Highly thermal conductive composites with polyamide-6 covalently-grafted graphene by an in situ polymerization and thermal reduction process |
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| Affiliation: | 1. School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318001, PR China;2. Department of Materials, College of Engineering, Zhejiang Agriculture & Forestry University, Hangzhou 311300, PR China;3. State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology, Zhejiang University of Technology, Hangzhou 310014, PR China;1. Department of Environment and Chemical Engineering, Dalian University, Dalian 116622, Liaoning, People’s Republic of China;2. College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, Sichuan, People’s Republic of China |
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| Abstract: | The thermal conductive polyamide-6/graphene (PG) composite is synthesized by in situ ring-opening polymerization reaction using ε-caprolactam as the monomer, 6-aminocaproic acid as the initiator and reduced graphene oxide (RGO) as the thermal conductive filler. The generated polyamide-6 (PA6) chains are covalently grafted onto graphene oxide (GO) sheets through the “grafting to” strategy with the simultaneous thermal reduction reaction from GO to RGO. The homogeneous dispersion of RGO sheets in PG composite favors the formation of the consecutive thermal conductive paths or networks at a relatively low GO sheets loading, which improves the thermal conductivity (λ) from 0.196 W m?1 K?1 of neat PA6 to 0.416 W m?1 K?1 of PG composite with only 10 wt% GO sheets loading. |
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