Abstract

Biobased lipoic acid (LA) can be used as a plasticizer and combine with ethyl cellulose (EC) to form ethyl cellulose supramolecular composite films. The morphology, hydrophilic performance, thermal stability and mechanical properties of the composite films were investigated. The introduction of LA can significantly improve the flexibility and processability of ethyl cellulose films because LA can weaken both hydrogen bonding and hydrophobic interaction in EC chains. The elongation at break of EC composite films can be increased by 5.5~11.1 times when the LA content is 20~50%. In addition, comparative experiments and molecular dynamic simulations were performed to explain the superiority of LA as a plasticizer for EC films.

Graphic abstract

中文翻译：

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一种天然定制的小分子，用于制备乙基纤维素超分子复合膜

摘要

生物基硫辛酸（LA）可用作增塑剂，并与乙基纤维素（EC）结合形成乙基纤维素超分子复合膜。研究了复合膜的形貌，亲水性能，热稳定性和力学性能。LA的引入可以显着改善乙基纤维素膜的柔韧性和可加工性，因为LA可以削弱EC链中的氢键和疏水相互作用。当LA含量为20〜50％时，EC复合膜的断裂伸长率可提高5.5〜11.1倍。此外，进行了对比实验和分子动力学模拟，以解释LA作为EC膜增塑剂的优越性。

图形摘要