Enhancing the water resistance and functional properties of chitosan-based films using a hydrophobic deep eutectic solvent.

IF 7.7 1区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

International Journal of Biological Macromolecules Pub Date : 2025-05-28 DOI:10.1016/j.ijbiomac.2025.144776

Zixing Zhang, Yuxin Xu, Yun Hu

{"title":"Enhancing the water resistance and functional properties of chitosan-based films using a hydrophobic deep eutectic solvent.","authors":"Zixing Zhang, Yuxin Xu, Yun Hu","doi":"10.1016/j.ijbiomac.2025.144776","DOIUrl":null,"url":null,"abstract":"To enhance the mechanical properties and water resistance of chitosan (CS) films while imparting additional functionalities, this study incorporated a hydrophobic deep eutectic solvent (DES) composed of menthol and pyruvic acid into the CS matrix. At an optimal DES content of 15 %, compared to pure CS films, the elongation at break increased by 77 %, while swelling degree and solubility decreased by 94.44 % and 60.71 %, respectively. The lowest water vapor permeability (11.55 × 10-11 g·m-1·s-1·Pa-1) demonstrated enhanced moisture barrier properties. These improvements were attributed to the synergistic effects of hydrogen bonding and ionic crosslinking, reinforcing the network structure and restricting water penetration while maintaining molecular mobility. The films also exhibited excellent ultraviolet-shielding (ultraviolet C transmittance of 3 %) with high transparency, making them suitable for light-sensitive packaging. Additionally, they achieved complete biodegradation in soil within 10 weeks, highlighting their potential as sustainable alternatives to petroleum-based plastics. This study presents a novel approach to enhancing bio-based packaging materials through hydrophobic DES, expanding their applications in sustainable food and pharmaceutical packaging.","PeriodicalId":333,"journal":{"name":"International Journal of Biological Macromolecules","volume":" ","pages":"144776"},"PeriodicalIF":7.7000,"publicationDate":"2025-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Biological Macromolecules","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.ijbiomac.2025.144776","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"BIOCHEMISTRY & MOLECULAR BIOLOGY","Score":null,"Total":0}

引用次数: 0

Abstract

To enhance the mechanical properties and water resistance of chitosan (CS) films while imparting additional functionalities, this study incorporated a hydrophobic deep eutectic solvent (DES) composed of menthol and pyruvic acid into the CS matrix. At an optimal DES content of 15 %, compared to pure CS films, the elongation at break increased by 77 %, while swelling degree and solubility decreased by 94.44 % and 60.71 %, respectively. The lowest water vapor permeability (11.55 × 10^-11 g·m^-1·s^-1·Pa^-1) demonstrated enhanced moisture barrier properties. These improvements were attributed to the synergistic effects of hydrogen bonding and ionic crosslinking, reinforcing the network structure and restricting water penetration while maintaining molecular mobility. The films also exhibited excellent ultraviolet-shielding (ultraviolet C transmittance of 3 %) with high transparency, making them suitable for light-sensitive packaging. Additionally, they achieved complete biodegradation in soil within 10 weeks, highlighting their potential as sustainable alternatives to petroleum-based plastics. This study presents a novel approach to enhancing bio-based packaging materials through hydrophobic DES, expanding their applications in sustainable food and pharmaceutical packaging.

查看原文本刊更多论文

疏水深共晶溶剂增强壳聚糖基膜的耐水性和功能性能。

为了提高壳聚糖（CS）薄膜的力学性能和耐水性，同时赋予其额外的功能，本研究将一种由薄荷醇和丙酮酸组成的疏水深度共晶溶剂（DES）加入到CS基体中。当DES含量为15 %时，与纯CS膜相比，断裂伸长率提高了77 %，溶胀度和溶解度分别降低了94.44 %和60.71 %。水蒸气渗透率最低（11.55 × 10-11 g·m-1·s-1·Pa-1），具有较好的防潮性能。这些改善是由于氢键和离子交联的协同作用，增强了网络结构，限制了水的渗透，同时保持了分子的流动性。薄膜还具有优异的紫外线屏蔽性能（紫外线C透过率为3 %），具有高透明度，适用于光敏包装。此外，它们在10 周内就在土壤中实现了完全的生物降解，突出了它们作为石油基塑料的可持续替代品的潜力。本研究提出了一种通过疏水DES增强生物基包装材料的新方法，扩大了其在可持续食品和药品包装中的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

International Journal of Biological Macromolecules 生物-生化与分子生物学

CiteScore

13.70

自引率

9.80%

发文量

2728

审稿时长

64 days

期刊介绍： The International Journal of Biological Macromolecules is a well-established international journal dedicated to research on the chemical and biological aspects of natural macromolecules. Focusing on proteins, macromolecular carbohydrates, glycoproteins, proteoglycans, lignins, biological poly-acids, and nucleic acids, the journal presents the latest findings in molecular structure, properties, biological activities, interactions, modifications, and functional properties. Papers must offer new and novel insights, encompassing related model systems, structural conformational studies, theoretical developments, and analytical techniques. Each paper is required to primarily focus on at least one named biological macromolecule, reflected in the title, abstract, and text.