The growing environmental concerns over non-biodegradable plastics have spurred the need for sustainable alternatives. While, natural fiber-reinforced PLA composites offer promise, they often suffer from poor moisture resistance, weak adhesion, and flammability. This study explores bamboo-kenaf/PLA hybrid composites (30:70, 50:50, 70:30 ratios) and non-hybrid variants (bamboo-PLA, kenaf-PLA) to address these limitations. The results showed that kenaf-PLA exhibits the highest moisture uptake (enhanced biodegradability) and lowest water vapor permeability (5.12 × 10−10 gs−1m−1Pa−1), ideal for moisture-sensitive packaging. The 50:50 hybrid composite achieved optimal balance with superior dimensional stability and exceptional hydrophilicity (contact angle: 61.47°), addressing PLA's adhesion challenges. All composites exhibited enhanced fire resistance compared to conventional polypropylene and polyethylene. These findings highlight the potential of bamboo-kenaf/PLA composites as sustainable materials for eco-friendly packaging and furniture applications.

中文翻译：

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竹藿纤维增强 PLA 复合材料：增强环保包装和家具的水分控制、表面润湿性和阻燃性

对不可生物降解塑料的环境问题日益严重，这刺激了对可持续替代品的需求。虽然天然纤维增强 PLA 复合材料前景广阔，但它们通常具有防潮性差、附着力弱和易燃性等问题。本研究探讨了竹-洋麻/PLA 混合复合材料（30：70、50：50、70：30 比例）和非混合变体（竹-PLA、洋麻-PLA）来解决这些限制。结果表明，洋麻-PLA 表现出最高的水分吸收率（增强的生物降解性）和最低的水蒸气渗透性（5.12 × 10-10 gs-1m-1Pa-1），非常适合湿敏性包装。50：50 的混合复合材料实现了最佳平衡，具有卓越的尺寸稳定性和出色的亲水性（接触角：61.47°），解决了 PLA 的粘合挑战。与传统的聚丙烯和聚乙烯相比，所有复合材料都表现出更强的耐火性。这些发现突出了竹荆麻/PLA 复合材料作为环保包装和家具应用可持续材料的潜力。