condensation polymers

Give one reason why polyester is biodegradable

Can hydrolysed

Can react with nucleophililes due to polar bonds

Explain why polyamides can be made into fibres and polyalkenes are usually too weak for this purpose

Polyamides have H bonds between molecule

Which are stronger than /strongest IMF

compared to polyalkenes which only have VDW forces between molecules

What reactants from terylene (PET)

Benzene -1,4 dicarboxylicacid

Ethane-1,2-diol

Draw reactants and repeating unit of terylene

What reactants form nylon 66

Hexanedioic acid

1,6-diaminohexane

Draw the reactants and repeating unit for nylon 66

State the reactants which form Kevlar

Benzene-1,4-dicarboxylic acid

Benzene-1,4 diamine

Draw the reactants and repeating unit for Kevlar

Give advantages and disadvantages of land fill

+cheap,easy

-decomposes to form methane greenhouse

Give advantages and disadvantages of burning

+can use to generate heat and electricity

-co2 produced,

State advantages and disadvantages of recycling

+less CO2,saves raw material

-labour to sort plastic,costs more