Structure and properties of conducting bacterial cellulose-polyaniline nanocomposites

被引:110
|
作者
Marins, Jessica A. [1 ]
Soares, Bluma G. [1 ]
Dahmouche, Karim [1 ]
Ribeiro, Sidney J. L. [2 ]
Barud, Hernane [2 ]
Bonemer, Denise [2 ]
机构
[1] Univ Fed Rio de Janeiro, Ctr Tecnol, Inst Macromol, BR-21945970 Rio de Janeiro, Brazil
[2] UNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
关键词
Bacterial cellulose; Polyaniline; Nano-composite; SAXS; Impedance spectroscopy; SILVER NANOPARTICLES; PAPER; POLYPYRROLE; POLYMERS; COMPOSITES; FIBERS;
D O I
10.1007/s10570-011-9565-4
中图分类号
TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];
学科分类号
0805 ; 080502 ; 0822 ;
摘要
Conducting composite membranes of bacterial cellulose (BC) and polyaniline doped with dodecylbenzene sulfonic acid (PAni.DBSA) were successfully prepared by the in situ chemical polymerization of aniline in the presence of hydrated BC sheets. The polymerization was performed with ammonium peroxydisulfate as the oxidant agent and different amounts of DBSA. The composites were characterized by X-ray diffraction, attenuation reflectance Fourier transform infrared spectroscopy, scanning electron microscopy (SEM), impedance spectroscopy and small angle X ray scattering (SAXS). The highest electrical conductivity value was achieved by using a DBSA/aniline molar ratio of 1.5 because this condition provided a better penetration of PAni.DBSA chains inside the hydrated BC sheet, as observed by SEM. The in situ polymerization gives rise to conducting membranes with the surface constituted by different degree roughness as indicated by Nyquist plots obtained from impedance spectroscopy and confirmed by SAXS measurements. This preliminary work provides a new way to prepare cellulose-polyaniline conducting membranes which find potential applications as electronic devices, sensors, intelligent clothes, etc.
引用
收藏
页码:1285 / 1294
页数:10
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