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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
- Abstract
In this work, an efficient and simple method to graft a vinylsulfonic acid sodium salt on a poorly water‐soluble 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 luteusATCC 10240 and Achromobacter xylosoxidansATCC 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. J Appl Polym Sci, 2010
- Subjects
SULFONIC acids; SODIUM salts; CHITOSAN; MOLECULAR weights; METHYL acrylate
- Publication
Journal of Applied Polymer Science, 2010, Vol 116, Issue 4, p2074
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.31732