Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes
Author
Source
International Journal of Polymer Science
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-06-29
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Cellulose acetate (CA) hollow fibers were spun from a CA+ Polyvinylpyrrolidone (PVP)/N-methyl-2-pyrrolidone (NMP)/H2O dope solution and regenerated by deacetylation.
The complete deacetylation time of 0.5 h was found at a high concentration (0.2 M) NaOH ethanol (96%) solution.
The reaction rate of deacetylation with 0.5 M NaOH was faster in a 50% ethanol compared to a 96 vol.% ethanol.
The hydrogen bond between CA and tertiary amide group of PVP was confirmed.
The deacetylation parameters of NaOH concentration, reaction time, swelling time, and solution were investigated by orthogonal experimental design (OED) method.
The degree of cross-linking, the residual acetyl content, and the PVP content in the deacetylated membranes were determined by FTIR analysis.
The conjoint analysis in the Statistical Product and Service Solutions (SPSS) software was used to analyze the OED results, and the importance of the deacetylation parameters was sorted as Solution > Swelling time > Reaction time > Concentration.
The optimal deacetylation condition of 96 vol.% ethanol solution, swelling time 24 h, the concentration of NaOH (0.075 M), and the reaction time (2 h) were identified.
The regenerated cellulose hollow fibers under the optimal deacetylation condition can be further used as precursors for preparation of hollow fiber carbon membranes.
American Psychological Association (APA)
He, Xuezhong. 2017. Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes. International Journal of Polymer Science،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1168918
Modern Language Association (MLA)
He, Xuezhong. Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes. International Journal of Polymer Science No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1168918
American Medical Association (AMA)
He, Xuezhong. Optimization of Deacetylation Process for Regenerated Cellulose Hollow Fiber Membranes. International Journal of Polymer Science. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1168918
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1168918