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Synergistic Strengthening-Toughening Modification of Polypropylene with Functional Graphene/Halloysite Nanotubes |
Zhengjun WANG1,Hongcai LIU1,Yi GUO1,Jun BIAN1(),Jianbao LI1,Hailan LIN1(),Yun LU2 |
1. College of Materials Science and Engineering, Xihua University, Chengdu 610039, China 2. Department of Mechanical Engineering, Graduate School of Science and Engineering, Chiba University, Chiba 262-8522, Japan |
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Cite this article:
Zhengjun WANG,Hongcai LIU,Yi GUO,Jun BIAN,Jianbao LI,Hailan LIN,Yun LU. Synergistic Strengthening-Toughening Modification of Polypropylene with Functional Graphene/Halloysite Nanotubes. Chinese Journal of Materials Research, 2019, 33(7): 505-514.
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Abstract Nanocomposites of GO@HNTs/PP were prepared through melt blending method with polypropylene (PP) as matrix and hybrid nanofillers (GO@HNTs) composed of functionalized graphene oxide (GO) and halloysite nanotubes (HNTs) as filler. The structures and properties of the prepared hybrid nanofillers and PP nanocomposites were systematically investigated. Results show that there is chemical interactions between functionalized GO and HNTs, resulting in formation a "barrier effect" between them and inhibit the aggregation of the two species in the PP matrix. The tensile strength and impact strength of PP nanocomposites with 0.5% GO@HNTs hybrid nano-filler increased by 17.5% and 80.4%, respectively, compared with those of pure PP. Compared with the mechanical properties of composites prepared by adding the same content GO or HNTs alone, GO@HNTs hybrid nano-filler had obvious synergistic strengthening-toughening effect on the PP matrix. GO@HNTs/PP exhibited higher storage modulus, loss modulus and glass transitional temperatures than those of pure PP. The crystallization temperature, melting temperature, crystallinity and thermal decomposition temperature of PP nanocomposites are effectively increased due to the “heterogeneous nucleation effect” and “physical insulation effect” of GO@HNTs.
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Received: 19 November 2018
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Fund: Cooperation Project of Chunhui Plan of the Ministry of Education of China(Z2018088);Cooperation Project of Chunhui Plan of the Ministry of Education of China(Z2017070);Open Research Project of Comprehensive Health Promotion Center of Xihua University(DJKG2019-002);“Xihua Cup” Innovation and Entrepreneurship Project for College Students of Xihua University(2019051);the Comprehensive Reform and Practical Teaching Team Project of "Material Discipline" under Innovative and Entrepreneurial Environment(05050028) |
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