期刊
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
卷 14, 期 4, 页码 436-441出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jiec.2008.01.019
关键词
PCL scaffolds; Biodegradation; Gas foaming; Salt leaching; Macroporous scaffold
Macroporous poly(epsilon-caprolactone) (PCL) scaffolds were prepared by gas foaming/salt leaching method. Their degradation behaviors were investigated as a function of radiation dose (total dose; 50, 100, 200, and 300 kGy: dose rate; 10 kGy/h) in vitro and in vivo. The PCL scaffolds have porosity of 86-96.8%. The porosity and mechanical strength could be controlled by the adjustment of an acid-base gas evolving reaction between citric acid and ammonium bicarbonate. The irradiated scaffolds were degraded faster than unirradiated ones. And scaffolds were degraded more slowly in vitro than in vivo regardless of irradiated or unirradiated ones. (C) 2008 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All fights reserved.
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