报告主题：Keratin-based biocomposite hydrogels

报告时间：2016年05月06日上午9:15:

报告地点：东华大学延安路校区第二会议室

报告人及简介:

Mira ParkPh.D., Assistant Professor Chonbuk National University, South Korea  

    Mira Park, research assistant professor of BIN Convergence Technology Department at Chonbuk National University, South Korea. She earned a B.S. degree from the Department of Textile Engineering of Chonbuk National University in 1993. She got her M.S. and Ph.D. degree from same University in 1995 and 2002, respectively. During 2000 to 2006, she was a part-time lecturer at Chonbuk National University. She had joined the Woorinano Inc. in 2012. Then she became research assistant professor at Center for Healthcare Technology of Chonbuk National University in 2012.  

    Her main research interests transparent nanofibers, hydrogel, polymer composites, biomaterials, organic and inorganic nanofibers, carbon materials and functional materials. Her main achievements include 58 published SCI journal papers and 9 patents. Meanwhile, she also received the Excellent Paper Presentation Award of the KSIEC Fall Meeting in 2014 and 2015, respectively.

报告大纲:

    The biocompatible and highly porous keratin-based hydrogels were prepared using electron beam irradiation (EBI). The conditions for keratin-based hydrogel formation were investigated depending on several conditions, including the presence of poly(vinyl alcohol) (PVA), concentration of keratin solution, EBI dose, and poly(ethylene imine) (PEI) additives. The pure keratin (human hair and wool) aqueous solution was not gelled by EBI, while the aqueous keratin solutions blended with PVA were gelled at an EBI dose of more than 90 kGy. Furthermore, in the presence of PEI, the aqueous keratin solution blended with PVA could be gelled at a considerably lower EBI dose, even at 10 kGy. This finding suggests that the PEI additives significantly influence the rate of gelation and that PEIs function as an accelerator during gelation. The resulting keratin-based hydrogels were characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), gel fraction, degree of swelling, gel strength, and kinetics of swelling analyses.