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Metal–organic framework (UiO‐66)‐dispersed polyurethane composite films for the decontamination of methyl paraoxon
Author(s) -
Kim Kiyeon,
Seo Jin Young,
Baek KyungYoul,
Bae JinYoung,
Shin Seunghan
Publication year - 2019
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5856
Subject(s) - polyurethane , composite number , materials science , chemical engineering , human decontamination , polyol , decomposition , paraoxon , ultimate tensile strength , slurry , composite material , nuclear chemistry , chemistry , organic chemistry , waste management , engineering , acetylcholinesterase , enzyme
Polyurethane (PU) composite films containing UiO‐66 were prepared for the decontamination of methyl paraoxon (MPO), an organophosphate‐type nerve agent simulant. Waterborne PU dispersions were synthesized by changing the type of polyol to improve the miscibility with UiO‐66. Depending on the size of the polyol, the PU films had different surface free energy, flexibility and compatibility with UiO‐66. UiO‐66 was well dispersed in PU films when the flexibility of the films increased. The tensile strength of the UiO‐66/PU composite films gradually increased from 7.5 to 11.3 MPa with increasing UiO‐66 content, but the elongation decreased from 781 to 120%. The decomposition of MPO by the UiO‐66/PU composite films increased with an increase of the UiO‐66 content and hydrolysis time. In the case of the 21.2 wt% UiO‐66/PU composite film, 48% of MPO was decomposed within 3 h. This was similar to the decomposition when using a UiO‐66 slurry (52%) under the same decomposition conditions. Unlike the UiO‐66 slurry, the 21.2 wt% UiO‐66/PU composite film maintained a similar MPO decomposition performance after 10 repeated experiments. © 2019 Society of Chemical Industry