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.