Abstract An efficient graft polymerization method for modification of polymeric membranes was developed using ink-jet printing. The method for grafting was investigated by printing a zwitterionic acrylate monomer on a polyethersulfone UF membrane with subsequent UV irradiation. The successful grafting was confirmed by ATR-FTIR and XPS. This printing-assisted grafting method required 5-10X less reactant chemicals compared to known dip-coating methods, while a similar degree of grafting could be achieved. Furthermore, the grafting resulted in polymer brush morphological features, which increased with the reaction time. In addition, the membrane permeability following modification was maintained even at high degree of grafting, and rejection of PEG was only slightly affected, indicating that the grafting was predominantly on the surface and not in the pores. Static protein adsorption measurements confirmed that the modified membrane acquired low protein fouling properties, and reduced biofilm growth was observed using Pseudomonas aeruginosa as the model biofilm forming bacteria. These new tools for modification of membranes will enable optimization of surface coatings and could facilitate advances in water treatment technology.

中文翻译：

---

通过喷墨打印辅助改性在聚醚砜超滤膜上进行紫外线引发的表面接枝

摘要 利用喷墨印刷开发了一种用于聚合物膜改性的有效接枝聚合方法。通过在聚醚砜超滤膜上印刷两性离子丙烯酸酯单体并随后进行紫外线照射来研究接枝方法。ATR-FTIR 和 XPS 证实了嫁接成功。与已知的浸涂方法相比，这种印刷辅助接枝方法需要的化学反应物少 5-10 倍，同时可以实现相似程度的接枝。此外，接枝导致聚合物刷形态特征，随着反应时间的增加而增加。此外，即使在高度接枝的情况下，修饰后的膜通透性也能保持，对 PEG 的排斥仅受到轻微影响，表明接枝主要在表面而不是在孔中。静态蛋白质吸附测量证实，改性膜获得了低蛋白质污染特性，并且使用铜绿假单胞菌作为模型生物膜形成细菌观察到生物膜生长减少。这些用于膜改性的新工具将能够优化表面涂层，并可能促进水处理技术的进步。