Search results
Results from the WOW.Com Content Network
Polymer Database National Institute for Materials Science: physical properties "PoLyInfo". 26,000 PPDB Pesticide Properties Database Agriculture & Environment Research Unit, University of Hertfordshire: Pesticides and their metabolites Chemical structure, physicochemical properties, human health and ecotoxicological data curated "PPDB". 2000 [10]
WebUpdate allowed for the direct update of the database within the application. However, the database itself was only slowly developed, because a high standard was already achieved. A new feature was the implementation of up to three base polymers and up to two filler or reinforcements for blends. In version 5.1 this methodology was extended ...
A polymer (/ ˈ p ɒ l ɪ m ər / [4] [5]) is a substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeating subunits derived from one or more species of monomers. [6] Due to their broad spectrum of properties, [7] both synthetic and natural polymers play essential and ubiquitous roles ...
Screenshot of the CAS Common Chemistry database with information about caffeine ().. A CAS Registry Number [1] (also referred to as CAS RN [2] or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service (CAS) in the US to every chemical substance described in the open scientific literature, in order to index the substance in the CAS Registry.
The Polymer Library, formerly Rapra Abstracts, [1] is a searchable database of research on plastics, rubbers, polymeric composites, and adhesives.It includes abstracts from over 450 journals, as well as company literature, data sheets, and patents. [2]
Polymer morphology is a microscale property that is largely dictated by the amorphous or crystalline portions of the polymer chains and their influence on each other. Microscopy techniques are especially useful in determining these microscale properties, as the domains created by the polymer morphology are large enough to be viewed using modern ...
Polymer chemistry is a sub-discipline of chemistry that focuses on the structures of chemicals, chemical synthesis, and chemical and physical properties of polymers and macromolecules. The principles and methods used within polymer chemistry are also applicable through a wide range of other chemistry sub-disciplines like organic chemistry ...
Polymers that are formed by free-radical mechanisms such as polyvinyl chloride are usually atactic. [citation needed] Due to their random nature atactic polymers are usually amorphous. [citation needed] In hemi-isotactic macromolecules every other repeat unit has a random substituent. [citation needed]