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Murat Inal,Nuran Işıklan,Mustafa Yigitoglu 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.52 No.-
In this study, pH-sensitive alginate-g-poly(N-vinyl-2-pyrrolidone)/gelatin (SA-g-PVP/Gel) blend beadswere produced as controlled release system. Structural features of the SA-g-PVP/Gel beads werecharacterized by FTIR, X-RD, DSC, SEM and mercury intrusion-porosimetry. In vitro nifedipine (NFD)release was investigated at pH 1.2 for 2 h and followed by immersing at pH 7.4 for 6 h. Effects of diverseparameters such as grafting of PVP, copolymer/gelatin blend ratio, concentration of cross-linker and drugamount on the release of NFD were investigated. The NFD release from SA-g-PVP/Gel beadsdemonstrated pH-sensitivity of drug release. Cytotoxicity experiments of SA-g-PVP and SA-g-PVP/Gelbeads displayed their biocompatible character.