Citation: Li Dong, Xiang-Dong Liu, Zheng-Rong Xiong, De-Kun Sheng, Yan Zhou, Yu-Ming Yang. Preparation and Characterization of UV-absorbing PVDF Membranes via Pre-irradiation Induced Graft Polymerization[J]. Chinese Journal of Polymer Science, ;2019, 37(5): 493-499. doi: 10.1007/s10118-019-2194-3 shu

Preparation and Characterization of UV-absorbing PVDF Membranes via Pre-irradiation Induced Graft Polymerization

Li Dong ^1,2 ,
Xiang-Dong Liu ¹ ,
Zheng-Rong Xiong ¹ ,
De-Kun Sheng ^1,, ,
Yan Zhou ^1,2 ,
Yu-Ming Yang ^1,,

a.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
b.
University of Science and Technology of China, Hefei 230026, China

Corresponding author: De-Kun Sheng, dksheng@ciac.ac.cn Yu-Ming Yang, ymyang@ciac.ac.cn
Received Date: 31 August 2018
Revised Date: 6 October 2018
Accepted Date: 19 October 2018
Available Online: 14 November 2018

Herein, excellent UV-absorbing poly(vinylidene fluoride) (PVDF) membranes were fabricated through the pre-irradiation induced graft polymerization method. The PVDF chains irradiated with ⁶⁰Co γ-ray were modified with the polymerizable UV absorber 2-[2-hydroxy-5-[2-(methacryloyloxy)ethyl]phenyl]-2H-benzotriazole (RUVA-93). The influences of irradiation dose and monomer concentration on the prepared PVDF-g-PRUVA-93 membranes were investigated, and the optimal condition was eventually obtained. The chemical structures of the films were studied by ¹H-NMR, FTIR, and XRD. UV light transmittance and DSC tests were used to characterize the UV-absorbing performance and thermal property of the PVDF films before and after modification. The results proved that the PRUVA-93 side chains were successfully incorporated into the PVDF main chains and the obtained PVDF-g-PRUVA-93 films possessed remarkable UV-absorbing property. The modified membrane made under the optimized experiment condition could completely block the UV light in the range of 200−387 nm. Additionally, the transmittance of the PVDF-g-PRUVA-93 film could be reduced to 0.04% in 280−320 nm, where the light irradiation could damage polymer materials most seriously.
- PVDF membrane,
- Modification,
- Irradiation,
- Grafting,
- UV-absorbing
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