中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Highly Regio- and Stereoselective Terpolymerization of Styrene, Isoprene and Butadiene with Lutetium-Based Coordination Catalyst

文献类型:期刊论文

作者Jian, Zhongbao1,2; Tang, Shijia3; Cui, Dongmei1
刊名MACROMOLECULES
出版日期2011-10-11
卷号44期号:19页码:7675-7681
ISSN号0024-9297
DOI10.1021/ma2016198
英文摘要By using the cationic lutetium allyl species (C(5)Me(4)-C(5)H(4)N)Lu(eta(3)-C(3)H(5))(2) (1)/[Ph(3)C] [B(C(6)F(5))(4)], the copolymerization of isoprene (IP) with styrene (St) could be achieved in a full range of monomer feed ratios (10 mol %-90 mol %). The (13)C NMR and DSC analyses, and the competitive polymerization ratios (r(St) = 3.1 vs r(IP) = 23.9) clearly revealed that the obtained IP-St copolymers were multiblocked microstructure with high cis-1,4-polyisoprene (PIP) units (80%) and crystalline syndiotactic polystyrene (sPS) sequences, which was in contrast to the copolymerization behavior of butadiene (BD) and St with the same system that afforded only diblock copolymer. Strikingly, the terpolymerization of St with IP and BD via coordination Mechansim was realized for the first time with high conversions (74-85%) and high activities (111-144 kg (mol(Lu)h)(-1)): The (13)C NMR spectroscopic analysis indicated that the resultant terpolymers were composed of perfect sPS blocks, high cis-1,4-PIP units (77.7%) and almost pure cis-1,4-polybutadiene (PBD) sequences (97.5%) arranged in multiblocked mode. The insertion rate of styrene monomer in the terpolymer could be tuned swiftly by changing its feed ratio. DSC curves suggested that these multiblock terpolymers had continuously variable but single T(g) and (or) T(m) values, which was different from the triblock IP BD St terpolymer having two distinct Tg values (-105 and -57 degrees C) and one high T(m) value (265 degrees C). Such novel terpolymers could not be accessed by any other methods known to date.
语种英语
WOS记录号WOS:000295487600022
出版者AMER CHEMICAL SOC
源URL[http://ir.iccas.ac.cn/handle/121111/72473]  
专题中国科学院化学研究所
通讯作者Cui, Dongmei
作者单位1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Jilin Univ, Coll Chem, Changchun 130012, Peoples R China
推荐引用方式
GB/T 7714
Jian, Zhongbao,Tang, Shijia,Cui, Dongmei. Highly Regio- and Stereoselective Terpolymerization of Styrene, Isoprene and Butadiene with Lutetium-Based Coordination Catalyst[J]. MACROMOLECULES,2011,44(19):7675-7681.
APA Jian, Zhongbao,Tang, Shijia,&Cui, Dongmei.(2011).Highly Regio- and Stereoselective Terpolymerization of Styrene, Isoprene and Butadiene with Lutetium-Based Coordination Catalyst.MACROMOLECULES,44(19),7675-7681.
MLA Jian, Zhongbao,et al."Highly Regio- and Stereoselective Terpolymerization of Styrene, Isoprene and Butadiene with Lutetium-Based Coordination Catalyst".MACROMOLECULES 44.19(2011):7675-7681.

入库方式: OAI收割

来源:化学研究所

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