Effects of Annealing on the Crystallization and Morphology of Electrospun Poly(L-lactic acid) Fibers
Biodegradable polymeric nanofibers produced by electrospinning have been used as scaffolds for tissue engineering.As one kind of biodegradable material,electrospun polylatic acid fibers have an important application on biomedical materials.For better application of this kind of material,the properties of annealed electrspun poly(L-lactic acid) (PLLA) was studied in this investigation.The material properties of as-spun and annealed nanofibers were studied using differential scanning calorimeter (DSC),X-ray diffraction (XRD) and field emission scanning electron microscope (FE-SEM).Thermal and XRD analysis revealed that PLLA as-spun fiber exhibited amorphous phase and began to crystalline when annealing temperature was above its glass transition temperature.SEM measurements of annealed fibers showed that fusion among fibers occurred when annealing temperature was too high.
Elctrospinning Poly(L-lactic acid) Annealing Crystallization Morphology
Feng Su Hao Yu Shuqi Zhu Wenjuan Chen Fang Huang Meifang Zhu
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
国际会议
the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))
太原
英文
473-477
2012-07-13（万方平台首次上网日期，不代表论文的发表时间）