CONACYT-CIQA, Blvd. Enrique Reyna Hermosillo 140, Saltillo, Coahuila 25294, Mexico.
Centro de Investigación en Química Aplicada (CIQA), Blvd. Enrique Reyna Hermosillo 140, Saltillo, Coahuila 25294, Mexico.
Carbohydr Polym. 2021 Jan 1;251:117009. doi: 10.1016/j.carbpol.2020.117009. Epub 2020 Aug 30.
Starch is an excellent alternative to produce packaging materials, however, due to its high hydrophilicity, it is necessary to mix it with other polymers. Chitosan (CTS) is a polymer extracted from shrimp shells and crabs, which can be used to make biodegradable materials. The principal component of biodegradable was corn starch and chitosan, the copolymer pluronic F127 was incorporated in several concentrations and its effect on the water vapor barrier, morphological, thermal, and mechanical properties of the films was evaluated, because its incorporation in the formulation of biodegradable materials could increase its hydrophobicity. The surface of starch-chitosan composite films obtained was more homogeneous and smoother with the increase in the content of pluronic F127. The %S and WVP of the starch-chitosan films decreased from 42 to 3%, and 21 × 10 to 3 × 10 g. ms Pa, respectively, with the incorporation of pluronic from 3%, which makes these materials a good alternative for product packaging.
淀粉是一种极好的包装材料替代品，然而，由于其高亲水性，需要将其与其他聚合物混合。壳聚糖（CTS）是一种从虾壳和螃蟹中提取的聚合物，可用于制造可生物降解材料。可生物降解材料的主要成分是玉米淀粉和壳聚糖，共聚物 Pluronic F127 以几种浓度掺入，评估其对薄膜水蒸气阻隔性、形态、热和机械性能的影响，因为其掺入可生物降解材料的配方中可以增加其疏水性。随着 Pluronic F127 含量的增加，淀粉-壳聚糖复合薄膜的表面变得更加均匀和平滑。淀粉-壳聚糖薄膜的 %S 和 WVP 分别从 42%和 21×10 降至 3%和 3×10 g.ms.Pa，这使得这些材料成为产品包装的良好替代品。
