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Preparation and characterization of cellulose‐coated chitosan beads with improved strength and acid resistivity
Author(s) -
Duan Jiangjiang,
Wang Yue,
Wang Yudi,
Xiong Xiaopeng
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.36914
Subject(s) - chitosan , cellulose , bead , materials science , adsorption , chemical engineering , coating , scanning electron microscope , polymer , porosity , x ray photoelectron spectroscopy , microstructure , polymer chemistry , bacterial cellulose , composite material , chemistry , organic chemistry , engineering
Abstract A new chitosan bead was successfully prepared by simply dropping acidic chitosan solution into 0.5 wt % alkaline cellulose solution. The X‐ray photoelectron spectroscopy analysis and the scanning electron microscope observation indicate that thin layer of cellulose was coated on the chitosan bead to have strong interaction with inner chitosan. Therefore, the bead reveals porous microstructure of regenerate cellulose in the surface. Owing to the cellulose coating, the bead displays improved mechanical properties and acid resistance. The adsorption of Fe 3+ onto the new chitosan beads was investigated in detail, and the results show that the cellulose coating has little influence on the adsorption of the chitosan. Therefore, this study provides a novel method to expand the application of chitosan by coating with an acid‐insensitive polymer. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012