Abstract: A series of（PDMS-b-PEG） amphiphilic block copolymers were synthesized via a two-step hydrosilylation reaction，and polydimethylsiloxane（PDMS），polyethylene glycol dimethacrylate（PEGDMA）， and vinyltriethoxysilane（VTOES）were used as raw materials. Quaternary ammonium salt-functionalized amphiphilic organosilicon anti-fouling coatingswere prepared by mixing the copolymers with 2-methacryloyloxyethyltrimethylammoniumchloride（QAS）. The results indicated that both the（PDMS-b-PEG） block copolymers and QAS-block copolymers exhibited microphase separation on the surface of the coatings. The degree of microphase separation was most pronounced when the molar fraction of PEGDMAmonomer was 60%，and it became more prominent after introducing the QAS functional group. Additionally，with an increase in the hydrophilic segment，the anti-protein effect was improved.The optimal antifouling performance was achieved when the molar fraction of PEGDMA monomerwas 60% and the mass fraction of QAS was 3%. Furthermore，the coating demonstrated excellentmarine antifouling properties based on a 90-day seawater immersion test.

Key words: antifouling, fouling release, amphiphilic coating, microphase separation, quaternary ammonium salts

摘要： 以聚二甲基硅氧烷（ PDMS）、聚乙二醇二甲基丙烯酸酯（ PEGDMA）和三乙氧基氢硅烷（VTOES）为原料，通过两步硅氢加成合成了一系列（ PDMS-b-PEG） 两亲性多嵌段聚合物。通过与 2-甲基丙烯酰氧乙基三甲基氯化铵（QAS）混合制备了季铵官能化的两m亲性有机硅基防污涂层。研究结果表明：（PDMS-b-PEG） 多嵌段聚硅氧烷两亲共聚物和 QAS-多嵌段硅氧烷两亲共聚物涂层表面均存在微相分离结构，其微相m分离程度在 PEGDMA单体摩尔分数为 60%时最明显，且在引入 QAS基团后其表面微相分离程度均变得更加明显，且随着亲水链段的增加，抗蛋白效果更好，在 PEGDMA单体摩尔分数为 60%，QAS含量为 3%时防污性能达到最佳。经 90 d的实海挂板实验发现，共聚物涂层具有良好的海洋防污性能。

关键词: 防污, 污损脱附, 双亲涂层, 微相分离, 季铵盐

CLC Number: 

• TQ637. 3