Polypyrrole/vermiculite nanocomposites via self-assembling and in situ chemical oxidative polymerization

被引：27
作者：
Yang, Chao [1 ,2 ]
Liu, Peng [1 ,2 ]
Guo, Jinshan [1 ,2 ]
Wang, Yunpu [3 ]
机构：
[1] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China
[2] Lanzhou Univ, Inst Polymer Sci & Engn, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
[3] NW Normal Univ, Key Lab Ecoenvironm Related Polymer Mat, Minist Educ China, Lanzhou 730070, Peoples R China
来源：
SYNTHETIC METALS | 2010年 / 160卷 / 7-8期
关键词：
Polypyrrole; Vermiculite; Self-assembled monolayer; Encapsulated structure; Temperature dependent conductivity; POLYPYRROLE FILMS; VERMICULITE; COMPOSITES; MONTMORILLONITE; NANOPARTICLES; BEHAVIOR;
D O I：
10.1016/j.synthmet.2009.12.012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Conductive polypyrrole (PPy) was chemically grafted from the self-assembled monolayer (SAM) coated on expanded vermiculite (VMT), resulting in PPy/VMT nanocomposites after VMT particles were surface modified. X-ray diffraction (XRD) analysis confirmed that the main peaks of PPy/VMT nanocomposites are similar to the SAM-VMT particles, which reveal that the crystal structure of SAM-VMT is well maintained after the coating process under polymerization conditions and exhibit semi-crystalline behavior. Thermogravimetric analysis shows that the thermal stability of PPy/VMT nanocomposites was enhanced and these can be attributed to the retardation effect of amine-functionalized VMT as barriers for the degradation of PPy. The morphology of PPy/VMT nanocomposites showed the sheet structure and encapsulated morphology. The composites possess high electrical conductivity at room temperature, weakly temperature dependence of the conductivity. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：592 / 598
页数：7
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