Question

The straight chain polymer is formed by:

• A. hydrolysis of $C{H}_{3}SiC{l}_3$ followed by condensation polymerization.
• B. hydrolysis of $(C{H}_3{)}_{4}Si$ followed by addition polymerization.
• C. hydrolysis of $(C{H}_3{)}_{2}SiC{l}_2$ followed by condensation polymerization.
• D. hydrolysis of $(C{H}_3{)}_{3}SiCl$ followed by condensation polymerization.

Answer 1

The correct option is C hydrolysis of $(C{H}_3{)}_{2}SiC{l}_2$ followed by condensation polymerization.

Hydrolysis of substituted chlorosilanes yields corresponding silanols which undergo polymerisation. Out of the given chlorosilanes, only $(C{H}_3{)}_{2}SiC{l}_2$ will give linear polymer on hydrolysis followed by polymerisation.
$(C{H}_3{)}_{2}SiC{l}_2+2H_{2}O\to (C{H}_3{)}_{2}Si(OH{)}_2$