木质素
纤维素
纳米颗粒
极限抗拉强度
材料科学
接触角
热稳定性
化学工程
复合数
生物降解
生物塑料
透氧性
纳米纤维素
有机化学
再生纤维素
复合材料
化学
纳米技术
氧气
工程类
生态学
生物
酶
作者
Rui Tian,Chao Wang,Weikun Jiang,Srinivas Janaswamy,Guihua Yang,Xingxiang Ji,Gaojin Lyu
出处
期刊:Small
[Wiley]
日期:2024-03-26
标识
DOI:10.1002/smll.202309651
摘要
The scientific community is pursuing significant efforts worldwide to develop environmentally viable film materials from biomass, particularly transparent, high-performance regenerated cellulose (RC) films, to replace traditional plastics. However, the inferior mechanical performance and hydrophilic nature of RC films are generally not suitable for use as a substitute for plastics in practical applications. Herein, lignin homogenization is used to synthesize high-performance composite films. The esterified lignin nanoparticles (ELNPs) with dispersible and binding advantages are prepared through esterification and nanometrization. In the presence of ELNPs, RC films exhibit a higher tensile strength (110.4 MPa), hydrophobic nature (103.6° water contact angle, 36.6% water absorption at 120 min, and 1.127 × 10-12 g cm cm-2 s-1 Pa-1 water vapor permeability), and exciting optical properties (high visible and low ultraviolet transmittance). The films further display antioxidant activity, oxygen barrier ability, and thermostability. The films completely biodegrade at 12 and 30% soil moisture. Overall, this study offers new insights into lignin valorization and regenerated cellulose composite films as novel bioplastic materials.
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