摘要
用静电纺丝法制备了PLA/PAA纳米纤维膜.通过X射线衍射(XRD)、示差扫描量热仪(DSC)、场发射扫描电镜(FE-SEM)、万能材料试验机对样品的形貌和性能进行了表征,考察了PAA添加量以及电场条件变化对纳米纤维膜材料结晶性,热性能以及力学性能的影响.结果表明,PAA的加入改变了PLA的结晶性与热性能.当m(PLA)/m(PAA)分别为5∶1、4∶1、3∶1时,纺丝溶液质量百分浓度为8%时,在纺丝电压为20kV,接收距离为10cm的条件下,静电纺丝所得PLA/PAA纤维膜的最大拉伸力与拉伸强度均出现不同程度增加,断裂伸长率有所下降.
Polylactic acid/Acrylic acid Polymers(PLA/PAA)composite fiber films were prepared by electrospinning.The morphology,crystallinity and mechanical properties of the fiber films were examined by field emission scanning electron microscopy(FE SEM),X ray diffraction(XRD),differential scanning calorimeter(DSC)and tensile testing machine.The effects of PAA addition and the change of electric field on the crystallinity,thermal properties and mechanical properties of nanofibers were investigated.As the study shows:the blending with PAA changes the crystallinity and thermal properties of PLA.When the ratio of PLA/PAA compound is5鈭?,4鈭?,3鈭?,respectively and the mass percentage of the spinning solution was8%,under20kV of the applied voltage and receiving distance reaching10cm,and with electrostatic spinning,the maximum tensile strength and tensile strength of the PLA/PAA fiber membranes are all increased in different degrees bur the elongation at break decreased.
作者
樊国栋
李亚莉
沈文
陈莹
FAN Guo dong;LI Ya li;SHEN Wen;CHEN Ying(College of Chemistry and Chemical Engineering, Shaanxi University of Science & Technology, Xi‘an 710021, China;School of Food and Biological Engineering, Shaanxi University of Science & Technology, Xi'An 710021, China)
出处
《陕西科技大学学报》
CAS
2017年第6期50-55,共6页
Journal of Shaanxi University of Science & Technology
基金
陕西省科技厅自然科学基金项目(2014JM2-2020)
陕西省科技厅科技攻关计划项目(2014K08-12)
榆林市科技计划项目(2016-13-3)
关键词
静电纺丝
聚乳酸
力学性能
electrospinning
PLA
mechanical properties
