Preparation of nanosize polyaniline by solid-state polymerization and determination of crystal structure

被引:46
作者
Bhadra, Sambhu [1 ]
Kim, Nam Hoon [2 ]
Rhee, Kyong Yop [3 ]
Lee, Joong Hee [1 ,2 ]
机构
[1] Chonbuk Natl Univ, Dept Polymer & Nano Engn, BIN Fus Res Team, Jeonju 561756, Jeonbuk, South Korea
[2] Chonbuk Natl Univ, Dept Hydrogen & Fuel Cell Engn, Jeonju 561756, Jeonbuk, South Korea
[3] Kyonghee Univ, Dept Mech Engn, Yongin 446701, Kyongki Do, South Korea
关键词
conducting polymers; crystal structures; X-ray diffraction; Fourier transform infrared (FTIR); UV-visible; ELECTROCHEMICAL SYNTHESIS; SYNTHESIZED POLYANILINE; CONDUCTING POLYMERS; POWDER DIFFRACTION; DICHOTOMY METHOD; NANOFIBERS; FILMS;
D O I
10.1002/pi.2646
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
BACKGROUND: Nanosize polyaniline has several advantages in both the fabrication of nanodevices and for preparing nanoscale electrical connections in highly conducting polymer composites. RESULTS: Nanosize polyaniline with a diameter of 30-60 nm was prepared using a solid-state polymerization process (PANI-S) by mixing an equimolar quantity of ammonium persulfate and anilinium chloride crystals with a mortar and pestle. Polyaniline was also synthesized using a conventional oxidative polymerization method (PANI-C) in an aqueous medium for comparison. Conductivity and contact angle measurements, infrared spectroscopy, ultraviolet spectroscopy, transmission electron microscopy and thermogravimetric analysis were carried out. An in-depth investigation of the crystal structure of these polymers was carried out through powder X-ray diffraction analysis. CONCLUSION: PANI-S exhibited lower conductivity due to the presence of less emeraldine base form, lower crystallinity, greater d-spacing and greater inter-chain separation than PANI-C. The hydrophilicity and thermal stability of PANI-S were higher than those of PANI-C. The unit cell volume of PANI-S was much higher, resulting in a larger crystallite size and a greater number of atoms in the unit cell than PANI-C. (C) 2009 Society of Chemical Industry
引用
收藏
页码:1173 / 1180
页数:8
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