以氧化石墨为前驱体,采用真空热膨胀还原法获得了功能化的石墨烯材料.以石墨烯为纳米填料,采用静电纺丝法制备了一系列石墨烯改性聚丙烯腈(PAN)纳米复合纤维,经进一步预氧化和炭化得到纳米炭纤维.使用扫描电镜(SEM)、X射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)、元素分析(EA)、热重(TGA)和差示扫描量热仪(DSC)研究了石墨烯对纳米炭纤维的宏观性能与微观结构的影响.结果表明,加入石墨烯后,PAN纳米纤维中分子取向变大,结晶度下降.对氧化、环化和脱氢反应可产生一定的抑制作用,导致预氧化反应程度下降.同时,石墨烯可作为炭化阶段微晶生长的晶核,有利于碳网平面的快速生长.
参考文献
| [1] | Darren J. Browning;Mark L. Gerrard;J. Barry Lakeman;Ian M. Mellor;Roger J. Mortimer;Mark C. Turpin .Studies into the Storage of Hydrogen in Carbon Nanofibers: Proposal of a Possible Reaction Mechanism[J].Nano letters,2002(3):201-205. |
| [2] | 毛宗强,徐才录,阎军,梁吉,孙公敏,魏秉庆,吴德海.碳纳米纤维储氢性能初步研究[J].新型炭材料,2000(01):64-67. |
| [3] | Chan Kim;Jong-Sang Kim .Supercapacitors Prepared from Carbon Nanofibers Electrospun from Polybenzimidazol[J].Journal of the Electrochemical Society,2004(5):A769-A773. |
| [4] | Wang L;Yu Y;Chen P-C et al.Electrospun carbon-cobalt composite nanofiber as an anode marterial for lithium ion batteries[J].Scripta Materialia,2008,58(05):405-408. |
| [5] | Shofner M L;Rodriguez Macias F J;Vaidyanathan R .Single wall nanotube and vapor grown carbon fiber rein forced polymers processed by extrusion freeform fabricaion[J].Composites Part A:Applied Science and Manufacturing,2003,34(12):1207-1217. |
| [6] | E.Hammel;X.Tang;M.Trampert;T.Schmitt;K.Mauthner;A.Eder;P.Potschke .Carbon nanofibers for composite applications[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(5/6):1153-1158. |
| [7] | Haoqing Hou;Darrell H. Reneker;Darrell H. Reneker .Carbon Nanotubes on Carbon Nanofibers: A Novel Structure Based on Electrospun Polymer Nanofibers[J].Advanced Materials,2004(1):69-73. |
| [8] | Duan X;Huang Y;Wang J et al.Indium phosphide nanowires as building blocks for nanoscale electronic and optoelectronic devices[J].Nature,2001,409(6816):66-69. |
| [9] | Endo M;Takeuch K;Igarash S .The production and structure of pyrolytic carbon nanotubes[J].Journal of Physics and Chemistry of Solids,1993,54(12):1841-1848. |
| [10] | 侯鹏翔,白朔,范月英,沈祖洪,成会明.气体流动状态对纳米碳纤维制备的影响[J].新型炭材料,2000(04):17-20. |
| [11] | Vladimir I. Merkulov;A. V. Melechko;M. A. Guillorn;M. L. Simpson;D. H. Lowndes;J. H. Whealton;R. J. Raridon .Controlled alignment of carbon nanofibers in a large-scale synthesis process[J].Applied physics letters,2002(25):4816-4818. |
| [12] | Saeed, K.;Park, S.-Y. .Preparation and characterization of multiwalled carbon nanotubes/ polyacrylonitrile nanofibers[J].Journal of Polymer Research,2010(4):535-540. |
| [13] | Schadler LS.;Ajayan PM.;Giannaris SC. .Load transfer in carbon nanotube epoxy composites[J].Applied physics letters,1998(26):3842-3844. |
| [14] | Alexandre M;Dubois P .Polymer-layered silicate nanocomposites:preparation,properties and uses of a new class of materials[J].Science and Engineering:R:Reports,2000,28(1-2):1-63. |
| [15] | Geim AK;Novoselov KS .The rise of graphene[J].Nature materials,2007(3):183-191. |
| [16] | Graphene-Polymer Nanofiber Membrane for Ultrafast Photonics[J].Advanced functional materials,2010(5):782. |
| [17] | 杨永岗,陈成猛,温月芳,杨全红,王茂章.氧化石墨烯及其与聚合物的复合[J].新型炭材料,2008(03):193-200. |
| [18] | Hirata M;Gotou T;Horiuchi S;Fujiwara M;Ohba M .Thin-film particles of graphite oxide 1: High-yield synthesis and flexibility of the particles[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(14):2929-2937. |
| [19] | Lv, W.;Tang, D.-M.;He, Y.-B.;You, C.-H.;Shi, Z.-Q.;Chen, X.-C.;Chen, C.-M.;Hou, P.-X.;Liu, C.;Yang, Q.-H. .Low-temperature exfoliated graphenes: Vacuum-promoted exfoliation and electrochemical energy storage[J].ACS nano,2009(11):3730-3736. |
| [20] | Iksoo Chun;Darrell H. Reneker;Hao Fong;Xiaoyan Fang;Joe Deitzel;Nora Beck Tan;Kristen Kearns .Carbon Nanofibers from Polyacrylonitrile and Mesophase Pitch[J].Journal of advanced materials,1999(1):36-41. |
| [21] | Stephen Dalton;Frank Heatley;Peter M. Budd .Thermal stabilization of polyacrylonitrile fibres[J].Polymer: The International Journal for the Science and Technology of Polymers,1999(20):5531-5543. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%