Polymer Institute, West Pomeranian University of Technology, ul. Pulaskiego 10, 70-322 Szczecin, Poland.
Institute of Organic Chemical Technology, West Pomeranian University of Technology, ul. Pulaskiego 10, 70-322 Szczecin, Poland.
Carbohydr Polym. 2015 Sep 5;128:82-9. doi: 10.1016/j.carbpol.2015.04.023. Epub 2015 Apr 23.
Preparation of novel carboxymethyl starch (CMS)-based biodegradable films with calcium montmorillonite has been described. The biocomposites were obtained by casting method, glycerol and citric acid were used as plasticizer and crosslinking agent, respectively. The effect of calcium montmorillonite (MMT-Ca) on hydrophilicity (moisture absorption, solubility in water as well as contact angle measurements) was evaluated. Moreover, thermomechanical and mechanical properties of nanocomposites were determined. For all the systems tested intercalated structure of MMT-Ca was revealed, however the most efficient clay platelets dispersion was noted for film containing 5 wt.% MMT-Ca. Such biodegradable CMS/MMT-Ca films exhibiting relatively good mechanical properties could find application in controlled delivery systems as well as in agriculture for seed tapes production where hydrophilicity of polymer carrier is strongly advantageous.
新型羧甲基淀粉（CMS）基可生物降解膜与钙蒙脱石的制备方法已经描述。通过浇注法获得生物复合材料，甘油和柠檬酸分别用作增塑剂和交联剂。评价了钙蒙脱石（MMT-Ca）对亲水性（吸湿性、水中溶解度和接触角测量）的影响。此外，还测定了纳米复合材料的热机械和机械性能。对于所有测试的体系，都揭示了 MMT-Ca 的插层结构，但在含有 5wt%MMT-Ca 的薄膜中，粘土片层的分散效果最佳。这种具有相对良好机械性能的可生物降解 CMS/MMT-Ca 薄膜可以在控制释放系统以及农业中用于生产种子带，在农业中聚合物载体的亲水性具有很大的优势。
