Q. Dacron is obtained by the condensation polymerization of
A) Dimethyl terephthalate and ethylene glycol
B) Terephthalic acid and formaldehyde
C) Phenol and phthalic acid
D) Phenol and formaldehyde
Explanation
(a)
Dacron or terylene is a condensations polymer (a polyester) of ethylene glycol and terephthalic acid. Generally dimethyl terephthalate is used inspite of terephthalic acid.
$nHO - CH_{2} - CH_{2} - OH + n\ H_{3}COOCC_{6}H_{4}COOCH_{3}\ \rightarrow$
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Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.