What are chain growth polymers examples?

What are chain growth polymers examples?

Many common polymers can be obtained by chain polymerization such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), [poly(methyl methacrylate) (PMMA), polyacrylonitrile (PAN), polyvinyl acetate (PVA).

Which of the following polymer is chain growth polymer?

Chain growth polymer is a polymer which is formed when molecules of the same monomer or different monomers add together on a large scale to form the polymer. Teflon is a chain growth polymer as the molecules of tetrafluoroethylene (monomer) simply add together to form the polymer. Hence Option A is the correct answer.

What is a chain polymer?

A carbon atom bonded to 2 hydrogen atoms can be considered a building block or unit of the polymeric chain. These units make up monomers, which are repeating units in the molecular chain structure. A series of monomers bonded together to form a molecular chain is known as a polymer.

What are chain growth and step growth polymers?

In chain growth, the polymer chain always grows one monomer at a time. In step growth, the polymer chain doubles with each step. As a result, the rate of growth of the polymer chain is very different in these two cases. Chain growth results in a steady increase in chain length with every coupling step.

Is Bakelite a chain growth polymer?

Bakelite is an example of step growth polymer.

Which of the following is a chain growth polymer PVC?

PVC is an addition ( chain growth) polyme.

Which is the best monomer for getting chain growth polymer?

Chain growth may be terminated by water or carbon dioxide, and chain transfer seldom occurs. Only monomers having anion stabilizing substituents, such as phenyl, cyano or carbonyl are good substrates for this polymerization technique.

What is the difference between step growth polymer and chain growth polymer?

The key difference in both step and chain-growth polymerization is that in chain growth, the polymer chain always grows one monomer at a time. On the other hand, in step-growth, the polymer chain doubles with each step.

What happens to polymer chains?

Polymer chains can fall into one of the three molecular categories: linear, branched, and crosslinked. Much of polymer therapeutics research involves the synthesis of linear polymers. The methods to produce these often result in a heterogeneous, polydisperse mixture of compounds.

How Step growth polymers differ from chain growth polymers?

Monomers bind together to form polymer chains. The main difference between chain growth polymerization and step growth polymerization is that chain growth polymerization has a growth a polymer chain at its ends whereas step growth polymerization has a combination of oligomers to form a polymer chain.

Which is step growth polymer?

A step growth polymerization refers to a type of polymerization mechanism in which bi-functional or multifunctional monomers form first dimes, then trimers, oligomers and eventually long chain polymers.

What is chain growth?

Chain-growth polymerization. In chain growth polymerization, an activated species (initiator or active center) adds one monomer molecule to create a new active center (propagation step), which again adds another monomer molecule to create another active center and so on, so that the chain growth proceeds as a chemical chain reaction .

What is a step growth polymer?

Step-Growth Polymerization. A step-growth polymerization is a stepwise reaction between bi-functional or mult-ifunctional monomers in which a high-molecular-weight polymer is formed after a large number of steps.

What are some examples of polymers?

While plastics are used as a common example of polymers, there are many other materials which are also polymers. Polymers include: Anything plastic. Proteins, such as hair, nails, tortoise shell. Cellulose in paper and trees. DNA. Silly putty. Slime.

What is a polymer chain made of?

Polymer chains are large molecules, or macromolecules , made up of many monomers that are joined together. A monomer is a single unit of a molecule, for example, amino acids and nucleotides.