Transparent cellulose/polyhedral oligomeric silsesquioxane nanocomposites with enhanced UV-shielding properties

被引：29

作者：

Feng, Ye ^{[1
]}

Zhang, Jinming ^{[1
]}

He, Jiasong ^{[1
]}

Zhang, Jun ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

来源：

CARBOHYDRATE POLYMERS | 2016年 / 147卷

基金：

美国国家科学基金会;

关键词：

Cellulose nanocomposite; POSS; UV-shielding; Anti-UV aging; IONIC LIQUID; POSS POLYMERS; CELLULOSE; FILMS; FIBERS;

D O I：

10.1016/j.carbpol.2016.04.003

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The solubility of eight types of polyhedral oligomeric silsesquioxane (POSS) derivatives in an ionic liquid 1-allyl-3-methylimidazolium chloride (AmimCl) and the dispersion of POSS in cellulose matrix were examined. Only a special POSS containing both aminophenyl and nitrophenyl groups (POSS-AN, NH2:NO2= 2:6) was selected to prepare nanocomposites, because of its good solubility in AmimCl and high stability during the preparation process. POSS-AN nanoparticles were uniformly dispersed in a cellulose matrix with a size of 30-40 nm, and so the resultant cellulose/POSS-AN nanocomposite films were transparent. The mechanical properties of the films achieved a maximum tensile strength of 190 MPa after addition of 2 wt% POSS-AN. Interestingly, all of the cellulose/POSS-AN films exhibited high UV-absorbing capability. For the 15 wt% cellulose/POSS-AN film, the transmittance of UVA (315-400nm) and UVB (280-315nm) was only 9.1% and nearly 0, respectively. The UV aging and shielding experiments showed that the transparent cellulose/POSS-AN nanocomposite films possessed anti-UV aging and UV shielding properties. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：171 / 177

页数：7

共 30 条

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