Polymer Science 5 min read
Fractionation of Polymers
Introduction In the working group of Professor Wolf two different kinds of polymer fractionation techniques were developed. They allow the…
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Polymer Science 4 min read
MOLECULAR WEIGHT AND MOLECULAR WEIGHT DISTRIBUTION
The polymerization process, whether proceeding by chain growth or by step-growth, is ruled by random events. The result is a mixture of polymers…
Polymer Science 3 min read
Molecular Weight Definition
Molecular weight is a measure of the sum of the atomic weight values of the atoms in a molecule. Molecular weight is used in chemistry…
Polymer Science 2 min read
Polymer Solutions
The importance assigned to polymer solutions, a topic whose discussion has evolved from a mere informative mention in textbooks to…
Polymer Science 2 min read
SOLUTION POLYMERIZATION
In solution polymerization, the monomer, initiator, and the resulting polymer are all soluble in the solvent or solvent blend. In…
Polymer Science 1 min read
What is Rotational Moulding?
Rotational moulding is a unique plastic moulding process used primarily to create seamless, stress-free, hollow one-piece items. Also called rotomoulding, it is…
Polymer Science 5 min read
CYCLIZATION VERSUS LINEAR POLYMERIZATION
The first theories of step-growth polymerization (SGP) were developed by Carothers, Arvin, Natta, and Dorough in the 1930th.1-5 Carothers and coworkers…
Polymer Science 4 min read
MOLECULAR WEIGHT DISTRIBUTION IN LINEAR STEP-GROWTH POLYMERS
The molecular weight distribution of a linear condensation or addition polymer can be easily calculated if we assume that each…
Polymer Science 2 min read
Condensation Reactions
In a condensation reaction, two molecules or parts thereof combine, releasing a small molecule. When this small molecule is water,…
Polymer Science 4 min read
What are Copolymers?
A copolymer is a polymer that is made up of two or more monomer species. Many commercially important polymers are…
