The Impact of Nano CaCO3 Modified in situ with Methacrylic Acid on the Structure and Properties of Natural Rubber
文献类型： 外文期刊
作者： Zeng, Zongqiang 1 ; Li, Yongzhen 1 ; Wang, Chao 1 ; Zhao, Pengfei 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Key Lab Trop Crops Proc, Chinese Agr Minist, Zhanjiang 524001, Peoples R China
2.Chinese Acad Trop Agr Sci, Rubber Res Inst, Haikou 571101, Hainan, Peoples R China
关键词： natural rubber; nano CaCO3; nano composites; in situ modification
期刊名称：JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION （ 影响因子：0.957； 五年影响因子：0.959 ）
ISSN： 1000-2413
年卷期： 2020 年 35 卷 6 期
页码：
收录情况： SCI
摘要： Natural rubber (NR) was reinforced in situ with nano CaCO3 that had been modified with methacrylic acid (MAA)(M-CaCO3). The structures and properties of the resulting composites were studied using attenuated total reflection Fourier transform infrared spectroscopy(ATR-FTIR), scanning electron microscopy(SEM), and Mooney viscometer and mechanical tests. The results show that when NR is physically blended with CaCO3 and MAA, (Ca2+)-(-OOC) is formed in situ. When dicumyl peroxide (DCP) is added, the (Ca2+)-(-OOC) self-homopolymerizes, and during the curing process poly-(Ca-2+)-(-OOC) is formed and grafts to the molecular chains of the NR via carbon-carbon double bonds. The NR/M-CaCO3 composites formed have close interfacial interaction and are well dispersed. Compared with the NR composites reinforced with unmodified nano CaCO3, the NR/M-CaCO3 composites have very different cure characteristics, rheological behavior, and mechanical properties, and these characteristics and properties show a significant relationship with the loading of M-CaCO3.
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