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What are the differences between polyamide and polyimide?
Posted August 31, 2022
Answer
The differences between polyamide and polyimide are listed in the table below.
| Polyamide | Polyimide |
| Is a synthetic polymer made by the linkage of an amino group of one molecule, and a carboxylic acid group of another molecule | Is a very strong polymer made from imide monomers |
| Has recurring amide linkages | Has recurring imide linkages |
| Its monomers are diamines and dicarboxylic acids | Its monomers are either dianhydride and diisocyanate or dianhydride and diamine |
| Examples are nylon, Kevlar (synthetic polyamides) and wool and silk (natural polyamides) | Examples are Kapton, Apical, and Kaptrex |
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