后处理对静电纺丝素纤维膜性能的影响  被引量:6

The Effect of Post-treatment on the Properties of Electrospun Fibroin Film and Its Mechanism

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作  者:徐梦婷 马艳[1,2,3] 刘祖兰[1,2,3] 陈磊 代方银[1,2,3] 李智 XU Mengting;MA Yan;LIU Zulan;CHEN Lei;DAI Fangyin;LI Zhi(State Key Laboratory of Silkworm Genome Biology,Southwest University,Chongqing 400715,China;Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile,College of Sericulture,Textile and Biomass Sciences,Southwest University,Chongqing 400715,China;Key Laboratory of Sericultural Biology and Genetic Breeding,Ministry of Agriculture and Rural Affairs,College of Biote chnology,Southwest University,Chongqing 400715,China)

机构地区:[1]西南大学家蚕基因组生物学国家重点实验室,重庆400715 [2]西南大学蚕桑纺织与生物质科学学院,重庆市生物质纤维材料与现代纺织工程技术研究中心,重庆400715 [3]西南大学生物技术学院,农业部蚕桑生物学与遗传育种重点实验室,重庆400715

出  处:《材料导报》2021年第14期14180-14184,共5页Materials Reports

基  金:2019年重庆市留创计划创新类资助项目(cx2019090);家蚕基因组生物学国家重点实验室开放课题资助(sklsgb-2019KF13);中央高校基本业务费项目(XDJK2018B015)。

摘  要:静电纺丝素纤维膜在载药、组织工程及多种电池的研究中具有广泛的应用。静电纺丝素纤维膜在制备过程中,需要后处理以保持纤维的形状及提升纤维膜的性能。本研究以乙醇和甘油对静电纺丝素纤维膜进行后处理,并通过SEM、FTIR、XRD、TGA等表征手段系统研究了不同后处理条件对静电纺丝素纤维膜的结构及性能的影响,并分析及探讨了其影响机制。结果表明:仅用75%(体积分数)乙醇后处理可使丝素蛋白分子β折叠含量增大,纤维膜断裂强度显著增强;仅用甘油后处理可使丝素蛋白分子链无规卷曲度提高,纤维膜的断裂伸长率显著提高,亲水性大大增强;而用75%乙醇结合不同浓度的甘油对静电纺丝素纤维膜进行后处理可调控其力学性能,使其更能满足在不同领域的应用需求。Electrospun fibroin membrane has been widely used in drug loading,tissue engineering and battery.In the preparation of electrospun membrane,post-treatment is needed to keep the shape of the fiber and improve the performance of the membrane.In this paper,silk fibroin protein was extracted from natural silk,regenerated silk fibroin membrane was prepared by electrospinning,and the membrane was post treated with ethanol and glycerin.The conformation change of silk fibroin membrane was studied by SEM,FTIR,XRD,TGA firstly,then the physical and chemical properties of silk fibroin membrane were tested.Impacts from different post-treatment methods were explored.The results show that 75vol% ethanol makes the regenerated silk fibroin fiber bend and deform,the molecular crystallinity and the tensile strength increases;glycerin makes the fiber shrink and relax,the random curvature of the molecular chain increases,the material ductility is better,and the hydrophilicity is greatly enhanced.The post-treatment of silk fibroin membrane through different combinations can improve the performance of silk fibroin membrane.

关 键 词:丝素蛋白 静电纺丝  乙醇 甘油 

分 类 号:TQ142.2[化学工程]

 

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