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…
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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…
Polymer Science 3 min read
SUSPENSION POLYMERIZATION
Suspension polymerization, sometimes called bead, pearl or granular polymerization, is one of the most widely used polymerization techniques. It is essentially a water or solvent cooled…
Polymer Science 4 min read
EMULSION POLYMERIZATION
Emulsion polymerization is one of the most important methods for the polymerization of a large number of monomers, like vinyl…
Polymer Science 3 min read
BULK OR MASS POLYMERIZATION
In mass or bulk polymerization, the reaction mixture consists mainly of monomers, and in the case of free-radical or ionic…
Polymer Science 3 min read
ANIONIC POLYMERIZATION
Anionic polymerization is a form of chain-growth polymerization that encompasses the polymerization of vinyl monomers with strong electronegative groups. This…
Polymer Science 2 min read
CATIONIC POLYMERIZATION
Many vinyl monomers readily polymerize in the presence of very small amounts of catalyst of the type used in Friedel-Crafts…
Polymer Science 2 min read
METALLOCENE COORDINATION CATALYST
Metallocenes are very effective metal catalyst. They consist of minute particles of positively charged metal ions sandwiched between two cyclopentadienyl…
