화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터)
권호 38권 1호
발표분야 고분자가공/복합재료
제목 Properties of poly(D,L-lactide-co-glycolide)/GO nanocomposite films
초록 Poly(D,L-lactide-co-glycolide) 50:50 (PLGA) / graphene oxide (GO) nanocomposite films were prepared with various GO weight fractions. A significant enhancement of mechanical properties of the PLGA / GO nanocomposite films was obtained with GO weight fractions. The incorporation of only 5wt% GO resulted in an ~2.5-fold and ~4.7-fold increase in the tensile strength and Young’s modulus of PLGA, respectively. The thermomechanical behaviour of composite films were investigated by dynamic mechanical analysis (DMA), the results indicated that the values of Tg and storage modulus of the PLGA / GO composites were higher than those of the pristine polymer. In this work, we also studied about the results of their in vitro biodegradation behaviours. PLGA / GO composite films were hydrolyzed at 37 °C for periods up to 49 days. Because of the antibacterial activity of the GO nanosheets, the degradation of the composite films took place more slowly with increasing GO amounts.
저자 박진주, 유은정, 하창식
소속 부산대
키워드 Poly(D; L-lactide-co-glycolide) 50:50; Graphene oxide; nanocomposite film; thermomechanical properties; degradation behaviour
E-Mail csha@pusan.ac.kr