Frank N. Kelley, dean of the College of Polymer Science and Polymer Engineering at the University of Akron, provides the following explanation. Synthetic polymers are produced by chemical reactions, termed "polymerizations." Polymerizations occur in varied forms--far too many to examine here--but ...
Addition (Chain-growth) Polymers. Unlike condensation (step-growth) polymers, which release small molecules, like water, as they form, the reactions that lead to addition, or chain-growth, polymers incorporate all of the reactants atoms into the final product.
Structure, formula, and classification of carbohydrates, saccharides or sugars, chemistry tutorial.
Polymers are of two types: Natural polymeric materials such as shellac, amber, wool, silk and natural rubber have been used for centuries. A variety of other natural polymers exist, such as cellulose, which is the main constituent of wood and paper.
Position along chain. Related commands: color [object] group, color [object] monomer A reverse rainbow gradient (bgyor) is used to color according to position of the corresponding groups or residues (for example, amino acids or nucleotides) along a chain.
Since their discovery and development in the 20th century, acrylic polymers have become an integral part of numerous industries and are used in a myriad of applications.
Aloorkar et al: Star Polymers: An Overview 1677 final properties of the resulting star-shaped polymers (e.g., star-block and heterostar copolymers) may be
Polymers formed in this way, where both ends of the growing chain have functional groups which can react with a monomer or with the appropriate functional group on another chain, are called step-growth polymers.
Polymers. Alkenes can be used to make polymers. Polymers are very large molecules made when many smaller molecules join together, end-to-end. The smaller molecules are called monomers.
DURECT's line of LACTEL Absorbable Polymers are a leading, world-wide provider of biodegradable polymers for the drug delivery and medical device industries. LACTEL polymers have been used in numerous FDA approved medical devices and pharmaceutical products.
Polymers 1. Introduction. Prior to the early 1920's, chemists doubted the existence of molecules having molecular weights greater than a few thousand.
The word polymer designates an unspecified number of monomer units. When the number of monomers is very large, the compound is sometimes called a high polymer. Polymers are not restricted to monomers of the same chemical composition or molecular weight and structure.
Entry: 115. Corrosion inhibition Corrosion can be defined as the unwanted production of a salt from a metal. Adding acid or oxygen are good ways to do this. The main ways of slowing corrosion down (inhibition) are by providing an impermeable coating to stop the chemical reaction from occuring in the first place, or by providing a more easily ...
All plastics contain polymers, but not all polymers are plastic.
Lipids do not have monomers. They have a backbone mineral called glycerol, which is similar to a monomer.
Polymers, an international, peer-reviewed Open Access journal.
SciFinder Training: Search Hybrid or Post-treated Polymers. Using four different examples, learn techniques to find hybrid polymers. 1) Learn how to conduct a molecular formula search of a hybrid polymer.
Plastics and natural materials such as rubber or cellulose are composed of very large molecules called polymers.Polymers are constructed from relatively small molecular fragments known as monomers that are joined together.
Classification. Monomers can be classified in many ways. They can be subdivided into two broad classes, depending on the kind of the polymer that they form.