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首页> 外文期刊>Journal of Applied Polymer Science >Composition optimization of polyvinyl alcohol/rice starch/silk fibroin-blended films for improving its eco-friendly packaging properties
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Composition optimization of polyvinyl alcohol/rice starch/silk fibroin-blended films for improving its eco-friendly packaging properties

机译：聚乙烯醇/大米淀粉/丝素蛋白共混薄膜的成分优化，以改善其环保包装性能

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摘要

Biopolymers obtained from renewable sources have been exploited in developing biomaterials with eco-friendly properties. Most biopolymers have some limitations because of their poor mechanical properties, high water solubility, or low transparencies. In this study, some biopolymers, that is, silk fibroin (SF) and rice starch (RS) were used as starting materials together with polyvinyl alcohol (PVA) as a film-former for preparing novel eco-friendly films. The film preparations were done by solution casting with two different sequences of blending and the film compositions were optimized. Results from UV, SEM, and film properties testing on mechanical properties, degree of swelling, water solubility, and also oxygen permeability indicated that all film properties depended on their compositions and order of blending. The PVA/RS film obtained is transparent with good mechanical properties and low water solubility. The addition of SF increases the permeability of oxygen and also the degradability of the films.
机译：从可再生资源获得的生物聚合物已被用于开发具有环保特性的生物材料。大多数生物聚合物由于其较差的机械性能，高水溶性或低透明性而具有一定的局限性。在这项研究中，一些生物聚合物，即丝素蛋白（SF）和大米淀粉（RS）与聚乙烯醇（PVA）一起用作原料，制备了新型环保薄膜。通过溶液流延和两种不同的混合顺序进行薄膜制备，并优化薄膜组成。 UV，SEM和膜性能测试的机械性能，溶胀度，水溶性和透氧性的结果表明，所有膜性能均取决于其组成和混合顺序。获得的PVA / RS膜是透明的，具有良好的机械性能和低的水溶性。 SF的添加增加了氧气的渗透性以及膜的降解性。

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