http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Synthesis of Uniform Polyaniline Nanosheets and Nanotubes: Dependence of Morphology on the pH
Yumei Zhang,Chengfu Dou,Wenping Wang,Qiang Wang,Ningchuan Feng 한국고분자학회 2016 Macromolecular Research Vol.24 No.8
Polyaniline (PANI) nanomaterials were synthesized by simplified template-free method with ammonium persulfate (APS) as an oxidant. The strong dependence of morphology of polyaniline on the initial pH of the reaction solution has been found. PANI morphology transformed from nanosheets to nanotubes with the decreasing initial pH from 6.70~6.50 to 5.30~5.00, and nanotubes changed further to irregular granules with the decreasing pH lower than 2.26. Polyaniline nanosheets were highly crystalline (2θ=6.2°) but poor in conductivity (5.7×10-5 S/cm) and electroactivity due to low doping level. Though polyaniline nanotubes were poorly crystalline, it had a relative high conductivity (3.4×10-2 S/cm) and maintained the electroactivity in acidic and neutral media which had potential applications in biomedical fields such as tissue engineering and biosensor.