POSS对壳聚糖膜的阻湿与拉伸性能的影响

发布时间：2018-04-02 17:29

本文选题：四甲基铵基笼形聚倍半硅氧烷　切入点：壳聚糖　出处：《包装工程》2016年21期

【摘要】：目的研究以四甲基铵基笼形聚倍半硅氧烷(Octa TMA POSS)为填料,制备壳聚糖基复合膜,对壳聚糖薄膜的水蒸气阻隔性能和力学性能进行改善。方法采用溶液共混流延法制备复合膜,测定其水蒸气透过系数、表面接触角、溶胀度、溶解度、吸附等温曲线、拉伸性能、成膜液流变性能、微观形貌和X射线衍射等。结果笼形聚倍半硅氧烷的加入可提高复合膜对水分子的阻隔性,尤其是质量分数为3%时,其水蒸气透过系数下降了15.9%。同时,壳聚糖薄膜的力学性能也得到改善,在质量分数低于5%时,壳聚糖薄膜的抗拉强度、弹性模量可同时得到提高。结论四甲基铵基笼形聚倍半硅氧烷的加入可改善壳聚糖薄膜的阻湿性能和力学性能,可大大提升其在食品包装领域的应用潜力。
[Abstract]:Methods the water vapor transmittance, surface contact angle, swelling, solubility, adsorption isothermal curve, tensile properties, rheological properties, micromorphology and X-ray diffraction were measured.Results the barrier of the composite membrane to water molecules was improved with the addition of cage polysilane, especially when the mass fraction was 3, the water vapor permeability coefficient decreased by 15.9.Conclusion the addition of tetramethylammonium-based polysilsesquioxane can improve the moisture and mechanical properties of chitosan film and enhance its application potential in the field of food packaging.
【作者单位】：西南大学;
【基金】：国家自然科学基金青年基金(21306154) 中国博士后科学基金(2014M552298)
【分类号】：O636.1;TB383.2

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