浙江农林大学学报2026，Vol.43Issue(3)：457-466,10.DOI:10.11833/j.issn.2095-0756.20250375
生物基CNC/PCNF/LNPs柔性虹彩薄膜的疏水抗紫外性能
Hydrophobic and UV-resistant properties of biobased CNC/PCNF/LNPs flexible iridescent films
摘要
Abstract
[Objective]This study aims to prepare a fully biobased composite film with flexible iridescent cellulose nanocrystals(CNC)/phosphorylated cellulose nanofibers(PCNF)/lignin nanoparticles(LNPs),and systematically examine the influence of LNPs mass fraction on the optical properties,morphology,mechanical properties,humidity sensitivity,thermal stability,hydrophobicity,and ultraviolet shielding properties of the composite film.[Method]Taking CNC as the structural matrix,PCNF as the reinforcing phase,and LNPs as the functional component,a two-step method was employed to prepare a fully biobased,flexible,and iridescent CNC/PCNF/LNPs composite film.[Result]The structural color and the maximum reflection wavelength(λmax)of the film exhibited a significant redshift with increasing LNPs mass fraction.Hydrophobicity was enhanced,and the water contact angle increased from 39.0° to 76.1°,while humidity sensitivity decreased s lightly.Thermal stability improved,with the maximum thermal decomposition temperature rising from 240℃to 261℃.Ultraviolet shielding performance was enhanced,and the CNC/P20/L2.0 film(where P20 represented the mass fraction of PCNF relative to CNC as 20.0%,and L2.0 represented the mass fraction of LNPs relative to CNC as 2.0%)achieved UV absorption rates of 95.8%in the ultraviolet region(UV,200-400 nm)and 99.2%in the mid wave UV region(UVB,280-320 nm).[Conclusion]The mass fraction of LNPs can affect the optical properties,morphology,humidity sensitivity,thermal stability,hydrophobicity,and ultraviolet shielding properties of the composite film,but it has little effect on the mechanical properties.关键词
纤维素纳米晶体/磷酸化纤维素纳米纤丝/木质素纳米微球/全生物基/结构色Key words
cellulose nanocrystals/phosphorylated cellulose nanofibrils/lignin nanomicrospheres/fully biobased/structural colors分类
数理科学引用本文复制引用
许诺,徐蕴哲,陶文锭,马帆峰,李倩,吴强..生物基CNC/PCNF/LNPs柔性虹彩薄膜的疏水抗紫外性能[J].浙江农林大学学报,2026,43(3):457-466,10.基金项目
浙江省"尖兵领雁"科技项目(2025C02204) （2025C02204）
