Chemical Shift Anisotropy, CSA) is averaged out due to thermal motion of the molecule in solution.
www.eng.uc.edu /~gbeaucag/Classes/Analysis/Chapter6.html   (3704 words)

  
 Welcome to Polymer Technologies   (Site not responding. Last check: 2007-10-22)
Polymer Technologies Inc. is pleased to announce the opening of its latest facility in San Luis Potosi, Mexico.
C.V. is a state of the art 41,000 square foot manufacturing facility located in the heart of Mexico.
Polymer Tech Mexico is servicing customers based in Mexico, United States and Canada.
www.polymer.ca   (142 words)

  
 Polymers: Experiment 3
Objective: The objective of this experiment is to cross-link a polymer and observe the changes in the physical properties as a result of this cross-linking.
The changes in physical properties of a cross-linked polymer are also studied as the temperature is varied.
If the rigidity of a polymer is noticed to decrease when a critical temperature is reached, the polymer is called a thermoplastic.
matse1.mse.uiuc.edu /~tw/polymers/f.html   (1154 words)

  
 Polymer: Original Rock Music From a Philadelphia Band   (Site not responding. Last check: 2007-10-22)
Polymer is an explosive rock band from Philadelphia that has developed a reputation for having one of the most energetic stage shows around.
Polymer’s music is original rock, highlighted by their catchy songwriting, elaborate instrumentation and four part vocals.
All content is the sole property of Polymer and may not be reproduced without permission.
www.polymermusic.com   (100 words)

  
 B.U. Center for Polymer Studies:JAVA Applets
But common to all polymers are long monomer chains in which no two monomers can occupy the same place, i.e., they have an ``excluded volume.'' In other words, polymer chains cannot self-intersect.
Polymers can become entangled and form messy coils like a length of thread or a shoelace.
Thus he calculated the free energy of a polymer chain as a sum of the free energy of the real gas and the entropic contribution from the random walk.
polymer.bu.edu /java/java/saw/saw.html   (1240 words)

  
 Polymer Laboratories' Company Website   (Site not responding. Last check: 2007-10-22)
Polymer Laboratories develops techniques and instrumentation for the characterization of polymer systems, and develops high technology polymer products for liquid chromatography, diagnostic and pharmaceutical applications.
Polymer Laboratories operates from offices in the USA, UK and Europe, and for maximum global availability and service, PL products are also supported by a technical worldwide distributor network.
Polymer Laboratories is now part of Varian, Inc.
www.polymerlabs.com   (90 words)

  
 Immiscible Polymer Blends
The domains of polymer B are now joined together, but so are the domains of polymer A. When this happens we say that the polymer A phase and the polymer B phase are co-continuous.
Polymer B is now the major component and polymer A is the minor component, and the situation is reversed from what we had at first.
When polymer A and polymer B are present in roughly equal amounts, they form two co-continuous phases.
www.pslc.ws /macrog/iblend.htm   (2101 words)

  
 The MSDS HyperGlossary: Polymerization
A polymer is a substance made up of many repeating units (called monomer units).
Polymers are usually distinguished by a high molar mass (formula weight), often ranging into thousands or millions of grams per formula unit.
Polymerization is the process by which monomers (smaller chemical units) are combined to form a polymer.
www.ilpi.com /msds/ref/polymer.html   (332 words)

  
 Infotrope Polymer
Polymer runs under Linux, supports IMAP, should support large amounts of mail fast (he says he had a problem there), is standards-compliant, supports as much Unicode as Python does, supports RFC2476, is lightweight (or intended to be), and supports ACAP.
Finally, Polymer is specifically designed to co-exist with other email clients, by its use of ACAP and IMAP as data storage and access.
Polymer already compresses the IMAP, ACAP and ESMTP connections if your servers support STARTTLS, and both ends are using OpenSSL 0.9.8, which, as I understand it, does all this automatically.
dave.cridland.net /acap/polymer.html   (1431 words)

  
 Encyclopedia Of Polymer Science And Technology - Encyclopedia Shop   (Site not responding. Last check: 2007-10-22)
The encyclopedia covers all areas of polymer science including nanotechnology, imaging and analytical techniques, controlled polymer architecture, …
This is the third Edition is a completely new version in a new century of the Encyclopedia of Polymer Science and Technology.
Dyeing cellulose fibers with reactive disperse dyes in supercritical carbon dioxide
www.ecaseload.com /encyclopedia-of-polymer-science-and-technology.html   (375 words)

  
 Polymer   (Site not responding. Last check: 2007-10-22)
Monitors may thus be used to implement any number of common tasks including auditing and logging of program actions, access control, resource monitoring, denial of service prevention, visualization of program execution, online program transformation, and others.
The Polymer project studies all facets of the theory, design, and implementation of software program monitors and monitor-specification languages.
We are particularly interested in understanding the range of security properties that can be enforced by program monitors and using monitors to provide secure and reliable platforms for executing untrusted (mobile) code.
www.cs.princeton.edu /sip/projects/polymer   (197 words)

  
 encyclopedia of polymer science and technology   (Site not responding. Last check: 2007-10-22)
… Wiley andgt; Chemistry andgt; Polymer Science and Technology andgt; General Polymer Science and Technology andgt; Encyclopedia of Polymer Science and Technology, 12 Volume Set.
… Encyclopedia of Polymer Science and Technology, 3rd Edition, Volumes 5-8, Part 2, 3rd Edition.
… Wiley andgt; Chemistry andgt; Polymer Science and Technology andgt; General Polymer Science and Technology andgt; Encyclopedia of Polymer Science and Technology, Volumes 5-8, Part 2.
www.jolietpages.com /encyclopedia-of-polymer-science.html   (246 words)

  
 Polymer   (Site not responding. Last check: 2007-10-22)
About 30 minutes ago I removed the original Data Center application, which was Polymer’’s evolutionary forebear, and replaced it with a version that runs as a truly separate application running on top of the most current version of the Polymer matrix.
At the same time, that Polymer release must be capable of supporting all the features and functionality of the database app, whether by native features or by providing for customization.
The feature set is starting to gel, as is the concept of Polymer’’s role in containing an application, along with instructions for installation and setup, and other things that will be necessary at some basic stable level before we can really expect anybody to try and work with this program.
polymerdb.org   (1633 words)

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