Abstract: Silicone low surface energy antifouling coatings does not contain biocides，which is green and eco-friendly，but it had the problem of poor static antifouling ability. In this study，multivinyl siloxane monomers were homopolymerized into single-chain cyclized/knotted silicone polymers with different molecular weights by RAFT polymerization，and then antifouling coating were prepared by UV curing. Studies had shown that the visible lighttransmittance of the antifouling coating was more than 95%. The coating was hydrophobic andthe surface energy of the coating was low（21-25 mJ/m²）. Through AFM tests，it was found that a large number of uniform spherical nanoparticles were formed on the surface of the antifoulingcoating SCKP-3 prepared from high molecular weight polymers. Antifouling experimentsunder laboratory conditions demonstrated that the microstructure of the coating surface couldeffectively inhibit the adhesion of P. sp.，S. sp. and diatoms. This study provided a new idea forthe development of novel silicone low surface energy antifouling coatings.

Key words: biofouling, antifouling coating, silicone, RAFT polymerization, single chain cyclized/knotted

摘要： 有机硅低表面能防污涂料不含杀生剂，绿色环保，但存在静态防污能力较差的问题。本研究采用可逆加成断裂链转移（ RAFT）聚合的方法，通过动力学控制将多烯基硅氧烷单体进行均聚，合成了不同相对分子质量的单链环化 /打结有机硅聚合物，随后通过紫外光固化进一步制备了防污涂层。研究表明，防污涂层的可见光透过率大于 95%；涂层疏水且表面能较低（ 21~25 mJ/m²）；通过原子力显微镜（ AFM）测试发现，使用相对分子质量较高的聚合物所制备的防污涂层 SCKP-3表面形成了大量均匀的球型纳米颗粒；实验室条件下防污实验表明，涂层表面的微观纳米结构可有效抑制假单胞菌、希瓦氏菌和硅藻的附着。本研究为开发新型有机硅低表面能防污涂料提供了新的思路。

关键词: 生物污损, 防污涂层, 有机硅, RAFT聚合, 单链环化 /打结

CLC Number: 

• TQ637. 3