Question 13 Marks
Write the names and structures of the monomers of the following polymers?
(i) Buna-S
(ii) Buna-N
(iii) Dacron
(iv) Neoprene
(i) Buna-S
(ii) Buna-N
(iii) Dacron
(iv) Neoprene
Answer
View full question & answer→The names and structure of monomers are :
(i) Buna-S $\quad 1,3$-Butadiene $\quad CH _2= CH - CH = CH _2$
styrene $\quad C _6 H _5 CH == CH _2$
(ii) Buna-N 1, 3-Butadiene $CH _2== CH - CH == CH _2$
Acrylonitrile $\quad CH _2= CHCN$
(iii) Dacron Ethylene glycol $CH _2 OH - CH _2 OH$
(i) Buna-S $\quad 1,3$-Butadiene $\quad CH _2= CH - CH = CH _2$
styrene $\quad C _6 H _5 CH == CH _2$
(ii) Buna-N 1, 3-Butadiene $CH _2== CH - CH == CH _2$
Acrylonitrile $\quad CH _2= CHCN$
(iii) Dacron Ethylene glycol $CH _2 OH - CH _2 OH$
are called polyesters and are prepared by condensation of polymerisation of dicarboxylic acids with diols.