作　　者： ; ; ;

机构地区： 西安建筑科技大学理学院

出　　处： 《功能高分子学报》 2007年第4期364-368,共5页

摘　　要： 以乙酸为共溶剂,制备了壳聚糖-聚羟基丁酸酯(CTS-PHB)共混膜,利用红外光谱(FT-IR)、广角X粉末衍射(WAXD)、扫描电镜(SEM)及差热分析(DTA)表征了共混膜的化学组成、晶形、形貌和热稳定性能。研究表明:CTS和PHB可在体积百分数为62.5%的乙酸溶液中共混,形成表面光滑、不透明的膜,干态共混膜具备一定的力学强度。各比例的CTS-PHB共混膜有相同的热分解温度,共混膜的形貌特征随两组分质量配比变化,其中mPHB/mCTS=1/1的共混膜显示出良好的有序结构。 The chitosan-poly（3-hydroxybutyrate） （CTS-PHB） blend films were obtained in acetic acid as co-solvent. The chemical composition, crystal form, surface morphologies and thermal stability of the blend films were characterized with fourier transform infrared spectrum （FT-IR）, wide-angel X-ray diffraction （ WAXD）, scanning electron microscopy （SEM） and differential thermal analysis （DTA）. The results indicate that CTS and PHB could be blended in 62.5% acetic acid and the films prepared are smooth, opaque and brittle. The dry blend films have a determinate mechanical strength. All the CTS-PHB blend films with different ratios have the same thermal decomposition temperature. The surface appearance of blend films changes with mass proportion, and the blend film of mPHB/mCTS=1/1 shows the best ordered structure.

关 键 词： 壳聚糖 聚羟基丁酸酯 乙酸 共混膜

领　　域： [理学] [理学]