利用化学氧化还原法制备出石墨烯。通过原位聚合法及溶液混合法制备出石墨烯/聚酰亚胺复合材料,考察不同复合材料制备方法对其机械性能及导电性能的影响,并对其作用机理进行探讨。结果表明,制备的石墨烯为二维的单层或寡层材料,加入到聚酰亚胺中能够增强其机械性能及电导率。相比溶液混合法,采用原位聚合法时石墨烯在聚酰亚胺基体中分散更均匀,对其团聚作用有更好的抑制作用,制备的复合材料性能更优异。采用该法加入石墨烯的量为1.0 wt%时,拉伸强度达到了132.5 MPa,提高了68.8%；加入量增加到3.0 wt%时,电导率达6.87×10-4S·m-1,提高了8个数量级,对聚酰亚胺的性能有显著的增强作用。
Reduced graphene oxide/polyimide ( rGO/PI) composites were prepared by the incorporation of the PI by in-situ poly-merization and solution blending methods. The influence of these methods on the mechanical and electrical properties of the compos-ites was investigated. Results indicate that the addition of the rGO to PI significantly changes its mechanical and electrical properties. The rGO is more homogeneously dispersed in the PI, its re-aggregation in the PI is significantly inhibited, and the tensile strength and electrical conductivity of the composites are higher for the in-situ polymerization method than the solution blending one. The tensile strength and electrical conductivity of the composite reach the highest values of 132. 5 MPa and 6. 87×10-4 S·m-1 with rGO additions of 1. 0 and 3. 0 wt%, respectively for the in-situ polymerization method, which are 68. 8% and 8 orders of magnitude higher than the corresponding values for pure PI.
参考文献
| [1] | Matthew J. Allen;Vincent C. Tung;Richard B. Kaner.Honeycomb Carbon: A Review of Graphene[J].Chemical Reviews,20101(1):132-145. |
| [2] | Liang Ya;Yue Bing Zheng;Feng Zhao.Chemistry and physics of a single atomic layer: strategies and challenges for functionalization of graphene and graphene-based materials[J].Chemical Society Reviews,20121(1):97-114. |
| [3] | Layek, R.K.;Nandi, A.K..A review on synthesis and properties of polymer functionalized graphene[J].Polymer: The International Journal for the Science and Technology of Polymers,201319(19):5087-5103. |
| [4] | Jun Lim;Dong Geun Shin;Hyeonuk Yeo;Munju Goh;Bon-Cheol Ku;Cheol-Min Yang;Dong Su Lee;Jun-Yeon Hwang;Byoungnam Park;Nam-Ho You.The Mechanical and Electrical Properties of Carbon Nanotube-Grafted Polyimide Nanocomposites[J].Journal of Polymer Science, Part B. Polymer Physics,201414(14):960-966. |
| [5] | Mengkai Li;Chunxiao Gao;Hongliang Hu.Electrical conductivity of thermally reduced graphene oxide/polymer composites with a segregated structure[J].Carbon: An International Journal Sponsored by the American Carbon Society,2013:371-373. |
| [6] | Stankovich S;Dikin DA;Dommett GHB;Kohlhaas KM;Zimney EJ;Stach EA;Piner RD;Nguyen ST;Ruoff RS.Graphene-based composite materials[J].Nature,20067100(7100):282-286. |
| [7] | Du, J.;Cheng, H.-M..The fabrication, properties, and uses of graphene/polymer composites[J].Macromolecular chemistry and physics,201210/11(10/11):1060-1077. |
| [8] | Rafiee, M.A.;Rafiee, J.;Wang, Z.;Song, H.;Yu, Z.-Z.;Koratkar, N..Enhanced mechanical properties of nanocomposites at low graphene content[J].ACS nano,200912(12):3884-3890. |
| [9] | M. Ayan-Varela;J.I. Paredes;S. Villar-Rodil.A quantitative analysis of the dispersion behavior of reduced graphene oxide in solvents[J].Carbon: An International Journal Sponsored by the American Carbon Society,2014:390-400. |
| [10] | Li, Yong-Feng;Liu, Yan-Zhen;Zhang, Wei-Ke;Guo, Chun-Yao;Chen, Cheng-Meng.Green synthesis of reduced graphene oxide paper using Zn powder for supercapacitors[J].Materials Letters,2015Oct.15(Oct.15):273-276. |
| [11] | Ming Fang;Kaigang Wang;Hongbin Lu.Covalent polymer functionalization of graphene nanosheets and mechanical properties of composites[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,200938(38):7098-7105. |
| [12] | Kuila, T.;Khanra, P.;Mishra, A.K.;Kim, N.H.;Lee, J.H..Functionalized-graphene/ethylene vinyl acetate co-polymer composites for improved mechanical and thermal properties[J].Polymer Testing,20122(2):282-289. |
| [13] | Bin Shen;Wentao Zhai;Mimi Tao;Dingding Lu;Wenge Zheng.Chemical functionalization of graphene oxide toward the tailoring of the interface in polymer composites[J].Composites science and technology,2013Mar.(Mar.):87-94. |
| [14] | Li, Jinhui;Zhang, Guoping;Deng, Libo;Zhao, Songfang;Gao, Yongju;Jiang, Kun;Sun, Rong;Wong, Chingping.In situ polymerization of mechanically reinforced, thermally healable graphene oxide/polyurethane composites based on Diels-Alder chemistry[J].Journal of Materials Chemistry, A. Materials for energy and sustainability,201448(48):20642-20649. |
| [15] | Kim, H.;Kobayashi, S.;Abdurrahim, M.A.;Zhang, M.J.;Khusainova, A.;Hillmyer, M.A.;Abdala, A.A.;MacOsko, C.W..Graphene/polyethylene nanocomposites: Effect of polyethylene functionalization and blending methods[J].Polymer: The International Journal for the Science and Technology of Polymers,20118(8):1837-1846. |
| [16] | Chenlu Bao;Lei Song;Weiyi Xing.Preparation of graphene by pressurized oxidation and multiplex reduction and its polymer nanocomposites by masterbatch-based melt blending[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,201213(13):6088-6096. |
| [17] | Li D;Muller MB;Gilje S;Kaner RB;Wallace GG.Processable aqueous dispersions of graphene nanosheets[J].Nature nanotechnology,20082(2):101-105. |
| [18] | Sajini VadukumpullyDepartment of Chemistry, National University of Singapore, 3 Science Driue 3, Singapore 117543, Singapore;Jinu PaulDepartment of Chemistry, National University of Singapore, 3 Science Driue 3, Singapore 117543, Singapore;Narahari Mahanta.Flexible conductive graphene/poly(vinyl chloride) composite thin films with high mechanical strength and thermal stability[J].Carbon: An International Journal Sponsored by the American Carbon Society,20111(1):198-205. |
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