文献类型：期刊文献

英文题名：Preparation of poly(methyl methacrylate-co-butyl methacrylate) nanoparticles and their reinforcing effect on natural rubber

作者：Liu, Jin[1];Tian, Xiaohui[1];Sun, Jinyu[1];Yuan, Yizhong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2016

卷号：133

期号：35

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20162302471282);WOS:【SCI-EXPANDED(收录号:WOS:000379693800006)】；

基金：This work was supported by Fundamental Research Funds for the Central Universities (22A201514002).

语种：英文

外文关键词：composites; mechanical properties; morphology; rubber

摘要：Poly(methyl methacrylate-co-butyl methacrylate) [P(MMA-co-BMA)] nanoparticles were synthesized via emulsion polymerization, and incorporated into natural rubber (NR) by latex compounding. Monodispersed, core-shell P(MMA-co-BMA)/casein nanoparticles (abbreviated as PMBMA-CA) were produced with casein (CA) as surfactant. The chemical structure of P(MMA-co-BMA) copolymers were confirmed by H-1-NMR and FTIR analyses. Transmission electron microscopy demonstrated the core-shell structure of PMBMA-CA, and PMBMA-CA homogenously distributed around NR particles, indicating the interaction between PMBMA-CA and NR. As a result, the tensile strength and modulus of NR/PMBMA-CA films were significantly enhanced. The tensile strength was increased by 100% with 10% copolymer addition, when the molar ratio of MMA: BMA was 8: 2. In addition, scanning electron microscopy and atomic force microscopy results presented that the NR/PMBMA-CA films exhibited smooth surfaces with low roughness, and PMBMA-CA was compatible with NR. FTIR-ATR analyses also suggested fewer PMBMA-CA nanoparticles migrated out of NR. (C) 2016 Wiley Periodicals, Inc.