Polyaniline nanoparticles with controlled sizes using a cross-linked carboxymethyl chitin template

被引:15
|
作者
Thanpitcha, Tuspon [1 ]
Sirivat, Anuvat [1 ]
Jamieson, Alexander M. [2 ]
Rujiravanit, Ratana [1 ]
机构
[1] Chulalongkorn Univ, Petr & Petrochem Coll, Conduct & Electroact Polymers Res Unit, Bangkok 10330, Thailand
[2] Case Western Reserve Univ, Dept Macromol Sci, Cleveland, OH 44106 USA
基金
美国国家科学基金会;
关键词
Polyaniline; Nanoparticles; Cross-linked carboxymethyl chitin; Hydrogel; Template; Conductive polymers; ALUMINUM-OXIDE TEMPLATE; CONDUCTING POLYANILINE; NANOSTRUCTURED POLYANILINE; DOPED POLYANILINE; NANOFIBERS; FILMS; MORPHOLOGY; NANOTUBES; HYDROGEL; MICROSPHERES;
D O I
10.1007/s11051-008-9515-8
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Polyaniline (PANI) nanoparticles were chemically synthesized in the presence of a cross-linked carboxymethyl chitin (CM-chitin) acting as a template. The reaction was performed under acidic conditions and the template was removed after the polymerization of aniline was completed. The morphology of the synthesized PANI was globular with a diameter in the nanometer range. The degree of cross-linking of the CM-chitin played an important role in determining the size of the obtained PANI nanoparticles, which decreased from approximately 392 to 160 nm with increase in concentration of the cross-linking agent, glutaraldehyde, from 0 to 9 mu mol, respectively. At a higher glutaraldehyde concentration (18 mu mol), an aggregated PANI network was observed due to the incomplete removal of the more highly cross-linked CM-chitin. Molecular characterization (including UV-Visible, FTIR, TGA, and XRD techniques) revealed that the structure of the synthesized PANI nanoparticles is identical to that of conventional PANI. A mechanism is proposed for the formation of PANI nanoparticles in the presence of the cross-linked CM-chitin template.
引用
收藏
页码:1167 / 1177
页数:11
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