Novel transparent lignin/epoxy resin nanocomposite film development with enhanced UV resistance performance,Journal of Applied Polymer Science

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Novel transparent lignin/epoxy resin nanocomposite film development with enhanced UV resistance performance
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2024-02-22 , DOI: 10.1002/app.55307
Muhammad Abu Taher _{1,

2} , K. M. Faridul Hasan ₃ , Jin Zhu ₁

Affiliation

The increased importance of nanostructured lignin exhibits a plethora of multifunctional groups, making it a highly adaptable material basis with significant potential for use in the rapidly expanding composite sector. Initially, lignin nanoparticles (NPs) were incorporated into epoxy networks via an in situ polymerization process where isophorone diamine functioned as a hardener to produce lignin/epoxy resin nanocomposites (lignin@TN). These lignin@TN exhibit promising characteristics, enhancing UV-blocking efficiency (35.69% at 404 nm with 3.72 wt% lignin) in transparent nanocomposite films while simultaneously improving mechanical properties compared with neat epoxy resin. Adding lignin nanoparticles to epoxy nanocomposites boost up tensile strength by an impressive 24% compared with the pristine epoxy but it affected the glass transition temperature (T_g). After all, this study has opened new possibilities for utilizing renewable, sustainable, and economic lignin feedstocks as a potential ingredient for reinforcing with thermoset polymers like epoxy.

中文翻译：

新型透明木质素/环氧树脂纳米复合薄膜的开发，具有增强的抗紫外线性能

纳米结构木质素的重要性日益增加，具有大量的多功能基团，使其成为适应性强的材料基础，在快速扩张的复合材料领域具有巨大的应用潜力。最初，木质素纳米颗粒（NP）通过原位聚合过程掺入环氧树脂网络，其中异佛尔酮二胺充当硬化剂，生产木质素/环氧树脂纳米复合材料（木质素@TN）。这些木质素@TN表现出有前途的特性，提高了透明纳米复合材料薄膜的紫外线阻挡效率（404 nm处为35.69％，木质素含量为3.72 wt％），同时与纯环氧树脂相比提高了机械性能。与原始环氧树脂相比，在环氧纳米复合材料中添加木质素纳米粒子，拉伸强度提高了 24%，令人印象深刻，但它影响了玻璃化转变温度 ( T _g )。毕竟，这项研究为利用可再生、可持续和经济的木质素原料作为环氧树脂等热固性聚合物增强的潜在成分开辟了新的可能性。

更新日期：2024-02-22

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