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| Preparation and Property of Oxidized Cellulose Acetate with C–6 Carboxyl Groups |
| WANG Kai, TANG Aimin |
| State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640 |
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Cite this article:
WANG Kai TANG Aimin. Preparation and Property of Oxidized Cellulose Acetate with C–6 Carboxyl Groups. Chin J Mater Res, 2012, 26(4): 408-413.
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Abstract Oxidized cellulose acetate with a free carboxylic acid group content of 0.93mmol/g on C–6 position of the glucose and a total degree of substitution (DS) 2.72, was prepared by oxidizing the dissolving wood pulp with TEMPO/NaClO/NaClO2 and then reacted with a mixture of acetic acid and acetic anhydride with sulfuric acid as catalyst. The structure of the product was characterized with Fourier transfer infrared spectroscopy, X–ray diffraction analysis, proton and carbon–13 nuclear magnetic resonance. The thermal properties were tested by thermo–gravimetry analysis and differential scanning calorimetry. The results show the product has a good substitution uniformity with C–2, C–3 and C–6 position’s acetyl DS of 0.93, 0.98 and 0.81 respectively. The product can dissolve in dimethylsulfoxide, and has good thermoplastic with a melting point of 257 degree celsius. The acetyl access improves thermoplastic of the product.
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Received: 30 May 2012
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| Fund: Supported by the State Key Development Program for Basic Research of China No.2010CB732206. |
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