Department of Biofibers and Biomaterials Science, Kyungpook National University, Daegu 41566, Republic of Korea.
Department of Biofibers and Biomaterials Science, Kyungpook National University, Daegu 41566, Republic of Korea.
Carbohydr Polym. 2020 Jul 15;240:116307. doi: 10.1016/j.carbpol.2020.116307. Epub 2020 Apr 26.
Nanocomposite film of pullulan (PULL), tempo cellulose nanofibrils (TOCNs) and, montmorillonite clay (MMT) were prepared using a solution casting method with aqueous solutions. X-ray diffraction data revealed that exfoliated MMT nanoplatelets are distributed within the PULL/TOCNs/MMT film structure. Fourier-transform infrared results revealed that there might be interactions among the TOCNs, MMT and PULL matrix led to improved tensile strength, thermal stability, water barrier properties, and decrease moisture susceptibility while maintained reasonable transparency and biodegradability of the ternary PULL nanocomposites. These excellent properties of the nanocomposites clearly indicate towards a new strategy for developing high-performance PULL-based nanocomposites by using two different types of fillers with various geometric shapes and aspect ratio. This kind of ternary nanocomposite film can be broadly used in food packaging and protection as a green and biodegradable film.
采用溶液浇铸法，以水溶液为溶剂制备了普鲁兰（PULL）、醋酸丁酸纤维素纳米纤维（TOCNs）和蒙脱土纳米黏土（MMT）的纳米复合薄膜。X 射线衍射数据分析表明，插层蒙脱土纳米片层分布在 PULL/TOCNs/MMT 薄膜结构中。傅里叶变换红外光谱分析结果表明，可能存在 TOCNs、MMT 和 PULL 基质之间的相互作用，从而提高了拉伸强度、热稳定性、水阻隔性能，降低了吸湿性，同时保持了三元 PULL 纳米复合材料的合理透明度和生物降解性。这些纳米复合材料的优异性能清楚地表明，通过使用具有不同几何形状和纵横比的两种不同类型的填料，可以开发出高性能的基于 PULL 的纳米复合材料，这种三元纳米复合薄膜可以广泛应用于食品包装和保护，作为一种绿色可生物降解的薄膜。
