Department of Chemistry, University of Patras, GR-26504 Patras, Achaia, Greece.
Department of Geology, University of Patras, GR-26504 Patras, Achaia, Greece.
Int J Mol Sci. 2021 Apr 28;22(9):4658. doi: 10.3390/ijms22094658.
The synthesis of environmentally friendly antimicrobial polymeric coatings, especially in the case of aquaculture, that inhibit the growth of bio-deposits is a very important issue that will contribute to the cost reduction of nets' cleaning process as well as the protection of the submarine wealth from the biostatic substances used so far. In the present work, the antimicrobial polymers P(SSAmC-co-VBCHAMx) and the terpolymer P(SSAmCw-co-VBCHAMx-co-GMAy) were synthesized, bearing quaternary ammonium compounds, electrostatically bound and covalently attached at the same polymer chain. The combination of the two types is of particular importance, as it can provide effective antimicrobial polymeric materials with self-polishing capabilities as a result of the released nature of the antimicrobial, in combination with the permanent local action of the immobilized species. The cross-linking reaction of the terpolymer P(SSAmCw-co-VBCHAMx-co-GMAy) with the homopolymer polyacrylic acid (PAA) was tested at 120 °C in terms of the equivalent ratio between epoxy and carboxyl groups. The synthesized polymers were further used for the coating of aquaculture nets and tested in terms of antifouling efficiency in lab and scale-up conditions. Uncoated nets were also used in all applications for comparison reasons. The coated nets performed efficiently for 35 days in lab-scale and 66 days in scale-up conditions, showing a high antifouling activity in both fields compared to the uncoated nets.
合成环保型抗菌聚合涂层，特别是在水产养殖领域，抑制生物沉积物的生长是一个非常重要的问题，这将有助于降低网具清洁过程的成本，并保护海底财富免受迄今为止使用的生物抑制剂的侵害。在本工作中，合成了带有季铵盐的抗菌聚合物 P(SSAmC-co-VBCHAMx)和三元共聚物 P(SSAmCw-co-VBCHAMx-co-GMAy)，它们通过静电结合和共价键合在同一聚合物链上。两种类型的结合具有特别重要的意义，因为它可以提供具有自抛光能力的有效抗菌聚合材料，这是由于抗菌剂的释放性质与固定化物种的永久局部作用相结合的结果。在 120°C 下，对三元共聚物 P(SSAmCw-co-VBCHAMx-co-GMAy)与均聚聚丙烯酸 (PAA) 的交联反应进行了测试，以测试环氧基和羧基之间的当量比。进一步将合成的聚合物用于水产养殖网的涂层，并在实验室和规模化条件下测试其防污效率。为了比较的原因，所有应用中也使用了未涂层的网。涂层网在实验室规模下有效运行了 35 天，在规模化条件下有效运行了 66 天，与未涂层网相比，在这两个领域都表现出了很高的防污活性。
