Biobased nanocomposite coating of paper for packaging

IF 0.9 4区农林科学 Q3 MATERIALS SCIENCE, PAPER & WOOD

Nordic Pulp & Paper Research Journal Pub Date : 2024-08-27 DOI:10.1515/npprj-2024-0034

Md. Nakib Hossen, M. Mostafizur Rahman, Taslima Ferdous, Jannatun Nayeem, M. Sarwar Jahan

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Abstract

Biobased coating material is required to replace synthetic polymer-based paper coating material for a safe and clean environment. The study aimed to investigate the use of biobased nanocomposites as a coating material for paper. The biobased nanocomposite was prepared using nanocellulose, sodium alginate (SA), and bio-synthesized silver nanoparticles (AgNPs). Nanocrystalline cellulose (NCC) was produced through acid hydrolysis, followed by fractionation. The average size of the crystals was 15 nm in width and 125 nm in length. AgNPs were prepared by the reduction of AgNO3 with lignin. The synthesis of silver nanoparticles was confirmed by UV–visible and FTIR spectroscopy. SA-NCC composite coating improved the barrier and strength properties of paper. The paper with composite coating demonstrated a 29.11 % increase in tensile index in the cross direction, 20.82 % increase in the machine direction, and 77.89 % improvement in burst index at a coating weight of 1.68 g/m2. The composite-coated paper showed better air barrier and lower water absorption characteristics than sodium alginate-coated paper. The incorporation of AgNPs in the coating mixture introduced the antimicrobial activity of the paper as well.

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生物基纳米复合包装纸涂层

为了实现安全、清洁的环境，需要用生物基涂层材料来替代以合成聚合物为基础的纸张涂层材料。本研究旨在调查生物基纳米复合材料作为纸张涂层材料的使用情况。使用纳米纤维素、海藻酸钠（SA）和生物合成的银纳米粒子（AgNPs）制备了生物基纳米复合材料。纳米结晶纤维素（NCC）通过酸水解制得，然后进行分馏。晶体的平均尺寸为宽 15 纳米，长 125 纳米。AgNO3 与木质素的还原反应制备出了 AgNPs。紫外可见光谱和傅立叶变换红外光谱证实了银纳米粒子的合成。SA-NCC 复合涂层提高了纸张的阻隔性和强度。在涂层重量为 1.68 g/m2 时，涂有复合涂层的纸张横向抗张指数提高了 29.11%，机向抗张指数提高了 20.82%，爆破指数提高了 77.89%。与海藻酸钠涂布纸相比，复合涂布纸具有更好的空气阻隔性和更低的吸水性。在涂层混合物中加入 AgNPs 还提高了纸张的抗菌活性。

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来源期刊

Nordic Pulp & Paper Research Journal 工程技术-材料科学：纸与木材

CiteScore

2.50

自引率

16.70%

发文量

审稿时长

1 months

期刊介绍： Nordic Pulp & Paper Research Journal (NPPRJ) is a peer-reviewed, international scientific journal covering to-date science and technology research in the areas of wood-based biomass: Pulp and paper: products and processes Wood constituents: characterization and nanotechnologies Bio-refining, recovery and energy issues Utilization of side-streams from pulping processes Novel fibre-based, sustainable and smart materials. The editors and the publisher are committed to high quality standards and rapid handling of the peer review and publication processes. Topics Cutting-edge topics such as, but not limited to, the following: Biorefining, energy issues Wood fibre characterization and nanotechnology Side-streams and new products from wood pulping processes Mechanical pulping Chemical pulping, recovery and bleaching Paper technology Paper chemistry and physics Coating Paper-ink-interactions Recycling Environmental issues.