材料科学
聚乙烯醇
纳米复合材料
热稳定性
食品包装
纳米纤维
纳米颗粒
韧性
环境污染
化学工程
复合材料
纳米技术
化学
工程类
环境保护
食品科学
环境科学
作者
Quanwei Zhou,Lucian A. Lucia,Chao Wang,Guihua Yang,Srinivas Janaswamy,Feng Xu,Zhong Liu
标识
DOI:10.1016/j.indcrop.2022.115669
摘要
Environmental pollution of non-degradable packaging and the increasing demand for biodegradable food packaging materials are driving research on the design and development of multifunctional polyvinyl alcohol (PVA)-based films. However, binary PVA blends are not suitable to satisfy the requirements for mechanical properties, thermal stability, hydrophobicity and UV-barrier properties of food packaging materials. Herein, ternary nanocomposite films have been fabricated by incorporating sustainably renewable chitin nanofibers (ChNF) and biomass-based lignin nanoparticles (LNPs) into the biodegradable PVA. Results suggest that addition of 5 wt% ChNF and 1 wt% LNPs improves the films toughness appreciably along with superior thermal stability and surface hydrophobicity. More importantly, these nanocomposite films are transparent but could shield 95% of the UVB (275–325 nm) and UVC (200–275 nm) radiation. The outcome is deemed to aid developing novel PVA-based for biodegradable food packing materials and UV-shielding biomaterials, and it provides a way to solve the pollution of non-degradable plastics.
科研通智能强力驱动
Strongly Powered by AbleSci AI