The processing capability is vital for the wide appli-cations of materials to forge structures as-demand.Graphene-based macroscopic materials have shown excellent mechanical and func-tional properties.However,different from usual polymers and met-als,graphene solids exhibit limited deformability and processibility for precise forming.Here,we present a precise thermoplastic forming of graphene materials by polymer intercalation from graphene oxide(GO) precursor.The intercalated polymer enables the thermoplastic-ity of GO solids by thermally activated motion of polymer chains.We detect a critical minimum containing of intercalated polymer that can expand the interlayer spacing exceeding 1.4 nm to activate thermoplasticity,which becomes the criteria for thermal plastic forming of GO solids.By thermoplastic forming,the flat GO-composite films are forged to Gaussian curved shapes and imprinted to have surface relief patterns with size precision down to 360 nm.The plastic-formed structures maintain the structural integration with outstanding electrical(3.07 × 105 S m-1) and thermal conductivity (745.65 W m-1 K-1) after removal of polymers.The thermoplastic strategy greatly extends the forming capability of GO materials and other layered materials and promises versatile structural designs for more broad applications.

Zeshen Li;Fan Guo;Kai Pang;Jiahao Lin;Qiang Gao;Yance Chen;Dan Chang;Ya Wang;Senping Liu;Yi Han;Yingjun Liu;Zhen Xu;Chao Gao

MOE Key Laboratory of Macromolecular Synthesis and Functionalization,Department of Polymer Science and Engineering,Key Laboratory of Adsorption and Separation Materials & Technologies of Zhejiang Province,Zhejiang University,38 Zheda Road,Hangzhou 310027,People's Republic of China;National Special Superfine Powder Engineering Research Center,Nanjing University of Science and Technology,1 Guanghua Road,Nanjing 210094,People's Republic of China;School of Mechanical Engineering,Southeast University,Nanjing 211189,People's Republic of China;Hangzhou Gaoxi Technology Co.Ltd,Yuhang District,Liangzhu 311113,People's Republic of China

纳微快报（英文）

[1]Zeshen Li;Fan Guo;Kai Pang;Jiahao Lin;Qiang Gao;Yance Chen;Dan Chang;Ya Wang;Senping Liu;Yi Han;Yingjun Liu;Zhen Xu;Chao Gao-.Precise Thermoplastic Processing of Graphene Oxide Layered Solid by Polymer Intercalation)[J].纳微快报（英文）,2022(01):226-238

thermoplasticity

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