摘要
采用静电纺丝技术以聚乙烯吡咯烷酮(PVP)为载体基质,聚乙二醇(PEG)为相变材料合成了一种相变纳米纤维。考察了溶液浓度、纺丝电压、接收距离等对静电纺丝效果的影响。对于不同PEG相对分子质量,以及混合溶液中不同的PEG含量对于纳米纤维形态及直径的影响进行了研究,研究结果显示,相变纳米纤维呈现圆柱形状而且表面比较光滑,纳米纤维的直径在370 nm^620 nm,而且,纳米纤维的直径随着PEG含量和PEG相对分子质量的增加呈现增大的趋势。同时,用差示扫描量热法测试了相变纳米纤维的相变温度,其值与PEG含量有关。
Ultrafine fibers of polyethylene glycol/ polyvinylpyrrolidone(PEG/PVP)composite in which PEG acts as model phase change material(PCM)and PVP acts as supporting material, were successfully prepared via electrospinning as phase change materials. The effectof electro-spinning factorsincluding the concentration of spinning solution,the collect distance and the spinning voltage on the morphology of the fibers was studied. The effect of PEG content and its molecularweighton morphology of the PEG/PVP composite fiberswas studied. The morphology observation from the composite fibers reveals that the fibers are cylindrical and have smooth external surface, and with increase of PEG content and its molecular weight, the average diameters of PEG/PVP phase change fibers increase from 370 nm to 620 nm. The phase change properties of composite fibers were tested by DSC. The result indicates that Tmis affected by different ratios of PEG component.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2014年第4期176-178,185,共4页
Polymer Materials Science & Engineering
基金
北京市教育委员会科技发展计划面上项目资助
北京市属高等学校高层次人才引进与培养计划项目-青年拔尖人才项目
关键词
静电纺丝
聚乙二醇
聚乙烯吡咯烷酮
相变材料
纳米纤维
electro-spinning
polyethylene glycol
polyvinylpyrrolidone
phase change material
nano-fiber
