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Polymer Bulletin
Published in: Polymer Bulletin 2/2016

27-08-2015 | Original Paper

Synthesis and characterization of random styrene–butadiene copolymer with Nd-based catalyst

Authors: Tingting Li, Yang Li, Gongqiang He, Zhenghai Shi, Yanming Hu, Fang Guo, Yurong Wang, Kaihua Shen, Zhiyong Wei, Hongwei Ma, Yuan Cheng, Yanshai Wang

Published in: Polymer Bulletin | Issue 2/2016

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Abstract

Random styrene (St)–butadiene (Bd) copolymer (SBR) was obtained with the catalyst system composed of Nd(P507)3, methylaluminoxane (MAO) and indene. This Nd-based catalyst system showed high activity and selectivity toward the copolymerization. Indene was proven to be the critical component to achieve the high content of St units (~33.0 %). Raising the polymerization temperature was beneficial to enhance the coordination of St to the active center, affording the increased yield and number-average molecular weight (M n ) of SBR. The polymers obtained in aliphatic solvents possessed higher M n than M n of SBR generated in toluene. The composition of SBR was controllable by adjusting the feed ratio of St/Bd. NMR and DSC analysis illustrated that the copolymers sustained random distribution even when St incorporation in SBR was up to 33.0 %. SBR was fully characterized by NMR, FTIR, GPC and DSC analysis.
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Metadata
Title
Synthesis and characterization of random styrene–butadiene copolymer with Nd-based catalyst
Authors
Tingting Li
Yang Li
Gongqiang He
Zhenghai Shi
Yanming Hu
Fang Guo
Yurong Wang
Kaihua Shen
Zhiyong Wei
Hongwei Ma
Yuan Cheng
Yanshai Wang
Publication date
27-08-2015
Publisher
Springer Berlin Heidelberg
Published in
Polymer Bulletin / Issue 2/2016
Print ISSN: 0170-0839
Electronic ISSN: 1436-2449
DOI
https://doi.org/10.1007/s00289-015-1503-4

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