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首页> 外文期刊>Journal of Applied Polymer Science >Blend films from chitosan and konjac glucomannan solutions
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Blend films from chitosan and konjac glucomannan solutions

机译：混合壳聚糖和魔芋葡甘露聚糖溶液中的薄膜

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Blend films were prepared by blending 7 wt % konjac glucomannan (KGM) aqueous solution with 2 wt % chitosan (CH) in acetate solution and dried at 40 degrees C for 4 h to obtain the transparent films. Their structure and properties were studied by infrared (IR), wide-angle X-ray diffraction (WAXD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential thermal analysis (DTA). Crystallinities of the blend films decreased with the increase of konjac glucomannan. The thermostability, tensile strength, and breaking elongation of the blend films in dry state were obviously higher than those of both konjac glucomannan and chitosan films. Tensile strength of the dry blend film achieved 73.0 MPa when the weight ratio of chitosan to konjac glucomannan was 7:3. The structure analysis indicated that there is a strong interaction between konjac glucomannan and chitosan resulted from intermolecular hydrogen bonds. The water solubility of the blend films was improved by blending with konjac glucomannan, so they have promising applications to soluble antiseptic coating of pills. (C) 2000 John Wiley & Sons, Inc. [References: 22]
机译：通过将7重量％魔芋葡甘露聚糖（KGM）水溶液与2重量％壳聚糖（CH）在乙酸盐溶液中共混来制备共混膜，并在40℃下干燥4小时以获得透明膜。通过红外（IR），广角X射线衍射（WAXD），扫描电子显微镜（SEM），热重分析（TGA）和差热分析（​​DTA）研究了它们的结构和性质。共混膜的结晶度随魔芋葡甘露聚糖含量的增加而降低。干燥状态下共混膜的热稳定性，拉伸强度和断裂伸长率均明显高于魔芋葡甘露聚糖膜和壳聚糖膜。当壳聚糖与魔芋葡甘露聚糖的重量比为7：3时，干混膜的拉伸强度达到73.0 MPa。结构分析表明，魔芋葡甘露聚糖与壳聚糖之间的强相互作用是由于分子间的氢键引起的。通过与魔芋葡甘露聚糖共混可提高共混膜的水溶性，因此它们在药丸的可溶性防腐剂包衣中具有广阔的应用前景。 （C）2000 John Wiley＆Sons，Inc. [参考：22]

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