# SYNTHESIS AND CHARACTERIZATION OF N-(CARBOXY-METHYLTHIOUREIDO)-CHITOSAN AND ITS DISPERSION CAPABILITY

> Title: SYNTHESIS AND CHARACTERIZATION OF N-(CARBOXY-METHYLTHIOUREIDO)-CHITOSAN AND ITS DISPERSION CAPABILITY Page Range: p.485-490 Author(s): Liu J; Min Wu Y; Li Nie Z File size: 287K Download the pdf (subscribers only) Buy the pdf (non-subscribers) Journal: Polymers and Polymer Composites Issue Year: ppc...

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Published: 2011-06-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: SYNTHESIS AND CHARACTERIZATION OF N-(CARBOXY-METHYLTHIOUREIDO)-CHITOSAN AND ITS DISPERSION CAPABILITY**
 Page Range: p.485-490
 Author(s): Liu J; Min Wu Y; Li Nie Z
 File size: 287K
 ![](http://dload.gif) [Download the pdf](http://journals.asp?Page=111&JournalDownload=ON&JournalType=ppc&JournalIssue=ppc19-6&JournalID=101351&JIP=) (subscribers only)
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 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 19
 Issue No: No.6

**Abstract**
 Water-soluble N-carboxymethylthioureidochitosan (CMTC) was synthesised by the reaction between chitosan (CTS) and ammonium thiocyanate and chloroacetic acid in a hydrochloric acid aqueous solution. The modified product was confirmed by Fourier transform infrared (FTIR) spectrometry, X-ray diffractometry (XRD) and thermal analysis. The results showed that new functional groups had been linked to amino groups of CTS molecules, and the product was more amorphous than CTS. The dispersion stability of CMTC was examined with a sedimentation test of 1 wt.% kaolin suspension in test tubes, under different concentrations and different pH. The results indicated that CMTC may be applicable for use as a novel stabiliser in neutral solution in which the concentration of CMTC is 0.5% or 1%. 25 Refs.

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