CAJ | 학술논문

采用静电纺丝方法制备了再生丝素/丝胶共混纤维,分析了共混配比对再生丝素/丝胶水溶液流变性能和静电纺可纺性的影响,通过扫描电镜、拉曼光谱和DSC等手段研究了所得纤维的形态和微细结构及其力学性能.研究结果表明:随着溶液中丝胶含量的增加,体系的表观粘度增大,静电纺纤维的直径减小且直径分布变窄;并且丝胶的存在有利于丝素蛋白从无规卷曲或α-螺旋结构向β-折叠结构转变,由此可提高静电纺纤维的力学性能.
채용정전방사방법제비료재생사소/사효공혼섬유,분석료공혼배비대재생사소/사효수용액류변성능화정전방가방성적영향,통과소묘전경、랍만광보화DSC등수단연구료소득섬유적형태화미세결구급기역학성능.연구결과표명:수착용액중사효함량적증가,체계적표관점도증대,정전방섬유적직경감소차직경분포변착;병차사효적존재유리우사소단백종무규권곡혹α-라선결구향β-절첩결구전변,유차가제고정전방섬유적역학성능.
In this paper,regenerated silk fibroin/sericin (SF/SS) composite fibers were prepared using electrospinning method.The influence of SF/SS ratio on the rheological behaviors and the spinnabilities of the blend solutions were studied.The morphology and structure of the electrospun fibers were characterized by SEM,Raman Spectroscopy and DSC,respectively.Their mechanical properties were also investigated.It was found that with the increase of SS amount,the apparent viscosity of the blend solutions increased,while the average diameter and diameter distribution of the electrospun fibers decreased.The addition of SS in the regenerated SF aqueous solution induced the conformational transition of SF from random coil or α-helix to β-sheet structure and further improved the tensile strength of the regenerated SF/SS electrospun fibers.