Novel polyion complex films from chitosan and quarternized poly(4-vinyl-N-carboxymethylpyridine) containing zwitterion structure units

Novel polyion complexes films of chitosan and quarternized poly(4-vinyl-N-carboxymethylpyridine) containing zwitterion structure units were prepared by casting method. The aim of this work was to produce a hydrophilic film with the potential use as a hydrophilic membranes of the types used in membra...

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Bibliographic Details
Published in:Journal of applied polymer science 2007-12, Vol.106 (5), p.3070-3076
Main Authors: Liu, Changhua, Xiao, Chaobo, Huang, Yuming
Format: Article
Language:English
Subjects:
Applied sciences
Breaking
Chitosan
Distillation
Elongation
Exact sciences and technology
Exchange resins and membranes
Forms of application and semi-finished materials
Membranes
Natural polymers
Physicochemistry of polymers
polyion complexes
Polymer industry, paints, wood
quarternized poly(4‐vinyl‐N‐carboxymethylpyridine)
Starch and polysaccharides
Swelling
Technology of polymers
Tensile strength
X ray diffraction
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Summary:Novel polyion complexes films of chitosan and quarternized poly(4-vinyl-N-carboxymethylpyridine) containing zwitterion structure units were prepared by casting method. The aim of this work was to produce a hydrophilic film with the potential use as a hydrophilic membranes of the types used in membranes distillation and osmotic distillation for separating azeotropic, close-boiling, and aqueous organic mixtures. Their structure and properties were studied by infrared, wide-angle X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, tensile tester, and swelling measurements. The results indicated that polyion complexes occurred between chitosan and quarternized poly (4-vinyl-N-carboxymethylpyridine) containing zwitterion structure units. The thermostability of these blends decreased with the increase of quarternized poly(4-vinyl-N-carboxymethylpyridine) content. Initially, appreciable improvement in tensile strength and breaking elongation were achieved with increase of quarternized poly(4-vinyl-N-carboxymethyl-pyridine) content to 30%, the maximum value of 46.65 MPa tensile strength and 25.67% breaking elongation were achieved, respectively. The maximum degree of swelling was achieved when the weight ratio of chitosan versus poly(4-vinyl-N-carboxymethylpyridine) was 50 : 50. Meanwhile, the relationship between their structure and properties was also discussed. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2007
ISSN:0021-8995
1097-4628
DOI:10.1002/app.26688