Chemical Research in Chinese Universities ›› 2005, Vol. 21 ›› Issue (5): 615-618.

• Articles • Previous Articles     Next Articles

Synthesis of Poly(styrene-b-isoprene-b-styrene) via Nitroxide-mediated Radical Polymerization by a Novel Alkoxyamine

GAO Long-cheng, PAN Qi-wei, FAN Xing-he, CHEN Xiao-fang, WAN Xin-hua, ZHOU Qi-feng   

  1. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China;Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Beijing 100871, P.R. China
  • Received:2005-03-28 Online:2005-09-23 Published:2011-08-06
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20134010) and the Science Research Fund of the Ministry of Education of P.R.China(No.104005).

Abstract: Bifunctional alkoxyamine bis-TIPNO derived from 2,2,5-trimethyl-4-phenyl-3-azahexane-3-oxyl(TIPNO) and α, ω-alkyl bromide by atom transfer radical addition(ATRA) was employed as "biradical initiator" for nitroxide-mediated radical polymerization(NMRP) of isoprene and styrene. The kinetics study for the polymerization of styrene at different time showed living features. The poly(styrene-b-isoprene-b-styrene)(SIS) copolymers have two glass transition temperatures, indicating the immiscibility of the corresponding blocks.

Key words: Radical polymerization, Block copolymer, Nitroxide, Isoprene