| 不同微观结构聚丁二烯橡胶的自由基接枝反应 |
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| 引用本文： | 徐林,张春庆,王雪.不同微观结构聚丁二烯橡胶的自由基接枝反应[J].合成橡胶工业,2021,0(2):87-92. |
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| 作者姓名： | 徐林 张春庆 王雪 |
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| 作者单位： | 1. 中国石化北京北化院燕山分院 橡塑新型材料合成国家工程研究中心，北京102500；2. 大连理工大学 化工学院，辽宁 大连116024 |
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| 基金项目： | 中国石油化工股份有限公司项目(217001)。 |
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| 摘 要： | 以过氧化苯甲酰(BPO)为引发剂,2,2,6,6-四甲基哌啶-1-氧基自由基(TEMPO)为自由基捕捉剂,进行3种低相对分子质量模型聚丁二烯,即高乙烯基聚丁二烯橡胶(HVPB)、高反式聚丁二烯橡胶(HTPB)及高顺式聚丁二烯橡胶(HCPB)的自由基接枝反应,并利用傅里叶变换红外光谱和核磁共振氢谱对模型聚丁二烯接枝产物的...
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| 关 键 词： | 聚丁二烯橡胶 微观结构 自由基 接枝反应 反应机理 |
Radical grafting reaction of polybutadiene rubber with different microstructure |
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| XU Lin,ZHANG Chun-qing,WANG Xue.Radical grafting reaction of polybutadiene rubber with different microstructure[J].China Synthetic Rubber Industry,2021,0(2):87-92. |
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| Authors: | XU Lin ZHANG Chun-qing WANG Xue |
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| Affiliation: | (National Engineering Research Center for Synthesis of Novel Rubber and Plastic Materials,Yanshan Branch of Beijing Research Institute of Chemical Industry,SINOPEC,Beijing 102500,China;School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The radical grafting reaction of three kinds of low relative molecular mass model polybutadiene(PB), high 1,2-polybutadiene(HVPB), high trans-1,4-polybutadiene(HTPB) and high cis-1,4-polybutadiene(HCPB), was carried out using benzoyl peroxide(BPO) as radical initiator and 2,2,6,6-tetramethylpiperidine-1-oxyl(TEMPO) as radical trapper. The content of microstructure, BPO residue and TEMPO of grafted PB products were characterized by Fourier transform infrared spectroscopy and proton nuclear magnetic resonance. The results showed that the abstracting hydrogen reaction dominated the radical grafting reaction of PB at the initial stage and the radical addition reaction became stronger as the increase of reaction time. The raise order of addition reaction from high to low was HCPB, HVPB and HTPB. The 1,2-unit of PB was conducive to the abstracting hydrogen reaction, while the cis-1,4-unit of PB tended to undergo the radical addition reaction. |
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| Keywords: | polybutadiene rubber microstructure radical grafting reaction reaction mechanism |
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