Effect of Reactive Extrusion Processing of Block Copolymerization on the Molecular Construction and Properties of the Copolymers
Nowadays, all the industrialized polyolefin block copolymers (SBS, SIS, K-resin etc) products are synthesized via anionic solution polymerization, In such type of polymerization, the reactant mixture and heat transfer could be easily processed. However, this method also encounters some insurmountable problems, such as high energy consumption and environmental pollution due to the using and retrieving the solvents, which are 5 to 6 times of the products itself by weight. In order to eliminate the use of solvents, a novel approach, reactive extrusion, has been developed to prepare polyolefin block copolymers in our group. In this work, a novel multi-block copolymer of styrene (S) and diene (D) (butadiene or isoprene ) synthesized by one step bulk polymerization, using a closely intermeshing twin-screw extruder (φ 35 nun and L/D 56) as the reactor, S/D mixture as the monomer and organic lithium as the initiator, was reported.
Anna Zheng Yingjian Zhou Yong Guan Fuzeng Hu Kai Zhang Gang Sun
Materials School of Science and Engineering,East China University of Science and Technology,Shanghai 200237,China
国际会议
5th East-Asian Polymer Conference(第5届东亚高分子学术研讨会)
上海
英文
183-184
2008-06-03（万方平台首次上网日期，不代表论文的发表时间）