P(MMA-St)/MWNTs复合材料导电性能研究

华东师范大学学报(自然科学版) ›› 2012, Vol. 2012 ›› Issue (4): 43-49, 60.

P(MMA-St)/MWNTs复合材料导电性能研究

智慧，徐学诚

华东师范大学物理系，上海 200241

收稿日期:2011-09-01 修回日期:2012-01-01 出版日期:2012-07-25 发布日期:2014-12-15

Electrical conductivity properties of P(MMA-St)/MWNTs composites

ZHI Hui, XU Xue-cheng

Department of Physics, East China Normal University, Shanghai 200241, China

Received:2011-09-01 Revised:2012-01-01 Online:2012-07-25 Published:2014-12-15

摘要/Abstract

摘要： 采用原位乳液聚合法制备了甲基丙烯酸甲酯-苯乙烯共聚物（P(MMA-St)）包覆多壁碳纳米管（MWNTs）复合材料.研究了MWNTs含量和共聚物单体配比对复合材料导电性能的影响；用 SEM、FTIR、Raman和XPS等手段，探究了复合材料结构、相互作用与性能之间的关系.结果表明，MWNTs的加入提高了复合材料的热稳定性和电导率：当MWNTs含量一定，提高PMMA链段含量时，共聚物与MWNTs的作用增强，共聚物更易均匀地包覆在MWNTs表面，呈现出优异的热、电性能.

关键词: 甲基丙烯酸甲酯-苯乙烯共聚物, 多壁碳纳米管, 原位乳液聚合, 成键, 掺杂

Abstract: Methyl methacrylate-styrene copolymer-encapsulated multiwalled carbon nanotubes(MWNTs) composites were prepared via situ emulsion polymerization. The influence of the MWNTs content and the monomer ratio of the copolymer on the properties of composites were studied. The relationship between the structure, interaction and properties of the composites were initiated by SEM, FTIR, Raman and XPS. The results indicated that the thermal stability and electrical conductivity of the composites are enhanced with addition of MWNTs. When the content of MWNTs unchanged, the interaction between copolymers and MWNTs enhanced with increasing the content of PMMA chains segment. Copolymers are encapsulated on the surface of MWNTs evenly and the thermal stability and electrical conductivity of composites became higher.

Key words: P(MMA-St), MWNTs, in situ emulsion polymerization, bonding, doping

中图分类号:

O631.2+3

智慧，徐学诚. P(MMA-St)/MWNTs复合材料导电性能研究[J]. 华东师范大学学报(自然科学版), 2012, 2012(4): 43-49, 60.

ZHI Hui, XU Xue-cheng. Electrical conductivity properties of P(MMA-St)/MWNTs composites[J]. Journal of East China Normal University(Natural Sc, 2012, 2012(4): 43-49, 60.

参考文献

[1] SAHOO N G, RANA S, CHO J W, et al. Polymer nanocomposites based on functionalized carbon nanotubes［J］. Prog Polym Sci, 2010, 35: 837-867.

[2] MA P C, SIDDIQUI N A, MAROM G, et al. Dispersion and functionalization of carbon nanotubes for polymer-based nanocomposites:A review［J］. Composites Part A, 2010, 41: 1345-1367.

[3] SPITALSKY Z, TASIS D, PAPAGELIS K, et al. Carbon nanotube-polymer composites:Chemistry, processing, mechanical and electrical properties［J］. Prog Polym Sci, 2010, 35: 351-401.

[4] HUANG Y L, YUEN S M, MA C C, et al. Morphological, electrical, electromagnetic interference (EMI) shielding,

and tribological properties of functionalized multiwalled carbon nanotube/poly methyl methacrylate (PMMA)

composites[J]. Compos Sci Technol, 2009, 69: 1991-1996.

[5] LAHELIN M, ANNALA M, NYKNEN A, et al. In situ polymerized nanocomposites: Polystyrene/CNT and

Poly(methyl methacrylate)/CNT composites[J]. Compos Sci Technol, 2011, 71: 900-907.

[6] YAN D, YANG G. An innovative method to improve the electrical conductivity of multiwalled carbon nanotubes

filled polyamide 6/polystyrene blends[J]. Mater Lett, 2009, 63: 1900-1903.

[7] BUI K, GRADY B P, PAPAVASSILIOU D V. Heat transfer in high volume fraction CNT nanocomposites:

Effects of internanotube thermal resistance[J]. Chem Phys Lett, 2011, 508: 248-251.

[8] 盛玮, 徐学诚. 接枝聚苯乙烯/多壁碳纳米管纳米复合材料制备及合成机理[J]. 化学学报, 2011, 69: 1393-1398.

[9] LIER G V, ASSCHE G V, MILTNER H E, et al. Theoretical analysis of carbon nanotube wetting in polystyrene

nanocomposites[J]. Phys Chem Chem Phys, 2009, 11: 11121-11126.

[10] THEODOSIOU T C, SARAVANOS D A. Numerical investigation of mechanisms affecting the piezoresistive

properties of CNTdoped polymers using multiscale models[J]. Compos Sci Technol, 2010, 70: 1312-1320.

[11] 董炎明. 高分子分析手册[M]. 北京: 中国石化出版社, 2004: 459.