聚3-羟基丁酸酯/大豆分离蛋白共混电纺丝性能研究

电纺丝法制备了超细聚3-羟基丁酸酯(PHB)/大豆分离蛋白共混纤维,通过扫描显微镜(SEM)、差热分析(DSC-TGA)、偏光显微镜对共混体系和纤维产品进行了结构与形态的表征。研究了共混体系的相熔融性、纺丝过程电压和接收距离及溶液浓度对纤维形态的影响。结果表明,甘油起到表面活性剂的作用,使PHB/大豆蛋白相溶,其电纺丝具有较高的取向度和结晶度。

Studies on the Morphology and Structure of Electrospun Poly (3-hydroxybutyrate)/Soya Protein Isolates Fibers

Ultra-fine Poly(3-hydroxybutyrate)/soya protein isolates fibers were prepared via electrospinning technique.The structure and morphology of the electrospun fibers were determined by scanning electron microscope(SEM),thermal analysis(DSC-TGA)and optical micrographs.The effects of melt stability,concentration,electrical potential and the distance between the spinning tip and the collector upon the morphology of electrospun fibers were also discussed.The results showed that glycerin was surface active agent in the melt PHB/soya protein blends.It was also found that electrospinning process promotes the crystallation,which may be caused by the orientation of molecule chains due to electrical force stretching.