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标题:Interfacial enhancement of maleated polypropylene/silica composites using graphene oxide
时间:2020-03-26 23:27:08
DOI:10.1002/app.36224
作者:Feng Luo;Li Chen;Nanying Ning
关键词:Experimental/ adhesion; crystal microstructure; disperse systems; filled polymers; Fourier transform spectra; graphene; hydrogen bonds; infrared spectra; optical microscopy; particle reinforced composites; polymer blends; scanning electron microscopy; silicon compounds; tensile strength; tensile testing; thermal analysis; transmission electron microscopy/ maleated polypropylene-silica composites; ultrathin-negatively-charged graphene oxide sheets; oxidation; natural graphite; polymer blends; polymer composites; core-shell structured hybrid submicroparticles; electrostatic assembly; positively charged amino-modified silica; hybrid filler; microstructure; SEM; TEM; optical microscopy; TGA; Fourier transform infrared spectra; dynamic mechanical analysis; uniform dispersions; interfacial adhesion; mechanical property; hydrogen bonding; tensile testing; tensile strength; SiO 2-CO / A8140L Deformation, plasticity and creep A6220F Deformation and plasticity A8170 Materials testing A8270 Disperse systems A7830 Infrar
出版源: 《Journal of Applied Polymer Science》 ,125 (S1) :0-0
摘要:Graphene oxide (GO) is derived from oxidization of natural graphite and contains many active groups. These active groups make GO a potential compatibilizer for polymer blends or coupling agent for polymer composites. In this work, a novel core-shell structured hybrid submicroparticles of graphene oxide-encapsulated silica (GO-SiO 2) were fabricated using GO sheets via an electrostatic assembly between ultrathin negatively charged graphene oxide sheets and positively charged amino-modified silica. The possible application of this new hybrid filler was explored in preparation of maleated polypropylene (PP- g-MA)/GO-SiO 2 composites. The microstructure and interface enhancement of the prepared composites were analyzed by SEM, TEM, OM, TGA, FTIR, and DMA measurements. A uniform dispersion of GO-SiO 2 hybrids, enhanced interfacial adhesion and improved mechanical property were evidenced. The reason might be that graphene oxide can be covalently assembled onto the amino-modified silica surface, and simultaneously it provides strong interaction with the PP- g-MA due to similar polarity or possible hydrogen bonding. This work suggests a potential application of graphene oxide-encapsulated particle in preparation of high performance polymer composites. copy 2012 Wiley Periodicals, Inc.
大小:1975 kb
页数:11 PAGES
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