Feasible Detoxification Coating Material for Chemical Warfare Agents Using Poly(methyl methacrylate)-Branched Poly(ethyleneimine) Copolymer and Metal-Organic Framework Composites

Authors
Seo, Jin YoungChoi, Min HyukLee, Bo WooLee, Jung-HyunShin, SeunghanCho, SanghoCho, Kie YongBaek, Kyung-Youl
Issue Date
2022-11
Publisher
American Chemical Society
Citation
ACS Applied Materials & Interfaces, v.14, no.44, pp.50246 - 50255
Abstract
Defense against chemical warfare agents (CWAs) is regarded as a top priority for the protection of humanity, but it still depends on physical protection with severe limitations such as residual toxicity and post-treatment requirement. In this study, a strategically designed functional polymeric substrate was composited with a metal-organic framework catalyst to remove toxicity immediately. A series of PMMA-BPEI copolymers exhibited high processability as a coating and accelerated the catalytic activity of Zr(IV)-based metal-organic framework catalysts (UiO-66). Among them, PMB12_40 composite coating on a cotton fabric, containing a PMMA-BPEI copolymer (PMMA/BPEI = 1/2) and 40% of UiO-66 catalyst, can efficiently decompose nerve agent simulants (methyl-paraoxon) under both liquid phase (t1/2 = 0.14 h) and humidified (t1/2 = 4.8 h) conditions. Moreover, a real agent, GD, was decomposed 100% by PMB12_40 in 4 h at 25 degrees C and 65% relative humidity. On the basis of superior catalytic activity, the PMB composites are anticipated to be a potential material for active chemical protection coating.
Keywords
NERVE AGENTS; DEGRADATION; DESTRUCTION; HYDROLYSIS; POLYMER; PROTECTION; SURFACE; FACILE; WATER; surface coating material; chemical warfare agent; metal-organic framework (MOF); nerve agent; polymer composite
ISSN
1944-8244
URI
https://pubs.kist.re.kr/handle/201004/114405
DOI
10.1021/acsami.2c15961
Appears in Collections:
KIST Article > 2022
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