【摘要】 以聚乙烯吡咯烷酮(PVP)为络合剂,与醋酸钡[Ba(CH3COO)2]反应制得前驱体溶液;以36%乙酸为钡盐的相容剂,和乙醇组成了混合溶剂体系,用静电纺丝法制备了PVP/Ba(CH3COO)2纤维,经煅烧得到BaO微/纳米纤维。对所制备纳米纤维的结晶度、纯度和表面形貌,分别采用差热-热重分析、红外光谱、X-射线衍射、扫描电镜等进行了表征。结果表明:煅烧前后,纤维的结晶度和形貌有很大变化。更多还原

【Abstract】 PVP/Ba(CH3COO)2 composite micro/nanofibers were prepared by electrospinning with barium acetate and PVP as starting materials.The mixed solvent system was composed of ethanol and 36 % acetic acid which was way of a barium acetate compatilizer.After calcinating the above precursor fibers,BaO micro/nanofibers were obtained.The BaO micro/nanofibers were characterized by TG,FT-IR,XRD and SEM,respectively.The results showed that the crystalline phase and morphology of BaO fibres were greatly changed by the calcination temperature.更多还原