环化丁苯橡胶的表征
王朝阳 黄学品 杨继华
摘要:在SBR中加入环化试剂AlEt2Cl-C6H5CH2Cl,在120℃,20min条件下制备了环化SBR,并
借助IR,1H-NMR,DSC,GPC等方法对产物性能进行了表征。结果表明,二甲苯溶剂参
与了环化反应,且随环化度增加,参与反应的二甲苯量也逐渐增加,并确定了环结构的
形成。利用1H-NMR谱图导出了环化SBR的环化度和溶剂参与量的计算公式。
关键词:丁苯橡胶;环化丁苯橡胶;环化反应;溶剂;表征
中图分类号:TQ333.1文献标识码:A
文章编号:1000-1255(2000)04-0216-03
Characterization of cyclized SBR
Wang Chaoyang and Huang Xuepin
(Research Institute of Materials Science, South China University of Technology,
Guangzhou, Guangdong 510641)
Yang Jihua
(Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun,Jilin
130022)
Abstract: SBR was cyclized with the aid of cationic catalyst system
based on AlEt2Cl- C6H5CH2Cl in xylene solution at 120 ℃ . The products were
characterized by IR,1H- NMR, DSC, GPC and the polycyclic structure was determined. The
results showed that the solvent xylene incorporated in polymer chains and increased with
the increase of the degree of cyclization.The degree of cyclization and the incorporated
solvent content were estimated by 1H- NMR method.
Keywords: styrene- butadiene rubber;cyclized styrene- butadiene
rubber;cyclization;solvent; characterization
基金项目:国家自然科学基金资助项目(29574179)。
作者简介:王朝阳,27岁,博士研究生。已发表论文5篇。
王朝阳(华南理工大学材料研究所,广东广州510641)
黄学品(华南理工大学材料研究所,广东广州510641)
杨继华(国科学院长春应用化学研究所,吉林长春130022)
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收稿日期:1999-09-23
修订日期:2000-03-13 |