【摘 要】
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A novel in situ formed gel system with potential biodegradability and biocompatibility is developed by mixing the diblock and triblock poly(lactic acid)/pol
【机 构】
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State Key Laboratory of Chemical Engineering,College of Chemical and Biological Engineering,Zhejiang
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A novel in situ formed gel system with potential biodegradability and biocompatibility is developed by mixing the diblock and triblock poly(lactic acid)/poly(ethylene glycol)(PLA/PEG)copolymers with opposite configurations of PLA blocks.In situ gelation of such system is extremely fast,which happens within 10 s after mixing.In situ gelation,gel-to-sol transition,crystalline structure,microstructures,and mechanical properties of PLA-PEG/PLA-PEG-PLA enantiomerically-mixed gels are significantly influenced by the mixing ratio,degree of polymerization for PEG block in triblock(DPPEG,tri)and diblock copolymers(DPPEG,di).
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