Poly(vinyl alcohol)/oxidized cellulose nanofibril composite films with high nanofiller content for enhanced packaging applications

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry Pub Date : 2025-01-11 DOI:10.1016/j.jiec.2025.01.016

Khadija Trigui , Albert Magnin , Jean-Luc Putaux , Sami Boufi

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引用次数: 0

Abstract

The performance of poly(vinyl alcohol) (PVA) thin composite films incorporating 10–90 wt% cellulose nanofibrils (CNFs) prepared by TEMPO-mediated or periodate oxidation (T-CNFs and P-CNFs, respectively) was evaluated. The tensile strength and Young’s modulus significantly increased with increasing CNF content while the elongation at break decreased. Differential scanning calorimetry revealed that the crystallization of PVA was inhibited over 50 wt% T-CNFs and 30 wt% P-CNFs. PVA/T-CNF films lacked barrier properties without additional compression while PVA/P-CNF films exhibited barrier capabilities without post-pressure treatment, which was attributed to the shorter P-CNFs. Oxygen transmission rate tests confirmed that the barrier properties were preserved up to 50 wt% CNFs, correlating with the inhibition of PVA crystallization, while the film transparency increased with increasing CNF content. Aqueous PVA/CNF suspensions with a high CNF content can thus be used as thin layers on polymer or paper-based substrates to enhance their barrier properties, mechanical strength, and thermomechanical stability, with applications in environmentally friendly packaging.

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聚乙烯醇/氧化纤维素纳米纤维复合薄膜，具有高纳米填料含量，用于增强包装应用

通过tempo介导或高酸盐氧化（分别为T-CNFs和P-CNFs）制备的含有10-90 wt%纤维素纳米纤维（CNFs）的聚乙烯醇（PVA）薄膜的性能进行了评估。随着CNF含量的增加，拉伸强度和杨氏模量显著增加，断裂伸长率降低。差示扫描量热法发现，当T-CNFs含量超过50%和P-CNFs含量超过30%时，PVA的结晶受到抑制。PVA/T-CNF薄膜在没有额外压缩的情况下缺乏屏障性能，而PVA/P-CNF薄膜在没有加压处理的情况下表现出屏障能力，这归因于较短的P-CNF。氧透射率测试证实，当CNF含量达到50 wt%时，膜的阻隔性能仍保持不变，这与抑制PVA结晶有关，而膜的透明度随着CNF含量的增加而增加。因此，具有高CNF含量的水性PVA/CNF悬浮液可以用作聚合物或纸质基基材上的薄层，以增强其阻隔性能、机械强度和热机械稳定性，并应用于环保包装。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Industrial and Engineering Chemistry 工程技术-工程：化工

CiteScore

10.40

自引率

6.60%

发文量

639

审稿时长

29 days

期刊介绍： Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.