Journal
CARBOHYDRATE POLYMERS
Volume 207, Issue -, Pages 17-25Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2018.11.066
Keywords
Antifouling; Polyethersulfone; Chitosan; N-Trimethyl chitosan; Membranes
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Funding
- Research Directorate NUST
- Higher Education Commission (HEC) Pakistan [NRPU 3520, 3620]
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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 degrees to 57 degrees 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.
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