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Title: Preparation of new water-soluble chitosan containing hyperbranched- vinylsulfonic acid sodium salt and their antimicrobial activities and chelation with metals
Authors: Ratana Chanthateyanonth
Somsak Ruchirawat
Chutima Srisitthiratkul
Mahidol University
Chulabhorn Research Institute
Keywords: Chemistry;Materials Science
Issue Date: 15-May-2010
Citation: Journal of Applied Polymer Science. Vol.116, No.4 (2010), 2074-2082
Abstract: In this work, an efficient and simple method to graft a vinylsulfonic acid sodium salt on a poorly watersoluble chitosan is described. Commercially available low molecular weight chitosan is converted to water-soluble chitosan containing hyperbranched-vinylsulfonic acid sodium salt groups. The process comprises the following steps: Michael addition of methyl acrylate, amidation with ethylenediamine, and Michael addition of vinylsulfonic acid sodium salt. A variety of chitosans containing vinylsulfonic acid sodium salt, with improved water solubility, is synthesized by repeating these three steps. The new chitosan derivatives show better antimicrobial activity against Micrococcus luteus ATCC 10240 and Achromobacter xylosoxidans ATCC 2706. In addition, they display better chelating behavior with heavy metals, like cadmium(II), copper(II), and nickel(II), than the starting chitosan. © 2010 Wiley Periodicals, Inc.
ISSN: 10974628
Appears in Collections:Scopus 2006-2010

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