Polymers Flashcards
What does polymerisation include?
joining of bifunctional monomers with the Elimination of a small molecule such as water
In the formation of condensation polymers where you have two different monomers, how are the monomers normally arrange?
alternately
what is the coo functional group?
ester group
What is the functional group of a benzene?
aromatic
what can functional groups be?
cyclical- e.g. cyclical ester
What is the phenyl functional group?
benzene with r group
What happens in the formation of polyesters?
alcohol only loses H and carboxylic acid looses oH
What do the monomers that make up a polyamide join together by?
formation of amide bond
What do amines loose in polymerisation?
H
What is the the bond between polyesters?
o
II
o—c
Often in practice what are dicarboxyic acids converted to and why?
diacylchlorides which are the reacted with a diamine or diol- this is because acylchlorides are more reactive than cooh
How would I draw 2 repeats of a polymer?
draw two monomers in one box joined
Where do I draw the. box around for the repeat monomer?
when dotted line repeats
What are polypeptides?
Another form of polyamides
What are condensation polymers made from?
a single bifunctional monomer reacting with another of the same monomer or two monomers with different functional groups reacting together.
During polymerisation a small molecule like water or HCl is normally the by product.
What are condensation monomers generally?
biodegradeable through acid or base hydrolysis of the ester or amide
bond
When do addition polymers form?
when a i bond in an alkene is broken and two new bonds are formed. The polymer forms a long chain of continuous carbon atoms. They are usually made from a single monomer containing a C=C bond
What are addition polymers generally not?
biodegradeable as withstand hydrolysis
