What are stereoregular polymers?

(also stereospecific polymer), any one of the polymers whose linear molecules consists of monomeric units having either identical spatial configurations or configurations that, while not identical, alternate in regular fashion.

Which polymerization process is used for preparation of stereoregular polymer?

Chain Polymerization I Grignard reagents, such as phenylmagnesium bromide or n-butylmagnesium bromide, initiate acrylic and related monomers and produce stereoregular polymers.

Which classification is known as Stereoregular polymer?

structure and properties … polymers are referred to as stereoregular—that is, polymers having an ordered arrangement of pendant groups along the chain. A polymer with a random orientation of groups is said to be atactic.

How are complex polymer parts formed?

Polymerization is the method of creating synthetic polymers by combining smaller molecules, called monomers, into a chain held together by covalent bonds, according to ThoughtCo., an online educational resource.

Can a Stereospecific Polymerization be a Stereoselective polymerization?

It is to be noted that the stereospecific polymerization of propylene cannot be a stereoselective polymerization because the starting monomer, propylene, has no chiral center. S. Li, in Science and Principles of Biodegradable and Bioresorbable Medical Polymers, 2017

How are Stereoregular poly and acryloyl chloride prepared?

THE PREPARATION AND PROPERTIES OF STEREOREGULAR POLY (N-SUBSTITUTED ACRYLAMIDES) Poly (acryloyl chloride), prepared by free radical polymerization in solution and presumed to be highly syndiotactic, was reacted with amines to form N-monosubstituted acrylamide polymers.

How are crystals produced in a stereoregular polymer?

As with many other stereoregular polymers, simple linear polysaccharides, once dissolved and recrystallized, can yield single crystals (see Figure 8 ). In other instances, crystalline arrangement of polysaccharides occurs as concomitant to biosynthesis, as in cellulose, starch, chitin, etc.

How are phase transitions of stereoregular polymers controlled?

Stereoregular polymers obtained by isotactic polymerization of 4-alkylcyclopentenes are liquid crystalline, and their phase transition temperature can be controlled by the length of alkyl group of the monomer. G.H. Zohuri, S.A. Miller, in Polymer Science: A Comprehensive Reference, 2012