Polymers

Question 1

What are two types of polymerisation

Answer 1

Addition

Condensation

Question 2

When does addition polymers form

Answer 2

An addition polymer forms when unsaturated monomers react to form a polymer

Chain forms when same basic unit is
repeated over and over.

Question 3

Two reasons why poly alkenes are chemically inert

Answer 3

Poly(alkenes) are chemically inert due to the strong C-C and C-H bonds and

non-polar nature of the bonds and therefore

Question 4

What are the two most common types of condensation polymers

Answer 4

The two most common types of
condensation polymers are polyesters
and polyamides

Question 5

What is the reaction to form a poly ester

Answer 5

dicarboxylic acid + diol —>poly(ester) + water

diacyl dichloride + diol —>poly(ester) + HCl

Question 6

What is the reaction for forming poly amides

Answer 6

dicarboxylic acid + diamine ->poly(amide) + water

diacyl dichloride + diamine ->poly(amide) + HCl

Question 7

What is a common polyester

Answer 7

Terylene

Question 8

What is the reaction to form terylene

Answer 8

Benzene-1,4-dicarboxylic acid + ethane-1,2-diol

Question 9

What is the bi product of the reaction for all polymers

Answer 9

2N-1H2O

Question 10

What is a common polyamide

Answer 10

Nylon6,6

Question 11

What is the reaction to form Nylon 6,6

Answer 11

Hexanedioic acid + Hexane -1,6 -di amine

Question 12

What is a rule for when forming the poly amide /poly ester with carboxylic acids

Answer 12

The OH in the carboxylic acids are completely removed

The only thing that remains in the C double O bond

They oxygen from alcohol still remains,only the Hydrogens are Brocken off

Question 13

Are poly maids and polyester bio degradable

Answer 13

Yes they undergo hydrolysis and can be broken down

Question 14

How are polymers hydrolysed

Answer 14

Using acid catalyst

Question 15

What type of intermolecular forces does polyesters have

Answer 15

They have permanent dipole forces between C = O

And van der waals forces between the chains

Question 16

What type of intermolecular forces do polyamides have

Answer 16

They have hydrogen bonding between the C=O and the N-H groups

And also van def waals forces between

Question 17

Which has higher melting point polyesters or poly amides

Answer 17

Poly amides

Question 18

What are the three ways polymers are disposed

Answer 18

Landfill

Incineration

Recycling

Question 19

Describe reaction to form Kevlar

Answer 19

Benzene-1,4-dicarboxylic acid + 1,4-diaminobenzene