環氧型雙離子共聚物對船舶防污塗料的製備和抗菌研究

Preparation and antibacterial research of marine antifouling coatings using epoxylated zwitterionic copolymers

黃星華(Hsing-Hua Huang)

指導教授 ： 周崇榮

中原大學/工學院/化學工程研究所/碩士(2021年)

https://doi.org/10.6840/cycu202100960

摘要

船艦長時間的航行讓浸泡在水下的船身因為海洋生物的附著與生長而逐漸造成船艦腐蝕、損壞，也會增加船艦控制阻力，在生態環境方面更容易造成跨區傳播、外來種入侵等嚴重的環境議題。本研究使用商業化的船艦塗料及支鏈聚乙烯亞胺(Branched Polyethylenimine, BPEI)和聚二季戊四醇五丙烯酸酯(Dipentaerythritol pentaacrylate, 5Acl)在乙醇中的混和物做為表面基材，再利用具有雙離子性的磺基甜菜鹼單體(Sulfoubetaine mathacrylate, SBMA)與甲基丙烯酸縮水甘油酯(Glycidyl methacrylate, GMA)合成具有抗蛋白質沾黏效果的高分子，將抗沾黏之高分子改質於基材表面。改質後表面透過水接觸角實驗檢測其表面水合能力，利用酵素結合免疫吸附分析法(Enzyme-linked immunosorbent assay, ELISA)來測試表面蛋白質吸附濃度以推測其蛋白質貼附量，並運用螢光菌貼附實驗與正立式顯微鏡直接拍攝且計算其貼附量以驗證其抗沾黏效果。通過以上檢測發現改質後表面確實達到良好的抗沾黏效果以避免生物之沾黏，期望未來能利用此方式加以放大至工廠規模，將船艦或水下設備表面優化至良好的抗污表面，延長水下設備使用年限，減少不必要的維修損耗，也維持海洋生態的安定。

關鍵字

船艦 ； 抗沾黏 ； 聚乙烯亞胺 ； 丙烯酸酯 ； 雙離子 ； 水下抗污

並列摘要

Maritime ship hulls immersed in the sea water gradually get corroded and damaged because of the attachment and subsequent growth of planktonic barnacles. This increases the resistance of the ships and their difficulties to control, and it is also more likely to cause global transmission and alien species invasion in various ecological systems. Finding a good replacement for toxicity based antifoulant such as tributyltin is now a serious environmental issue. In this study, commercial ship coatings and polymer blends composed of branched polyethylenimine (BPEI) and dipentaerythritol pentaacrylate (5Acl) in ethanol were used as the surface substrate. Zwitterionic sulfobetaine methacrylate (Sulfoubetaine mathacrylate, SBMA) and glycidyl methacrylate (Glycidyl methacrylate, GMA) were mixed with various ratios to synthesize polymers with distinguished anti-fouling potential, and these were used to functionalize the substrates. After coating on the surfaces, they were tested physically with water contact angle tests to observe hydrophilicity changes. Chemically, the coated layers were further tested with Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscope (XPS) to identify the surficial changes in elemental composition and organic functional groups. Subsequently, the enzyme-linked immunosorbent assay (ELISA) is used to compare the amounts of proteins adsorbed to untreated substrates. Bacterial attachment experiments were photographed with a fluorescent microscope and the images were digitalized to verify its anti-adhesion effect. Through the above tests, successful coatings of copolymer on the surfaces were proven with high hydrophilicity and observed spectroscopy evidences. Next, it is found that the modified surface achieved good anti-fouling abilities to avoid both protein and bacterial adhesion. It is expected that this method can be tested in the future to be used on hull surface of ships or underwater equipment as a potential industrial anti-foulant.

並列關鍵字

Ship ； Polyethyleneimine ； Acrylate ； Zwitterionic polymer ； Underwater antifouling

參考文獻

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