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Well-Controlled Microcellular Biodegradable PLA/Silk Composite Foams Using Supercritical CO2

Authors
Kang, Dong JinXu, DengZhang, Zhen XiuPal, KaushikBang, Dae SukKim, Jin Kuk
Issue Date
14-Sep-2009
Publisher
WILEY-V C H VERLAG GMBH
Keywords
biocompatibility; composites; foams; microstructures
Citation
MACROMOLECULAR MATERIALS AND ENGINEERING, v.294, no.9, pp 620 - 624
Pages
5
Journal Title
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume
294
Number
9
Start Page
620
End Page
624
URI
https://scholarworks.bwise.kr/kumoh/handle/2020.sw.kumoh/26857
DOI
10.1002/mame.200900103
ISSN
1438-7492
1439-2054
Abstract
PLA biodegradable composites reinforced with various silk fibroin powder contents (0, 1, 3, 5 and 7 wt.-%) were prepared by solution processing technique using CH2Cl2 as solvent. After that the composites and virgin PLA were foamed by using supercritical CO2. The influence of silk contents on PLA/silk fibroin powder composite foams were investigated by using SEM, XRD and DSC. Compared with PLA foam, the composite foams exhibited a reduction in cell size and increase in cell density at high silk content. With an increase in saturation temperature and pressure, the cell size was increasing and both the cell density and foam density were decreased simultaneously.
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