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Preparation and evaluation of degradable polyurethane with low surface energy for marine antifouling coating

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Abstract

Two polyurethanes were prepared through the reaction of 1,6-diisocyanatohexane (HDI) with two kinds of alcoholates. The first alcoholate was synthesized from alcoholized lactide (PLA) and dodecafluoroheptyl methacrylate (DFHMA) with the solid super acid (SO42−/ZrO) acting as the catalyst, and the other alcoholate was a mixture of PLA and DFHMA. The composition and structure of these two polyurethanes were investigated by infrared spectroscopy (FTIR) and differential scanning calorimetry (DSC). The mass loss, attachment of bacteria and algae, and the water contact angle were used to evaluate the degradable and antifouling performance of the two polyurethane coatings. The results showed that the maximum contact angle of PLIPFI reached 129°, its mass loss was higher than 10% in 65 days, and after 65 days, the mass loss appeared to be stable, and the antiadhesion performance of the polyurethanes coatings was also enhanced. All of these results indicated that the PU modified with a graft segment may be promising for obtaining antifouling materials that not only can resist the adhesion of microorganisms but also show self-renewal.

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Acknowledgments

The authors are grateful for the financial supports of the horizontal projects (zzzz002023317 and zzzz002023301). This study was also supported by the Analysis and Testing Center of Hainan University.

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Authors and Affiliations

  1. School of Materials and Chemical Engineering/State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, No. 58, Renmin Avenue, Haikou, 570228, Hainan Province, People’s Republic of China

    Yue Xu, Guoqing Wang & Zhuolin Xie

  2. College of Ocean/State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, No. 58, Renmin Avenue, Haikou, 570228, Hainan Province, People’s Republic of China

    Aiming Wang

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  1. Yue Xu
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  2. Guoqing Wang
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  3. Zhuolin Xie
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  4. Aiming Wang
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Correspondence to Guoqing Wang.

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Xu, Y., Wang, G., Xie, Z. et al. Preparation and evaluation of degradable polyurethane with low surface energy for marine antifouling coating. J Coat Technol Res 16, 1055–1064 (2019). https://doi.org/10.1007/s11998-018-00180-4

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  • DOI: https://doi.org/10.1007/s11998-018-00180-4

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