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Two polyurethanes were prepared by the reaction of 1,6-diocyanate hexane (HDI) and two alcoholized products.
the first alcohol from propylene cross-ester alcoholization (PLA) and tetrofluoroester (DFHMA) with the solid supercrystylated acid synthesis (SO 4 2 - / ZrO) as a catalyst, and the other is a mixture of alcohol PLA and DFHMA. The composition and structure of these two polyurethanes were studied by infrared spectroscopy (FTIR) and differential scanning heat (DSC)
. Quality loss, adhesion of bacteria and algae, and water contact angles are used to evaluate the biodegradable and anti-fouling properties of both polyurethane coatings.
anti-adhesion properties of polyurethane coatings
results show that the maximum contact angle of PLIPFI reached 129 degrees, the quality loss was higher than 10% within 65 days, the mass loss was stable after 65 days, and the anti-adhesion performance of polyurethane coatings was improved. All these results suggest that puS modified with branched chain segments may have the potential to obtain anti-fouling materials that not only resist microbial adhesion but also show self-renewal.
the study was published last month: Journal of Coatings Technology and Research July 2019, Volume 16, Issue 4, pp 1055-1064.