CAJ | 학술논문

采用静电纺丝法制备了PVP/Sr（OOCCH3）2.0.5H2O-C15H21FeO6复合纤维和SrFeO3-δ纤维,利用扫描电镜对纤维的形貌进行了分析,详细讨论了纺丝工艺参数（PVP浓度、电压、喷丝头与收集板间距离）对纤维的形成及形貌的影响。结果表明,溶液浓度过低或过高都无法形成纤维结构;复合纤维的直径随着PVP浓度、纺丝电压的增大而增大;当喷丝头与收集板间距离增大,纤维平均值减小。复合纤维经800℃烧结后,形成了较纯的立方钙钛矿型SrFeO_3-δ纳/微米纤维,其平均直径在350nm左右,晶粒平均尺寸为32nm。
채용정전방사법제비료PVP/Sr（OOCCH3）2.0.5H2O-C15H21FeO6복합섬유화SrFeO3-δ섬유,이용소묘전경대섬유적형모진행료분석,상세토론료방사공예삼수（PVP농도、전압、분사두여수집판간거리）대섬유적형성급형모적영향。결과표명,용액농도과저혹과고도무법형성섬유결구;복합섬유적직경수착PVP농도、방사전압적증대이증대;당분사두여수집판간거리증대,섬유평균치감소。복합섬유경800℃소결후,형성료교순적립방개태광형SrFeO_3-δ납/미미섬유,기평균직경재350nm좌우,정립평균척촌위32nm。
Being synthesized with sol-gel electro-spinning technology, the PVP/SFO composite fibers and the SrFeOa_a micro-nanofibers are characterized by means of scanning electro microscopy (SEM).The Effects of the parameters such as PVP concentration, the votage and distance between the anode and cathode on the fiber structures are studied and the results indicated that the over high or over low concentration of the PVP solution may not form the fibers. The diameter of the fiber increases when the concentration and the voltage increase, but decreases with the distance between the anode and cathode decrease. After calcinations at 800 ℃, the orthogonal perovokite structure SrFeO_3-δ micronanofibers are successfully prepared, and the average fiber diameter is about 400 nm with an average grain size of 32 nm.