期刊
CELLULOSE
卷 21, 期 3, 页码 1757-1767出版社
SPRINGER
DOI: 10.1007/s10570-014-0189-3
关键词
Cellulose nanofibers; Polyaniline; Conducting composite; Polymerization
资金
- Fundamental Research Funds for the Central Universities [DL12DB01]
- Program for New Century Excellent Talents in University [NCET-10-0313]
Cellulose nanofibers (CNFs), derived from the most abundant and renewable biopolymer, are known as natural one-dimensional nanomaterials because of their high aspect ratio. CNFs also are rich in hydroxyl groups, offering opportunities for functionalization toward development of high-value nanostructured composites. Herein, CNFs were extracted from poplar wood powder by chemical pretreatment combined with high-intensity ultrasonication, and then coated with polyaniline (PANI) through in situ polymerization. The PANI-coated CNFs formed nanostructured frameworks around PANI, thereby conferring the CNF/PANI composite with stability and higher charge transport. The optimum PANI content to achieve maximum conductivity of CNF/PANI composites was determined. The morphology, crystall structure, chemical composition, and conductivity of the samples were characterized by transmission electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, and four-point probe method, respectivily. Our results demonstrated that CNFs can be effective as a template for a flexible and stable conducting polymer to form higher-order nanostructures.
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