| POLYMERS AND POLYMER MATRIX COMPOSITES |
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| The Effect of Post-treatment on the Properties of Electrospun Fibroin Film and Its Mechanism |
| XU Mengting1,2,3, MA Yan1,2,3, LIU Zulan1,2,3, CHEN Lei1,2,3, DAI Fangyin1,2,3, LI Zhi1,2,3,*
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1 State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
2 Chongqing Engineering Research Center of Biomaterial Fiber and Modern Textile, College of Sericulture, Textile and Biomass Sciences, Southwest University, Chongqing 400715, China
3 Key Laboratory of Sericultural Biology and Genetic Breeding, Ministry of Agriculture and Rural Affairs, College of Biote chnology, Southwest University, Chongqing 400715, China |
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Abstract 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.
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Published: 03 August 2021
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| Fund:Innovation Program for Chongqing's Overseas Returnees(cx2019090),State Key Laboratory of Silkworm Genome Biology(sklsgb-2019KF13),Fundamental Research Funds for the Central Universities(XDJK2018B015). |
About author:: Mengting Xu, master's degree, research direction is the development and utilization of new fiber materials.
Zhi Li, Ph.D., associate professor, research direction: functional fiber and biomedical materials. |
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2021, Vol. 35 
