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Ultra-fine fibrous mats with magnolol entrapped have been prepared by electrospinning biodegradable copolymer poly(ethylene glycol) blocked poly(L-lactide).Drug entrapment was perfect which was confirmed by scanning electron microscopy and differential scanning calorimetry.According to in vitro drug release investigation by high performance liquid chromatography,it was found that fibers with 10%,20%and 30%drug entrapped respect to polymer(mass ratio) presented dramatically different drug release behavior and degradation behavior under the effect of proteinase K.The reason may be that fibers with 10%drug entrapped was more easily affected by enzyme while,to some degree,magnolol in fibers with 20% and 30%entrapped prevented polymer from being degraded by enzyme.
Ultra-fine fibrous mats with magnolol entrapped have been prepared by electrospinning biodegradable copolymer poly (ethylene glycol) blocked poly (L-lactide). Drug entrapment was perfect which was confirmed by scanning electron microscopy and differential scanning calorimetry. Accredited to in vitro drug release investigation by high performance liquid chromatography, it was found that fibers with 10%, 20% and 30% drug entrapped respect to polymer (mass ratio) presents dramatically different drug release behavior and degradation behavior under the effect of proteinase K. the reason may be that fibers with 10% drug entrapped was more easily affected by enzyme while, to some degree, magnolol in fibers with 20% and 30% entrapped prevented polymer from being degraded by enzyme.