Preparation of fluorine-free and stable superhydrophobic paper for packaging

IF 1.7 4区农林科学 Q2 MATERIALS SCIENCE, PAPER & WOOD

Journal of Wood Chemistry and Technology Pub Date : 2022-05-14 DOI:10.1080/02773813.2022.2070646

Yang Qiu, Zhen Zhang, Shuai-Bo Liang, Yaning Miao, Chunli Yao

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引用次数: 3

Abstract

Abstract Wrapping paper has an irreplaceable role in the food industry, but the high hydrophilicity of cellulose-based wrapping paper limits its application. Here, we aim to develop a fluorine-free and stable method for preparing the superhydrophobic cellulose-based paper using KH570-modified-n-TiO2 and ε-polylysine (ε-PL) to construct a superhydrophobic surface by layer-by-layer self-assembly. The paper modified by (ε-PL/KH570-modified-n-TiO2)4 multilayers has superhydrophobic and self-cleaning properties after heat treatment. The water contact angle reaches up to 152.8° and the antibacterial rate is close to 100%. The high barrier properties to water vapor better prolong the shelf life of cherries. Therefore, the (ε-PL/KH570-modified-n-TiO2)4 multilayers modified paper can provide a new idea for food preservation. The advantage of the double-layer assembly is that even if the superhydrophobic layer of the wrapper is worn away and lost, the remaining ε-PL is still able to act as a bacterial inhibitor, ensuring that the food is not perishable.

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无氟稳定超疏水包装纸的研制

摘要包装纸在食品工业中具有不可替代的作用，但纤维素基包装纸的高亲水性限制了其应用。本研究旨在建立一种无氟、稳定的制备超疏水纤维素基纸的方法，利用kh570修饰的n- tio2和ε-聚赖氨酸(ε-PL)，通过逐层自组装构建超疏水表面。经(ε-PL/ kh570 -改性n- tio2)4多层膜改性后的纸经热处理后具有超疏水性和自清洁性能。水接触角达到152.8°，抑菌率接近100%。樱桃对水蒸气的阻隔性较好地延长了樱桃的保质期。因此，(ε-PL/ kh570 -改性-n- tio2)4多层改性纸可为食品保鲜提供新的思路。双层组装的优点是，即使包装的超疏水层被磨损和丢失，剩余的ε-PL仍然能够作为细菌抑制剂，确保食物不会变质。

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来源期刊

Journal of Wood Chemistry and Technology 工程技术-材料科学：纸与木材

CiteScore

3.70

自引率

20.00%

发文量

审稿时长

3 months

期刊介绍： The Journal of Wood Chemistry and Technology (JWCT) is focused on the rapid publication of research advances in the chemistry of bio-based materials and products, including all aspects of wood-based polymers, chemicals, materials, and technology. JWCT provides an international forum for researchers and manufacturers working in wood-based biopolymers and chemicals, synthesis and characterization, as well as the chemistry of biomass conversion and utilization. JWCT primarily publishes original research papers and communications, and occasionally invited review articles and special issues. Special issues must summarize and analyze state-of-the-art developments within the field of biomass chemistry, or be in tribute to the career of a distinguished researcher. If you wish to suggest a special issue for the Journal, please email the Editor-in-Chief a detailed proposal that includes the topic, a list of potential contributors, and a time-line.