期刊
CARBOHYDRATE POLYMERS
卷 177, 期 -, 页码 32-39出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2017.08.115
关键词
Adsorption; Electrospinning; Degree of deacetylation and chitosan
资金
- University of Malaya [RP034-15AET]
- Fundamental Research Grant Scheme [FP026-2014B]
- Ministry of Higher Education Malaysia [UM.C/625/1/HIR/MOHE/ENG 40]
In this study, effect of degree of deacetylation on property and adsorption capacity of chitosan/polyvinyl Alcohol electrospun membrane has been investigated. Resulting nanofibers were characterized by FESEM, FTIR, XRD, TGA, tensile testing, weight loss test and adsorption test. FESEM result shows, finer nanofiber was fabricated from 42 h hydrolyzed chitosan and PVA blend solution. FTIR and XRD result showed a strong interaction between chitosan and polyvinyl alcohol. Higher tensile strength was observed for the nanofiber having 42 h hydrolyzed chitosan. Blend solution of chitosan/PVA having low DD chitosan had higher viscosity. The nanofibrous membrane was stable in distilled water, acidic and basic medium. The isotherm study shows that the adsorption capacity (q(m)) of nanofiber containing higher DD chitosan was higher for Cr(VI). In contrary, the membrane containing chitosan with lower DD showed the higher adsorption capacity for Fe(III) and methyl orange. Moreover, the effect of DD on removal percentage of adsorbate was dependent on the initial concentration of the adsorbate.
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