Polymers Synthetic Polymers Addition Condensation Biological Polymers Proteins
Polymers • Synthetic Polymers – Addition – Condensation • Biological Polymers – Proteins – Carbohydrates – Nucleic acids
Condensation Polymers • Two monomers • Alternate along chain: …-A-B-A-B-… • React to condense out small molecule (usually H 2 O or HCl) as polymer chain grows
Condensation Polymers H 2 O H–O O–H H–O H 2 O H–O O– O–H H–O O O–H O–H
“Real” Example O HCl O H–N–CH 2–CH 2–NH 2 Cl–C–CH 2–CH 2–C–Cl H O O Cl–C–CH 2–CH 2–C–N–CH 2–CH 2–N–H H O H 2 N–(CH 2)4–N–H H H O O Cl–C–(CH 2)4–C–N–(CH 2)4–N–H H H O Cl–C–(CH 2)4–C–Cl
“Real” Example O O O Cl–C–(CH 2)4–C–N–(CH 2)4–N–H H 2 N–(CH 2)4–N–H H H Cl–C–(CH 2)4–C–Cl H O O H 2 N–(CH 2)4–N–C–(CH 2)4–C–Cl H H O O O …. –N–(CH 2)4–N–C–(CH 2)4–C–…. H H O
Problem Two monomers are drawn below. Draw the condensation polymer that they form. What is the condensation product? O HO– –OH + O H–O–C–CH 2–CH 2–C–O–H
Problem H 2 O O HO– –OH + O …O– O H–O–C–CH 2–CH 2–C–O–H O –O–C–(CH 2)4–C–O– O O –O–C–(CH 2)4–C–…
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