SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2021, Vol. 34 ›› Issue (6): 299-306.DOI: 10.1016/j.cjche.2020.11.007

• Resources and Environmental Technology • 上一篇    下一篇

Synthesis and characterization of caprolactone based polyurethane with degradable and antifouling performance

Abid Ali1, Lina Song1, Jiankun Hu2, Jingxian Jiang1, Qingqing Rao1, Muhammad Shoaib1, Shah Fahad1, Yongjie Cai1, Xiaoli Zhan1,2, Fengqiu Chen1, Qinghua Zhang1,2   

  1. 1 College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering, Manufacture Technology, Zhejiang University, Hangzhou 310027, China;
    2 Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
  • 收稿日期:2020-07-22 修回日期:2020-11-14 出版日期:2021-06-28 发布日期:2021-08-30
  • 通讯作者: Xiaoli Zhan, Qinghua Zhang
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (21776249, 21878267, and 21576236).

Synthesis and characterization of caprolactone based polyurethane with degradable and antifouling performance

Abid Ali1, Lina Song1, Jiankun Hu2, Jingxian Jiang1, Qingqing Rao1, Muhammad Shoaib1, Shah Fahad1, Yongjie Cai1, Xiaoli Zhan1,2, Fengqiu Chen1, Qinghua Zhang1,2   

  1. 1 College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering, Manufacture Technology, Zhejiang University, Hangzhou 310027, China;
    2 Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
  • Received:2020-07-22 Revised:2020-11-14 Online:2021-06-28 Published:2021-08-30
  • Contact: Xiaoli Zhan, Qinghua Zhang
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (21776249, 21878267, and 21576236).

摘要: In this work, a degradable polyurethane composed of caprolactone (CL) and L-Lactide (LLA) as soft segments, and 4,4’-methylenebis(cyclohexyl isocyanate) (H12MDI) and polytetramethylene ether glycol (PTMEG) as hard segments, was prepared. Hydrolytic degradation experiment revealed that the degradable polyurethane (PU) could be degraded in artificial seawater. It also showed that caprolactone-copolyurethane (CL-PU) copolymer with higher crystallinity degraded much slower in artificial seawater. However, the introduction of LLA resulted in an increase in the hydrophilicity and reduction in the crystallinity of degradable PU, as demonstrated by the contact angle analysis. The result of the scanning electron microscope showed that the surface of degradable PU renewed under static condition. Moreover, degradable PU was able to be used as a carrier, and it controlled the release rate of 4, 5-dichloro-2- octyl-isothiazolone (DCOIT). The anti-diatom (Navicula incerta) test demonstrated that the (caprolactone-co-L-lactide)-co-polyurethane 4 (CL/LAx-PU4) with DCOIT contents prevented the adhesion of diatom Navicula incerta (88.37% reduction) due to their self-polishing and the release of antifoulants. Therefore, the degradable PU consisted of CL, LLA, and DCOIT could be a durable resin with good antifouling activity for the application in the marine anti-biofouling field.

关键词: Antifoulant, 4,5-dicholoro-2-octyl-isothiazolone, Degradable polyurethane, L-Lactide, Caprolactone

Abstract: In this work, a degradable polyurethane composed of caprolactone (CL) and L-Lactide (LLA) as soft segments, and 4,4’-methylenebis(cyclohexyl isocyanate) (H12MDI) and polytetramethylene ether glycol (PTMEG) as hard segments, was prepared. Hydrolytic degradation experiment revealed that the degradable polyurethane (PU) could be degraded in artificial seawater. It also showed that caprolactone-copolyurethane (CL-PU) copolymer with higher crystallinity degraded much slower in artificial seawater. However, the introduction of LLA resulted in an increase in the hydrophilicity and reduction in the crystallinity of degradable PU, as demonstrated by the contact angle analysis. The result of the scanning electron microscope showed that the surface of degradable PU renewed under static condition. Moreover, degradable PU was able to be used as a carrier, and it controlled the release rate of 4, 5-dichloro-2- octyl-isothiazolone (DCOIT). The anti-diatom (Navicula incerta) test demonstrated that the (caprolactone-co-L-lactide)-co-polyurethane 4 (CL/LAx-PU4) with DCOIT contents prevented the adhesion of diatom Navicula incerta (88.37% reduction) due to their self-polishing and the release of antifoulants. Therefore, the degradable PU consisted of CL, LLA, and DCOIT could be a durable resin with good antifouling activity for the application in the marine anti-biofouling field.

Key words: Antifoulant, 4,5-dicholoro-2-octyl-isothiazolone, Degradable polyurethane, L-Lactide, Caprolactone