Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, 4-101 Koyama-cho Minami, Tottori 680-8552, Japan.
Carbohydr Polym. 2013 Oct 15;98(1):1198-202. doi: 10.1016/j.carbpol.2013.07.033. Epub 2013 Jul 22.
Surface-deacetylated chitin nanofiber reinforced chitosan films were prepared. The nano-composite films were highly transparent of approximately 84% at 600 nm due to the nanometer-sized fillers and chitosan matrix, which were embedded in the cavities and on the rough surface of the nanofiber networks. Due to the extended crystalline structure, the nanofibers worked effectively as reinforcement filler to improve the Young's modulus and the tensile strength of the chitosan film. After 10% blending of nanofiber, these properties were increased by 65% and 94%, respectively. Moreover, thermal expansion was also significantly decreased from 35.3 to 26.1 ppm K(-1) after 10% addition of nanofibers. Surface-deacetylated chitin nanofiber and the nano-composite films showed antifungal activity against A. alternata.
制备了表面脱乙酰壳聚糖纳米纤维增强壳聚糖膜。由于纳米级填料和壳聚糖基质嵌入在纳米纤维网络的空腔和粗糙表面中，纳米复合材料薄膜在 600nm 处具有高达 84%的高透明度。由于扩展的结晶结构，纳米纤维有效地作为增强填料，提高了壳聚糖膜的杨氏模量和拉伸强度。在添加 10%纳米纤维后，这些性能分别提高了 65%和 94%。此外，在添加 10%纳米纤维后，热膨胀系数从 35.3 显著降低至 26.1ppmK(-1)。表面脱乙酰壳聚糖纳米纤维和纳米复合材料薄膜对Alternaria alternata表现出抗真菌活性。
