期刊
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
卷 167, 期 -, 页码 1-9出版社
ELSEVIER
DOI: 10.1016/j.ijbiomac.2020.11.164
关键词
Cellulose acetate (CA); Metal-organic framework; UV-shielding; Mechanical property; Nanocomposite film
资金
- National Natural Science Foundation of China [21504018, 21676062, 21501033]
- Natural Science Foundation of Guangxi Province [2018GXNSFAA281131, 2020GXNSFAA159016]
- One Thousand Young and Middle-Aged College and University Backbone Teachers Cultivation Program of Guangxi (2019)
Flower-like Cu-MOF nanoparticles were successfully incorporated into cellulose acetate matrix to prepare functional nanocomposite films, showing improved mechanical properties, surface hydrophobicity, and UV-shielding capabilities while maintaining high transparency and biocompatibility.
Flower-like metal-organic frameworks (Cu-MOF) nanoparticles are successfully synthesized and incorporated into cellulose acetate (CA) matrix to prepare CA-based functional nanocomposite films via a simple solutioncasting method. The effect of the incorporation of flower-like Cu-MOF on the morphological, mechanical, thermal, surface wettability, water vapor barrier, cytotoxicity, photostability and UV-shielding properties of CA films is fully investigated. Results reveal that the flower-like Cu-MOF has good compatibility with CA, providing uniform and compact nanocomposite films. The as-prepared nanocomposite films show improved mechanical properties, surface hydrophobicity, water vapor barrier ability compared to neat CA film, and exhibit super UV-shielding capability through the entire UV regions meanwhile retaining a high visible transparency. Moreover, the high transparency and UV-shielding ability of the nanocomposite films can be still maintained even after continuous UV-light (365 nm) irradiation for 12 h. In addition, MTT cytotoxicity assays towards normal human liver cells (HL-7702) reveal high cell viability (over 80%) and good biocompatibility for the CA/Cu-MOF nanocomposite films. These results indicate that the CA/Cu-MOF nanocomposite films with obviously improved physical and functional performances hold significant potential for transparent packaging and UV-protection applications. (C) 2020 Elsevier B.V. All rights reserved.
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