Volume 35, Issue 7 pp. 1927-1935
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Synthesis and properties of elastomeric ionenes I. Polybutadiene ionenes

Shinzo Yamashita

Shinzo Yamashita

Department of Industrial Chemistry, Faculty of Engineering and Design, Kyoto Institute of Technology, Kyoto 606, Japan

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Masaaki Itoi

Masaaki Itoi

Department of Industrial Chemistry, Faculty of Engineering and Design, Kyoto Institute of Technology, Kyoto 606, Japan

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Shinzo Kohjiya

Shinzo Kohjiya

Department of Industrial Chemistry, Faculty of Engineering and Design, Kyoto Institute of Technology, Kyoto 606, Japan

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Akinori Kidera

Akinori Kidera

Department of Industrial Chemistry, Faculty of Engineering and Design, Kyoto Institute of Technology, Kyoto 606, Japan

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First published: 20 May 1988
Citations: 6

Abstract

Polybutadiene ionene (PBI) carrying quaternary ammonium ions in the main chain was synthesized from dimethylamino-terminated polybutadiene and 1,4-dibromobutane. Dimethylamino-terminated polybutadiene was prepared by the reaction of isocyanate-terminated polybutadiene with 2-dimethylaminoethanol. The swelling property and the mechanical properties of PBI were compared with those of polybutadiene urethane (PBU), which was prepared by the reaction of hydroxy-terminated polybutadiene with a diisocyanate. The following points were found: (1) PBI shows almost the same solubility parameter δp as that of PBU; (2) PBI attains a four time greater tensile strength at break than PBU at room temperature; (3) PBI shows a thermoplastic behavior.

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