Polymerisation

Question 1

what are the two types of polymerisation

Answer 1

addition and condensation

Question 2

what is addition polymerisation

Answer 2

when an unsaturated monomer reacts to form a polymer/monomer with a c double bond

Question 3

what is condensation polymerisation

Answer 3

when 2 different monomers react together and water is eliminated, the types of polymers are polyamides, polyesters and polypeptides

Question 4

how are polyamides formed

Answer 4

dicarboxylic acid and diamines

Question 5

what is kevlar

Answer 5

an polyamide which is used in bulletproof vests, car tyres etc
it is made up of benzene-1,4-dicarboxylix acis

Question 6

nylon 6,6

Answer 6

used in ropes and carpets etc
hexanedioic acid and 1,6-diaminohexane

Question 7

polyesters are formed from

Answer 7

dicarboxylic acids and diols

Question 8

terylene is

Answer 8

a polyester used in plastic bottles
made up of benzene 1,4 dicarboxylic acid and ethane-1.2.diol

Question 9

why do condensation polymers contain polar bonds

Answer 9

due to the c-o and c-n bonds so they are more stronger
they also have hydrogen bonds and dipole dipole bonds and vdw forces

Question 10

disposal of plastics

Answer 10

landfill
incineration - rubbish is burnt and energy is produced to generate electricity
recycling

Question 11

advantages and disadvantages of recycling plastics

Answer 11

disadvantages - can be contaminates when being recycled
difficult to remake original from recycled
its expensive to sort and process
advantages - it is cheaper to recycled than to make from scratch
less co2 is produced recycling then incinerating
reduces landfill reliance
preserves non renewable raw materials