基于季铵化三甲基功能化壳聚糖的抗真菌膜用于饮用水处理。
Quaternized trimethyl functionalized chitosan based antifungal membranes for drinking water treatment.
机构信息
Polymer Research Laboratory, School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), H-12 Sector, Islamabad, 44000, Pakistan.
Department of Chemical Engineering, COMSATS Institute of Information Technology, Lahore, 54000, Pakistan.
出版信息
Carbohydr Polym. 2019 Mar 1;207:17-25. doi: 10.1016/j.carbpol.2018.11.066. Epub 2018 Nov 22.
Chitosan was functionalized to synthesize Quaternized N-trimethyl chitosan (TMC) and incorporated in polyethersulfone (PES) polymer to fabricate membranes for enhanced antifungal activity and water treatment. The TMC was synthesized from chitosan via reductive alkylation and methylation. The effect of concentration of chitosan and TMC on the properties of functionalized PES membranes was investigated. The membrane with the lowest concentration of TMC 5% (w/w) resulted in the largest average pore size than the PES membrane without chitosan or TMC. The surface wettability was enhanced as contact angle was reduced from 90° to 57° by increasing concentration of TMC to 15% (w/w). The resultant membranes exhibited improved water hydrophilicity, permeability and inhibition against fungal species. The functionalized membranes had shown noticeable antifungal activity against Aspergillus niger in the case of 15% TMC with 72% antifungal activity and 15% chitosan with 63% antifungal activity against Fusarium solani.
壳聚糖被功能化以合成季铵化 N-三甲基壳聚糖（TMC），并掺入聚醚砜（PES）聚合物中，以制造具有增强的抗真菌活性和水处理性能的膜。TMC 是通过壳聚糖的还原烷基化和甲基化合成的。研究了壳聚糖和 TMC 的浓度对功能化 PES 膜性能的影响。与不含壳聚糖或 TMC 的 PES 膜相比，TMC 浓度最低的 5%（w/w）的膜具有最大的平均孔径。随着 TMC 浓度从 15%（w/w）增加到 15%（w/w），接触角从 90°降低到 57°，表面润湿性得到增强。所得膜表现出改善的水亲水性、渗透性和对真菌物种的抑制作用。功能化膜对黑曲霉具有明显的抗真菌活性，在 15%的 TMC 下具有 72%的抗真菌活性，在 15%的壳聚糖下对尖孢镰刀菌具有 63%的抗真菌活性。
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