新材料与新技术

功能化氧化石墨烯/聚苯乙烯复合材料的制备及性能研究

展开
  • 中国石化上海石油化工研究院绿色化工与工业催化国家重点实验室,上海201208
金铭(1989-),女,博士后,主要从事石墨烯复合材料研究工作。

网络出版日期: 2020-10-20

基金资助

国家重点研发计划(2017YFB0702800)

Preparation and property of functionalized GO/PS composite

Expand
  • State Key Laboratory of Green Chemical Engineering and Industrial Catalysis, Shanghai Research Institute of Petrochemical Technology,SINOPEC,Shanghai 201208

Online published: 2020-10-20

摘要

采用共价接枝法对氧化石墨烯进行化学修饰得到功能化氧化石墨烯,以其作为增强填料,通过溶液插层法制备了功能化氧化石墨烯/聚苯乙烯复合材料,利用扫描电子显微镜、傅里叶变换红外光谱仪、热重分析仪、X射线光电子能谱仪等分析手段进行了测试表征。结果表明:共价接枝在氧化石墨烯表面的有机功能基团含量达到了7%(质量分数);经过功能化修饰的氧化石墨烯可以较好地分散在乙醇、N,N-二甲基甲酰胺、N-甲基吡咯烷酮、二氯甲烷、苯乙烯等有机溶剂中,其中在乙醇中的分散浓度高达5mg/mL。功能化氧化石墨烯良好的分散性可以提高与聚苯乙烯基体的界面结合强度,从而有效抑制聚苯乙烯分子链段的运动,增强复合材料的耐热稳定性。功能化氧化石墨烯添加量为2.0%(质量分数)时,复合材料外推起始分解温度、玻璃化转变温度分别提高51.7℃和10.8℃。

本文引用格式

金铭, 何文军, 杨为民 . 功能化氧化石墨烯/聚苯乙烯复合材料的制备及性能研究[J]. 化工新型材料, 2020 , 48(10) : 64 -68 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.10.014

Abstract

A covalent grafting method was adopted to modify graphene oxide (GO).The grafted organic molecules onto GO surfaces were confirmed by using SEM,FT-IR,XPS,TG and showed grafted content of ~7wt%.The resultant functionalized GO sheets (FGO) possessed well dispersion capability in many organic solvents,such as ethanol,DMF,NMP,dichloromethane,styrene and so on,in which the concentration of FGO in ethanol could reach up to 5mg/mL.Moreover,the FGO was utilized as functional nano filler to prepare GO/PS nanocomposites through solution intercalation.The good dispersion of FGO in the matrix could effectively improve the thermal properties of the nanocomposites.The temperature of the extrapolated onset of the nanocomposites increased by 51.7℃ and the glass transition temperature increased by 10.8℃ with loading of 2.0wt% FGO.

参考文献

[1] 李佩华, 胡涛, 罗晶瑾, 等.聚苯乙烯的机械性能与耐热性改性研究进展[J].高分子通报, 2018(7):28-41.
[2] 董艳杰, 张慧波, 陈碧芬.聚苯乙烯及其改性材料的力学性能研究进展[J].塑料工业, 2018, 46(9):14-17.
[3] 周强, 蔺海兰, 何飞雄, 等.聚苯乙烯/石墨烯纳米复合材料研究进展[J].中国塑料, 2014, 28(9):6-11.
[4] Meyer J C, Geim A K, Katsnelson M I, et al.The structure of suspended graphene sheets[J].Nature, 2007, 446:60.
[5] Lee C, Wei X, Kysar J W, et al.Measurement of the elastic properties and intrinsic strength of monolayer graphene[J].Science, 2008, 321(5887):385-388.
[6] Kim H, Abdala A A, Macosko C W.Graphene/polymer nanocomposites[J].Macromolecules, 2010, 43(16):6515-6530.
[7] Sengupta R, Bhattacharya M, Bandyopadhyay S, et al.A review on the mechanical and electrical properties of graphite and modified graphite reinforced polymer composites[J].Progress in Polymer Science, 2011, 36(5):638-670.
[8] Zhang Y, Liu L, Sun B, et al.Preparation of lipophilic graphene oxide derivates via a concise route and its mechanical reinforcement in thermoplastic polyurethane[J].Composites Science and Technology, 2016, 134:36-42.
[9] Stankovich S, Dikin D A, Dommett G H B, et al.Graphene-based composite materials[J].Nature, 2006, 442:282.
[10] Stankovich S, Piner R D, Nguyen S T, et al.Synthesis and exfoliation of isocyanate-treated graphene oxide nanoplatelets[J].Carbon, 2006, 44(15):3342-3347.
[11] Hu H, Wang X, Wang J, et al.Preparation and properties of graphene nanosheets-polystyrene nanocomposites via in situ emulsion polymerization[J].Chemical Physics Letters, 2010, 484(4):247-253.
[12] Fang M, Wang K, Lu H, et al.Single-layer graphene nanosheets with controlled grafting of polymer chains[J].Journal of Materials Chemistry, 2010, 20(10):1982-1992.
[13] Li Y, Yu F, He W, et al.The preparation and catalytic performance of graphene-reinforced ion-exchange resins[J].RSC Advances, 2015, 5(4):2550-2561.
[14] 金铭, 何文军, 李亚男, 等.氧化石墨烯/聚苯乙烯复合微球的制备及热性能[J].高分子材料科学与工程, 2018, 34(7):1-6.
[15] Ramanathan T, Abdala A A, Stankovich S, et al.Functionalized graphene sheets for polymer nanocomposites[J].Nature Nanotechnology, 2008, 3:327.
Options
文章导航

/