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Sur une méthode d'obtention de polymeres en poudre par précipitation
Author(s) -
Chapiro Adolphe,
Palma Giancarlo
Publication year - 1966
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1966.070100612
Subject(s) - polymer , precipitation , polymer chemistry , materials science , melting point , glass transition , cloud point , polymer science , chemical engineering , chemistry , composite material , aqueous solution , physics , meteorology , engineering
Many polymers can be obtained in powder form by precipitation from dilute solutions under well‐defined conditions. For this purpose the precipitant is first added gradually until a permanent cloudiness is reached. At this point a large excess of precipitant is suddenly poured into the solution. Many examples are given. Very fine powders have also been obtained from gummy or rubberlike polymers by carrying out the precipitation at a temperature below the glass transition point of the polymer.