采用化学氧化还原法合成了聚吲哚,利用静电纺丝技术制备了聚吲哚导电纳米纤维,并通过正交实验优化工艺参数为纺丝液浓度2%,挤出速率1 m L/h,纺丝电压20 k V,接收距离18 cm,最终制得直径为216 nm的聚吲哚导电纳米纤维。利用扫描电镜、红...采用化学氧化还原法合成了聚吲哚,利用静电纺丝技术制备了聚吲哚导电纳米纤维,并通过正交实验优化工艺参数为纺丝液浓度2%,挤出速率1 m L/h,纺丝电压20 k V,接收距离18 cm,最终制得直径为216 nm的聚吲哚导电纳米纤维。利用扫描电镜、红外光谱、X射线衍射、差示扫描量热恩熙及电导率测试对聚吲哚纳米纤维的结构和性能进行了表征,结果表明,静电纺丝过程中聚吲哚的分子链结构并没有发生明显变化;静电纺聚吲哚纳米纤维的结晶更完善、电导率提升了近120%。静电纺丝后聚吲哚的玻璃化转变温度和熔融温度变化不大,分别在130℃和240℃附近,但热降解温度从465℃下降至420℃。展开更多
Nanosized fibrous cerium（IV） hydrogen phosphate membrane, Ce（HPO4）2·2.9H20 （nCePf）, was prepared and characterized by chemical, XRD （X-ray diffraction）, TGA （thermogravimetric analysis）, SEM （scanning ...Nanosized fibrous cerium（IV） hydrogen phosphate membrane, Ce（HPO4）2·2.9H20 （nCePf）, was prepared and characterized by chemical, XRD （X-ray diffraction）, TGA （thermogravimetric analysis）, SEM （scanning electron microscopy） and TEM （transmission electron microscopy）. Novel supported nanofibrous Ce（IV） phosphate/polyiondole nanocomposite membranes were prepared via in-situ chemical oxidation of the monomer that was promoted by the reduction of Ce（IV） ions present in the inorganic matrix. The presence of Ce（IV） ions allows redox reactions necessary to oxidative polymerization to occur. The resultant material was characterized by TGA, elemental （C, H, N） analysis and FT-IR （Fourier transform spectroscopy）. SEM images of the resulting nanocomposite reveals a uniform distribution of the polymer on the inorganic matrix. Amount of polyindole polymer present in the composite is found to be - 7.0%.展开更多
文摘采用化学氧化还原法合成了聚吲哚,利用静电纺丝技术制备了聚吲哚导电纳米纤维,并通过正交实验优化工艺参数为纺丝液浓度2%,挤出速率1 m L/h,纺丝电压20 k V,接收距离18 cm,最终制得直径为216 nm的聚吲哚导电纳米纤维。利用扫描电镜、红外光谱、X射线衍射、差示扫描量热恩熙及电导率测试对聚吲哚纳米纤维的结构和性能进行了表征,结果表明,静电纺丝过程中聚吲哚的分子链结构并没有发生明显变化;静电纺聚吲哚纳米纤维的结晶更完善、电导率提升了近120%。静电纺丝后聚吲哚的玻璃化转变温度和熔融温度变化不大,分别在130℃和240℃附近,但热降解温度从465℃下降至420℃。
文摘Nanosized fibrous cerium（IV） hydrogen phosphate membrane, Ce（HPO4）2·2.9H20 （nCePf）, was prepared and characterized by chemical, XRD （X-ray diffraction）, TGA （thermogravimetric analysis）, SEM （scanning electron microscopy） and TEM （transmission electron microscopy）. Novel supported nanofibrous Ce（IV） phosphate/polyiondole nanocomposite membranes were prepared via in-situ chemical oxidation of the monomer that was promoted by the reduction of Ce（IV） ions present in the inorganic matrix. The presence of Ce（IV） ions allows redox reactions necessary to oxidative polymerization to occur. The resultant material was characterized by TGA, elemental （C, H, N） analysis and FT-IR （Fourier transform spectroscopy）. SEM images of the resulting nanocomposite reveals a uniform distribution of the polymer on the inorganic matrix. Amount of polyindole polymer present in the composite is found to be - 7.0%.
