(a) What are biodegradable
(b) Is polythene a condensation or an
(A) Biodegradable polymers are polymers that breaks down by bacterial decomposition process to result in natural byproducts such as CO2 gas, N2 gas, water etc. e.g. hydrogels, polyglycolic acid(PGA), Polyhydroxy butyrate (PHB) etc.
a) Homopolymers : Polymers whose repeating structural units are derived from only one type of monomer units are called homopolymers. Example : Polyethene, PVC, teflon.
Copolymers : Polymers whose repeating
structural units are derived from two or more types of monomer molecules are copolymers.
Example : Buna-S, Nylon 6, 6
(b) Biodegradable polymers : All those biopolymers which disintegrate by themselves in biological systems during certain period of time by enzymatic hydrolysis are called biodegradable polymers.
Example : Poly-p-Hydroxybutyrate-Co-p-Hydro- xyvalerate (PHBV)
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