论文标题
钙矿对纳米复合明胶膜的结构，热稳定性和屏障特性的影响
Effect of Laponite on the structure, thermal stability and barrier properties of nanocomposite gelatin films
论文作者
论文摘要
研究了Laponite（一种合成粘土）对纳米复合材料明胶膜的结构，热和水蒸气屏障特性的影响，研究了由0、4.5和15％W圈/W明胶铸造而产生的。报道了X射线衍射，差异扫描量热法，热重分析和傅立叶变换红外光谱测量。 X射线衍射模式显示出具有三重螺旋的胶原型束的膜的双重结构，在粘土血小板内插入，增加了层间距离。根据三螺旋和laponite含量的重新饱和，玻璃过渡温度大大降低。螺旋量随着膝盖的浓度降低，影响熔化的焓。纳米复合明胶膜显示出改善的热稳定性。水蒸气渗透性的变化可能与存在较大的自由体积线圈和嵌入结构有关，从而促进了通过膜的水转移。
The effect of Laponite (a synthetic clay) on the structure, thermal and water vapor barrier properties of nanocomposite gelatin films produced by casting with 0, 4.5 and 15% w Lap/w gelatin, was studied. X-ray diffraction, differential scanning calorimetry, thermogravimetric analysis and Fourier transform infrared spectroscopy measurements were reported. The X-ray diffraction patterns showed dual crystalline structure of the films with collagen-type bundles of triple helices, intercalated inside clay platelets, increasing interlayer distances. Depending on the renaturation of triple-helices and Laponite content, the glass transition temperatures substantially decreased. The amount of helices decreased with Lap concentration, affecting the enthalpy of melting. The nanocomposite gelatin films showed improved thermal stability. Changes of water vapor permeability could be related to the presence of larger free volume of the coils and intercalated structures, facilitating water transfer through the film.
