Preparation and characterization of natural rubber/silica nanocomposites using rule of similarity in latex
文献类型: 外文期刊
第一作者: Luo Yongyue
作者: Luo Yongyue;Feng Chunfang;Yi Zhifeng;Qiu Quanfang;Peng Zheng;Feng Chunfang;Yi Zhifeng;Lx, Kong;Wang Qinghuang
作者机构:
关键词: natural rubber;silica;nanocomposite;latex compounding;rule of similarity
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: 2013 年 28 卷 5 期
页码:
收录情况: SCI
摘要: Rule of similarity and latex compounding techniques were combined for the first time to prepare natural rubber/nanosilica (NR/SiO2) nanocomposite with core-shell nanosilica-poly (methyl methacrylate) (SiO2-PMMA) particles and PMMA-modified natural rubber matrix (NR-PMMA). The microstructure of SiO2 and nanocomposites with different SiO2 contents was characterized by fourier transform infrared spectroscopy (FTIR); the morphology of nanocomposites was investigated with scanning electron microscopy (SEM); the tensile strength was characterized by tensile testing machine and the thermal stability of composites was studied by thermal gravimetric analysis. Results showed that PMMA chains have successfully grafted onto the surface of SiO2, and the core-shell SiO2-PMMA nanoparticles and NR-PMMA latex have been perfectly incorporated. SiO2-PMMA nanoparticles are evenly distributed over the NR matrix with an average size in the range of 60-100 nm at the low content (SiO(2)a parts per thousand currency sign 3 wt%), while aggregations are apparently observed when 5 wt% SiO2 is loaded. In addition, NR/SiO2 composities possess a considerable improvement in ageing resistance compared with the pure NR. The tensile strength of composite increases from 6.99 to 12.72 MPa, reaching the highest value at a 0.5 wt% SiO2 loading, and then the figure decreases gradually because of the aggregation of SiO2 nanoparticles. It is anticipated that the reported process is to provide a simple and economic way for preparing NR composites.
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