Mechanical properties and decomposition performance of peelable coating containing UiO-66 catalyst and waterborne silane-terminated polyurethane dispersions
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An easily peelable coating was prepared using silane-terminated polyurethane dispersions (SPUDs) and UiO-66 catalyst (a zirconium(IV)-based metal–organic framework), to capture and decompose the nerve agent simulant, methyl paraoxon (MPO), at room temperature. SPUDs were used as the binder. The peel strength of the SPUD film containing UiO-66 decreased with increasing UiO-66 content, and the film with 40 wt% UiO-66 could not be easily peeled off. In contrast, the SPUD/PVB/UiO-66 peelable coating film could be easily peeled off. With increasing UiO-66 content, the Young’s moduli of the SPUD/UiO-66 and SPUD/PVB/UiO-66 coating films gradually increased, while the elongation decreased. The increase in the glass transition temperature was less than approximately 5%, depending on the UiO-66 content of the SPUD/UiO-66 film. Two peaks of tan δ appeared for the SPUD/PVB/UiO-66 coating film. As the UiO-66 content increased, the second peak shifted to the right. This could be attributed to the bond strength between the mixed polymeric binder and the nanoparticles. Furthermore, MPO decomposition by the SPUD/PVB/UiO-66 coating film increased with increasing UiO-66 content. These findings suggest the possibility of the development of a peelable coating film for the capture and decomposition of MPO.
Gel permeation chromatography
Glass transition temperature
Silane-terminated polyurethane dispersion
This work was supported by the National Research Council of Science and Technology (NST) grant by the Korean government (MSIP) (No. CMP-16-04-KITECH).
K-M Kim, H-J Kim, and S Shin designed the experiments. H-W Park, G-S Shim, and G Chae carried out the measurements. S-W Jang and J-H Lee analyzed the data. K-M Kim wrote the manuscript.
- 12.Cho KY, Seo JY, Kim H-J et al (2019) Facile control of defect site density and particle size of UiO-66 for enhanced hydrolysis rates: insights into feasibility of Zr(IV)-based metal–organic framework (MOF) catalysts. Appl Catal B Environ 245:635–647. https://doi.org/10.1016/j.apcatb.2019.01.033 CrossRefGoogle Scholar
- 13.Natali I, Carretti E, Angelova L et al (2011) Structural and mechanical properties of “peelable” organoaqueous dispersions with partially hydrolyzed poly(vinyl acetate)-borate networks: applications to cleaning painted surfaces. Langmuir 27:13226–13235. https://doi.org/10.1021/la2015786 CrossRefGoogle Scholar
- 15.Shirai M, Bamba T, Hayashi K et al (2000) Sheet for protecting paint filmGoogle Scholar
- 16.Ozeki K, Wada T, Ito K et al (1982) Peelable film-forming urethane/isocyanate paintsGoogle Scholar
- 29.Moghaddam ZS, Kaykhaii M, Khajeh M, Oveisi AR (2018) Synthesis of UiO-66-OH zirconium metal–organic framework and its application for selective extraction and trace determination of thorium in water samples by spectrophotometry. Spectrochim Acta A Mol Biomol Spectrosc 194:76–82. https://doi.org/10.1016/j.saa.2018.01.010 CrossRefGoogle Scholar
- 31.Blaine SJ, Wilson KK (1996) Protective solvent free liquid masking compounds and related method. US Patent 5,494,702, 27 Feb, 1996Google Scholar
- 32.Muller H-P, Gruttmann H, Casselmann H, et al (1999) Cosolvent-free aqueous, anionic polyurethane dispersions and their use as peelable coatings. US Patent 5,965,195, 12 Oct, 1999Google Scholar
- 33.Salamon PA 54) Temporary protective coatings for precision surfaces. 14Google Scholar
- 34.Polymeric peel-off coating compositions and methods of use thereof. Google Patents US6124044A. https://patents.google.com/patent/US6124044A/en. Accessed 24 May 2019
- 35.Adhesion performance of PSA–clay nano-composites by the in situ polymerization and mechanical blending. ScienceDirect. https://www.sciencedirect.com/science/article/pii/S0143749613001395. Accessed 2 July 2019