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Abstract <p>The&#xa0;growing environmental and health concerns&#xa0;regarding&#xa0;non-biodegradable and toxic packaging&#xa0;materials have intensified&#xa0;the&#xa0;pursuit of sustainable alternatives. This study explores the fabrication of composite films and coatings utilizing a blend&#xa0;of Tempo-oxidized cellulose nanofiber (TOCNF) and hyaluronic acid (HA), coordinated with calcium chloride (CaCl<sub>2</sub>). The resulting composite films demonstrated&#xa0;water vapor permeability (WVP) and&#xa0;oxygen permeability (OP)&#xa0;values of 85.21&#xa0;g·μm·m<sup>-2</sup>·day<sup>–1</sup>·kPa<sup>–1</sup> and 9.72&#xa0;mL·μm·m<sup>–2</sup>·day<sup>–1</sup>·atm<sup>–1</sup>, respectively.&#xa0;When&#xa0;the film was transferred&#xa0;onto kraft paper, the coated paper exhibited 12/12 kit rating for oil resistance, thereby effectively impeding the penetration of&#xa0;hot oil&#xa0;at 230&#xa0;°C. Moreover, the films exhibited excellent transparency, mechanical strength, and thermal stability. This research&#xa0;contributes to advancing the field of&#xa0;sustainable packaging by&#xa0;introducing a non-fluorinated and hot-oil resistant bio-based film material with&#xa0;potential&#xa0;for&#xa0;industrial applications.</p> Graphical Abstract <p></p>

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Enhancing gas barrier properties and oil resistance in packaging: a study on TOCNF/HA composite films

  • 期刊论文

  • 发表日期：

    2025年11月4日

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  • Yijie Zou,
  • Lihong Zhao,
  • Junli Ren

摘要

Abstract

The growing environmental and health concerns regarding non-biodegradable and toxic packaging materials have intensified the pursuit of sustainable alternatives. This study explores the fabrication of composite films and coatings utilizing a blend of Tempo-oxidized cellulose nanofiber (TOCNF) and hyaluronic acid (HA), coordinated with calcium chloride (CaCl2). The resulting composite films demonstrated water vapor permeability (WVP) and oxygen permeability (OP) values of 85.21 g·μm·m-2·day–1·kPa–1 and 9.72 mL·μm·m–2·day–1·atm–1, respectively. When the film was transferred onto kraft paper, the coated paper exhibited 12/12 kit rating for oil resistance, thereby effectively impeding the penetration of hot oil at 230 °C. Moreover, the films exhibited excellent transparency, mechanical strength, and thermal stability. This research contributes to advancing the field of sustainable packaging by introducing a non-fluorinated and hot-oil resistant bio-based film material with potential for industrial applications.

Graphical Abstract