[研究进展]谢茹同学研究了可降解超支化聚酯弹性防污材料 (相关成果发表在Progress in Organic Coatings) |
发布时间: 2023-03-22 浏览次数: 304 |
Title: Non-Silicone Elastic Coating with Fouling Resistance and Fouling Release Abilities Based on Degradable Hyperbranched Polymer Abstract: Developing eco-friendly antifouling materials for combating marine biofouling has long been a challenging task. In this work, we report a non-silicone elastomer coating based on hyperbranched poly(ε-caprolactone) (HPCL) cross-linked with an amphiphilic triblock copolymer of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol). The polymer coating was prepared by ring-opening polymerization and self-condensation reactions, which can be prepared at a large scale. Such a coating is expected to have self-renewed surface, fouling resistance and fouling release abilities. Quartz crystal microbalance with dissipation test shows that the coating is degradable and its degradation rate increases with the HPCL content, leading to a self-renewed surface. Bioassays with bacteria (Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli)) and diatom (Navicula incerta) reveal that the surface with triblock copolymer content of 12.5 wt% or higher can resist the adhesion of microorganisms, The coating also has good fouling release performance with pseudobarnacle removal strength of ~0.15 MPa, which is comparable with that of silicone elastomer. Marine field test for over 120 days proves the coating can effectively inhibit marine biofouling due to the synergetic effect of surface renewal, fouling release and fouling resistance. This work provides a facile preparation method for biocide-free antifouling materials.
DOI:10.1016/j.porgcoat.2022.107350 |