Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 383, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.jhazmat.2019.121123
Keywords
Cellulose nanocrystals; Polymer brush; Zinc oxide nanohybrids; Modulation; Photocatalytic degradation
Categories
Funding
- Young Elite Scientists Sponsorship Program by CAST [2018QNRC001]
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Donghua University [LK1713]
- Key Program for International S&T Innovation Cooperation Projects of China [2016YFE0131400]
- Candidates of Young and Middle Aged Academic Leader of Zhejiang Province
- Zhejiang Provincial Natural Science Key Foundation of China [LZ18E030002]
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This work presents the first fabrication of smart nonwoven fabric (DSR-CZPP) with extraordinary reversible double-stimulus responsive wettability, where carboxyl groups of cellulose nanocrystals/zinc oxide (CNC/ZnO) nanohybrids deposited on fabric surface can bond with hydroxyl group of the PDMAEMA-b-PHEMA-b-PMAAAB triblock polymer brushes that was prepared by using methyl methacrylate (HEMA), dimethylaminoethyl methacrylate (DMAEMA) and methacrylarnide-azobenzene monomer (MAAAB) via reversible addition-fragmentation chain transfer (RAFT). The peculiar reversible double-stimulus responsive wettability of the DSR-CZPP can be modulated by triggering hydrophilic/hydrophobic transitions and lipophilic./oleophobic transitions under dual-stimulations of pH and UV light irradiation. The special molecular structure of the triblock polymer brushes enabled DSR-CZPP to intelligent modulation of oil-water separation under the control of ''UV & pH double switch, meanwhile CNC/ZnO simultaneously can induce the photocatalytic degradation of organic dyes. Moreover, DSR-CZPP can have high removal ratios of various pollutants, such as metal ion (Cu2+) and toxic organic solvent (silicone oil, acetone and chloroform). This smart and multifunctional fabric shows great potentials for treating complicated polluted water from most industrial fields.
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