NDLI: Preparation and characterization of O-carboxymethyl chitosan–sodium alginate polyelectrolyte complexes

Content Provider	Springer Nature Link
Author	Huang, Guo Qing Cheng, Ling Yun Xiao, Jun Xia Han, Xiao Na
Copyright Year	2014
Abstract	O-carboxymethyl chitosan (O-CMC) is a water-soluble derivative of chitosan. In this work, the formation of polyelectrolyte complex (PEC) between O-CMC and sodium alginate (SAL) was explored by investigating the effects of medium pH, polyelectrolytes mixing ratio, and ionic strength on the yield of O-CMC–SAL PECs. Meanwhile, the rheological, thermal, and microstructural properties of the PECs prepared at various medium acidities were characterized as well. The results indicated that the strongest complexation between O-CMC and SAL occurred in medium pH 6.5 and biopolymer ratio (R O-CMC/SAL) 1.5:1 (w/w) in the absence of added NaCl. Fourier transform infrared (FTIR) spectroscopy analysis revealed that both electrostatic interaction and hydrogen bonding were involved in PEC formation. The PECs possessed the porous structure and displayed predominately the elastic property with the highest moduli values being recorded at medium pH 3.5. It was concluded that the O-CMC–SAL PECs have potential biomedical applications due to the nearly neutral complexation pH and the porous structure for drug inclusion.
Starting Page	401
Ending Page	407
Page Count	7
File Format	PDF
ISSN	0303402X
Journal	Colloid and Polymer Science
Volume Number	293
Issue Number	2
e-ISSN	14351536
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-10-22
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	O-carboxymethyl chitosan Sodium alginate Polyelectrolyte complex Characterization Polymer Sciences Soft and Granular Matter, Complex Fluids and Microfluidics Characterization and Evaluation of Materials Physical Chemistry Food Science Nanotechnology and Microengineering
Content Type	Text
Resource Type	Article
Subject	Colloid and Surface Chemistry Materials Chemistry Physical and Theoretical Chemistry Polymers and Plastics

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