Synthesis and Gas Permeability of Aromatic Polyamide and Polyimide Having Oligodimethylsiloxane in Main-Chain or in Side-Chain

Aromatic polyamides and polyimide having oligodimethylsiloxane of defined length (1–4 Si atoms) in main-chain or in side-chain were synthesized by polycondensation of bis(4-aminophenyl)-functionalized oligodimethylsiloxanes with acid dichloride or pyromellitic dianhydride. Glass transition temperature and gas permeability of the polymers were markedly influenced by the introduction of oligodimethylsiloxane components into the polymer. The effects was more notable in polymers having oligodimethylsiloxane as side-chains.

[1]  Y. Kawakami,et al.  Relationships between structure, permeability and glass transition temperature of oligodimethylsiloxanyl substituted polymers , 1990 .

[2]  Y. Yamashita,et al.  Effects of the Structure of p-Oligodimethylsiloxanyl Substituents of Polystyrene on Glass Transition Temperature and Oxygen Permeability of the Polymer , 1988 .

[3]  J. Hedrick,et al.  Synthesis and properties of segmented and block poly(hydroxyether-siloxane) copolymers , 1988 .

[4]  Y. Yamashita,et al.  Polynorbornenes with Oligodimethylsiloxanyl Substituents for Selectively Oxygen Permeable Membrane Material , 1988 .

[5]  B. J. Hardy,et al.  Structure-permeability relationships in silicone polymers , 1987 .

[6]  M. Kakimoto,et al.  Synthesis and Properties of Block Copolymers Based on Amine-Terminated Polydimethylsiloxane and Aromatic Polyamides , 1986 .

[7]  Y. Yamashita,et al.  The Role of p-Oligosiloxane Substituents of Polystyrene in Selective Oxygen Permeation through the Polymer Film , 1986 .

[8]  Y. Yamashita,et al.  Polymers with Oligoorganosiloxane Side Chains as Material for Oxygen Permeable Membranes , 1985 .

[9]  Y. Yamashita,et al.  Poly(p-disiloxane substituted styrene) as materials for oxygen permeable membranes , 1985 .

[10]  Y. Yamashita,et al.  Synthesis of silicone graft polymers and a study of their surface active properties , 1984 .

[11]  Y. Yamashita,et al.  Silicone Macromers for Graft Polymer Synthesis , 1982 .

[12]  William J. Ward,et al.  Ultrathin silicone/polycarbonate membranes for gas separation processes , 1976 .