13.8 Condensation Polymers Flashcards
What does the -NH2 group react with and what does it produce?
It reacts with COOH group in carboxylic acids (or CO-Cl) group in acyl chloride and produces a secondary amide group.
What is a condensation reaction?
A condensation reaction is when two molecules react together to form a larger molecule with the elimination of a small molecules such as water or HCl.
How can we make a polymer chain?
If we use diamines and dicarboxylic acids which have reactive groups in two places in their molecules, therefore monomer units are linked together by amide groups.
What is the process called where monomer units are linked together by amide groups?
Condensation polymerisation.
What are examples of diamine and dicarboxylic acid?
1,6-diaminohexane
Hexanedioic Acid
Why is it called a polyamide (nylon)?
Because the group linking the monomer groups together is an amide group.
Why is an acyl chloride derivative acid used in the laboratory?
Because the reaction between diamine and dicarboxylic acid is quite slow.
Example of a diamine reacting with an acyl chloride derivative acid.
1, 6-diaminohexane and decanedioyl dichloride.
What is eliminated instead of water?
HCl
What group do Proteins contain?
CO-NH- group
What is the amide link called in proteins?
Peptide link and the monomers are amino acids.
