Preparation and Morphology of Ring-Shaped Polystyrene-b lock-polyisoprenes

A Takano, O Kadoi, K Hirahara, S Kawahara…

Index: Takano, Atsushi; Kadoi, Osamu; Hirahara, Kazuhiro; Kawahara, Seiichi; Isono, Yoshinobu; Suzuki, Jiro; Matsushita, Yushu Macromolecules, 2003 , vol. 36, # 9 p. 3045 - 3050

Full Text: HTML

Citation Number: 63

Abstract

Three polystyrene-block-polyisoprene-block-polystyrenes (SIS) with different compositions were prepared and cyclized by the coupling reaction between two end groups on the same molecules. Ring-shaped polystyrene-block-polyisoprenes (SI) were isolated from the coupling products by GPC fractionation. They were ozonized in order to decompose the polyisoprene blocks selectively referring to the linear molecule. GPC analysis of the ...