1. Preparation
The polycondensation reaction is a balanced reaction between the end groups —NH 2 (amine) and —COOH (acid) leading to the formation of —CONH— (amide) groups and water.
The polymer obtained at the end of the reaction, possibly in the presence of a chain limiter, therefore still contains a certain amount of water, residual monomer(s) and oligomers.
Careful drying is necessary before subsequent use, otherwise there is a risk of equilibrium displacement with a reduction in molecular weight.
1.1 Base polymer preparation processes
Melt polyaddition/polycondensation and low-temperature solution polycondensation are still the most commonly used industrial methods....
The Ultimate Scientific and Technical Reference
This article is included in
Plastics and composites
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Preparation
Economic aspects
Main producers
The names of manufacturing companies, their locations, the types of polyamides manufactured and their brand names are given in tables and .
Bibliography
Theses
- - http://www.sudoc.abes.fr
- QUEDE (A.) - Procédé de dépôt en couche mince par polymérisation assistée par plasma d'azote pour la protection ignifuge des polyamides-6. - Université des sciences et technologies...
The Ultimate Scientific and Technical Reference
