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| Structure and Properties of PA6/GO Nanocomposite by In-situ Polymerization |
Huan HUANG1,Yuzhe CHEN1,Yi GUO1,Hailan LIN1,Lijun WANG1,Sude MA1,Jun BIAN1( ),Zhijie GU2 |
1. College of Materials Science and Engineering, Xihua University, Chengdu 610039, China
2. Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo, 184-8588, Japan |
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Cite this article:
Huan HUANG,Yuzhe CHEN,Yi GUO,Hailan LIN,Lijun WANG,Sude MA,Jun BIAN,Zhijie GU. Structure and Properties of PA6/GO Nanocomposite by In-situ Polymerization. Chinese Journal of Materials Research, 2019, 33(8): 621-628.
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Abstract Graphene oxide (GO) modified polyamide 6 nanocomposites (PA6/GO) were prepared by in-situ ring-opening polymerization with caprolactam (CL) and 6-aminocaproic acid (ACA) were used as polymerization monomers and GO as nano-filler. The structure and morphology of PA6/GO nanocomposites were characterized. The results shows that GO was uniformly dispersed in the PA6 matrix. The viscosity average molecular mass of PA6 reached 104 orders of magnitude, but the excessive addition of GO would decrease the molecular mass of synthesized PA6. The addition of GO induced the transformation of crystallographic structure of the PA6 matrix from α-type to γ-type. At the same time, as a heterogeneous nucleating agent, GO promotes the crystallization of PA6 matrix in PA6/GO composites, and increases the crystallinity of PA6/GO composites.. Tensile strength of PA6/GO composites increased first and then decreased with the addition of GO. When the amount of GO was 0.4% (in mass fraction), the tensile strength of PA6/GO nanocomposites reached a maximum of 61.72 MPa, which was superior to that of pure PA6 (48.52 MPa) by 27.21%. When the GO content was 1.0% the thermal conductivity of PA6/GO nanocomposites reached 0.317 W/(m·K) and 0.280 W/(m·K) at 50℃ and 100℃, which were 33.19% and 33.23% higher than that of pure PA6, respectively.
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Received: 10 December 2018
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| Fund: Supported by Cooperation Project of Chunhui Plan of the Ministry of Education of China(Nos. Z2018088);Supported by Cooperation Project of Chunhui Plan of the Ministry of Education of China(Nos. Z2017070);Open Research Project of Comprehensive Health Promotion Center of Xihua University(No. DJKG2019-002);National Innovation and Entrepreneurship Training Program for College Students(Nos. 201910623XXX);National Innovation and Entrepreneurship Training Program for College Students(Nos. 201810623007);Program of Youth Scientific and Technological Innovation Research Team(No. 2019JDTD0024) |
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