Synthetic polyamides - class-XII

Chloroprene 
Nylon $6-6$ is formed by hexamethle dlamine and adipic acid so it is copolymer polymer and condensation
$\therefore $ it is not homopolymer

Nylon-$6,6$ is a polyamide obtained from the condensation polymerization of adipic acid with hexamethylenediamine.
Nylon-$6,6$ contains hydrogen bonding interactions due to the presence of amide linkages.

TEFLON - It is an addition polymer of carbon tetraflouride.
$n CF _{2} = CF _{2} \xrightarrow[High  pressure]{Catalyst} \left [ -CF _{2} - CF _{2}- \right ] _{n}$
                                                    Teflon
$\because $ The shift forming a chain in addition polymer, the empirical formula remains the same.

Perlon-L is also known as nylon-$6$. It is obtained by heating caprolactum with water at a high temperature. It is used in making textiles and ropes.

PHBV is common name of Poly $(3-hydroxybutyrate-co-3-hydroxy$ $valerate)$ which is biodegradable, non-toxic, bi compatible plastic produced naturally by bacteria. It is a thermoplastic linear aliphatic polyester.

Nylon 6,6 chains are held together by strong intermolecular hydrogen bonding between the carbonyl oxygen of one chain and the amide hydrogen of another.

Nylon 6,6 chains are held together by strong intermolecular hydrogen bonding between the carbonyl oxygen of one chain and the amide hydrogen of another.

Nylon - $6,:6$ has high mechanical strength and superior resistance to wear and organic chemicals.
It has more than double the strength and stiffness of unreinforced nylon.
Nylon has $-NH-CO-$ bond which results in intermolecular H-bonding.
Terlyene has no H-bonding and has only weak dipole-dipole interactions and hence, nylon - $6,:6$ has higher tensile strength compared to that of terylene.

Nylon-6,6 (PA66) is semicrystalline polyamide commonly used in fiber applications such as carpeting, clothing, and tire cord. 

Nylon 66 is made of two monomers each containing 6 carbon atoms, hexamethylenediamine and adipic acid, which give nylon 66 its name.

Porlon-L is a polyamide and a linear non-aromatic structure.

in nylon, there is strong intermolecular hydrogen bonding between hexamethylene di ammine and di adipic acid,

Nylon is used as fiber because, it is very important substitute of silk, it's other properties is elasticity, strength and resistance for mildew.

Polyamides have the amide linkage.

N-vinylpyrrolidone has a double bond in the vinyl group and one in the carbonyl group (2 total). Perlon-L (Caprolactam) has one double bond in the carbonyl group. The ratio is 2:1.

Only nylon does not have vinylic monomer units.

The polymer formed by the condensation of hexamethylenediamine $\displaystyle (H _2N-(CH _2) _6-NH _2)$ and adipic acid $\displaystyle (HOOC-(CH _2) _4-COOH)$ is Nylon-66.
$\displaystyle H _2N-(CH _2) _6-NH _2+HOOC-(CH _2) _4-COOH  \xrightarrow {\Delta} H _3N^+-(CH _2) _6-NH _3^+O^-OC-(CH _2) _4-COO^-$