Fabrication of super -high transparent cellulose films with multifunctional performances via postmodification strategy

被引：27
作者：
Qi, Ying [1 ,2 ]
Lin, Shaojian [1 ,2 ]
Lan, Jianwu [1 ,2 ]
Zhan, Yifei [1 ,2 ]
Guo, Junling [1 ,2 ]
Shang, Jiaojiao [1 ,2 ]
机构：
[1] Sichuan Univ, Coll Biomass Sci & Engn, Chengdu 610065, Peoples R China
[2] Sichuan Univ, Natl Engn Lab Clean Technol Leather Manufacture, Chengdu 610065, Peoples R China
来源：
CARBOHYDRATE POLYMERS | 2021年 / 260卷
基金：
中国国家自然科学基金;
关键词：
Cellulose film; Ultraviolet-shielding; Photochromism; Super-high transmittance; Postmodification strategy; Multi-functional materials; SPIROOXAZINES;
D O I：
10.1016/j.carbpol.2021.117760
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A transparent versatile cellulose platform film was prepared from Eucalyptus pulp in this work. Based on such cellulose platform, multifunctional cellulose films with ultraviolet-shielding, photochromism, and strong me-chanical strength were fabricated via nucleophilic postmodification strategy by introducing a versatile spi-ropyran moiety into cellulose molecules. The fabricated cellulose films exhibited super-high transmittance up to 96% and performed notable ultraviolet-shielding capacity at 200-400 nm. Moreover, the photochromic per-formance of cellulose films with color changes could be clearly observed by the naked eyes, and the fluorescent blue could be excited. Besides, the tensile stress of multi-functional cellulose film was about 80 MPa, which was almost 8 times stronger than that of the commercial polyethylene film at the same thickness. It is noteworthy that these superior performances promote such a cellulose platform to be a versatile precursor for fabricating various multi-functional cellulose used in the fields of out-door coating, transparent packaging, optical screen,etc.
引用
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页数：10
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