文献类型：期刊文献

英文题名：In situ grafting onto silica surface with epoxidized natural rubber via solid state method

作者：Xu, Haiyan[1]; Liu, Jiwen[2]; Fang, Liang[1]; Wu, Chifei[1,3]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Technol, Polymer Alloy Lab, Shanghai 200237, Peoples R China;[2]Ocean Univ Sci & Technol, Minist Educ, Key Lab Rubber Plast, Qingdao, Peoples R China

年份：2007

卷号：46

期号：4

起止页码：693

外文期刊名：JOURNAL OF MACROMOLECULAR SCIENCE PART B-PHYSICS

收录：;EI(收录号：20072710685088);WOS:【SCI-EXPANDED(收录号:WOS:000247729500005)】；

语种：英文

外文关键词：silica; epoxidized natural rubber; grafting; solid state; characterization; dynamic mechanical properties

摘要：An in situ solid state grafting reaction between epoxidized natural rubber (ENR) and silica was performed in a Haake internal mixer. Resulting ENR-grafted silica was characterized by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) measurements. Based on these results, it was concluded the silanol groups (Si-OH) of silica caused the ring opening of ENR oxirane rings so that ENR was grafted onto the silica surface. Transmission electron microscopy (TEM) photographs showed ENR-grafted silica had better dispersibility and smaller aggregates compared with the original silica. Dynamical mechanical analysis (DMA) of vulcanized rubber compounds contained ENR-grafted silica showed the glass transition temperature (Tg) of grafted ENR molecules shifted to higher temperature, from -3 degrees C to 20 degrees C, indicating the mobility of ENR was greatly restricted. As a result, the compounds containing ENR-grafted silica have higher hysteresis, and can be applied in a much wider field, such as damping materials, tires of racing cars, and so on.