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Poly(ethylene oxide)/Poly(ε-caprolactone) 혼성체로부터 Bioactive Agent의 방출 거동에 관한 연구
유영태,허정림,정채열 건국대학교 1995 學術誌 Vol.39 No.2
Poly(ε-caprolactone)/poly(ε-caprolactone)-b-poly(ethylene oxide) hybrid membranes were used for the zeroth order release of lyophobic drug. Diffusivity of the drug increased with the copolymer content of the blend and the release rate was inversely proportional to the thickness of the membrane. The effective diffusivity of the drug was estimated as 1.07×10-3mm2/hr, 1.27×10-3mm2/hr and 1.83×10-3mm2/hr for the membranes containing 37.5wt% of PCL-PEO-PCL block copolymers with compositions of 20k-20k-20k, 15k-15k-15k and 6k-6k-6k, respectively.