Gas separation properties of hybrid imide–siloxane copolymers with various silica contents

• Published in: Journal of membrane science Vol. 161; no. 1; pp. 157 - 170
• Main Authors: Smaihi, Monique, Schrotter, Jean-Christophe, Lesimple, Chantal, Prevost, Isabelle, Guizard, Christian
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.08.1999; Elsevier
• Subjects: Applied sciences; Composites; Exact sciences and technology; Forms of application and semi-finished materials; Gas permeation; Polyimide-silica; Polymer industry, paints, wood; Sol-gel; Technology of polymers; Polyimide-silica; Gas permeation; Sol-gel; Polyimide; Transport properties; Molecular structure; Aromatic polymer; Temperature effect; Experimental study; Polyaddition; Silica; Thermal stability; Pyromellitimide polymer; Gas permeability; Sol gel process; Morphology; Preparation; Concentration effect; Selective permeability; Silicon polymer

Hybrid polyimide–siloxane copolymers containing different proportion of silica have been prepared by polycondensation, imidisation and sol–gel coreaction of pyromellitic dianhydride, aminoalkoxysilane and tetramethoxysilane. Two types of aminoalkoxysilane (aminopropyltrimethoxysilane and aminopropyl...