Polymers
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (10 张)
how are Condensation polymers are formed
Dicarboxylic acid + diol → polyester + water Ester links are formed and water is eliminated.
Why are polyalkenes non-biodegradable?
they contain strong non polar C-C bonds which cant be hydrolysed
What is an advantage of recycling polymers?
Conserves raw materials and reduces waste.
What is a disadvantage of recycling polymers?
Recycling can be expensive. Recycling uses energy.
Q: Why can polyesters and polyamides be hydrolysed but polyalkenes cannot?
Polyesters and polyamides contain hydrolysable ester or amide links. Polyalkenes contain only C–C and C–H bonds and do not contain hydrolysable functional groups.
What are the properties of polyesters
Strong, flexible fibres.
What are polyesters used for?
FABRICS
What are the properties of polyamides?
A: Strong and tough due to hydrogen bonding between polymer chains.
What problem is associated with the disposal of addition polymers?
They are non-biodegradable and can accumulate in landfil
: Explain the nature of the intermolecular forces between molecules of condensation polymers.
Condensation polymers contain polar bonds. Permanent dipole–dipole attractions exist between polymer chains. Polyamides also contain N–H bonds and therefore form hydrogen bonds between chains.