N,N-Dilauryl Chitosan:Synthesis and Surface Pressure-area Isotherm

Chemical Research in Chinese Universities ›› 2004, Vol. 20 ›› Issue (2): 210-212.

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N,N-Dilauryl Chitosan:Synthesis and Surface Pressure-area Isotherm

WANG Min¹, LI Ming-chun¹, LIU Chao¹, SUN Duo-xian², MITSUISHI Masaya³, MIYASHITA Tokuji³

1. College of Material Science and Engineering, Huaqiao University, Quanzhou 362011, P.R. China;
2. College of Chemical Engineering, Tianjin University, Tianjin, 300072, P.R. China;
3. Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai, Japan

Received:2003-12-05 Online:2004-04-24 Published:2011-08-06
Supported by:
Supported by the National Natural Science Foundation of China (No.20274013), Key Project of the Fujian Provincial Science and Technology(No.2002I004) and the Fujian Provincial Science Foundation of China(No.E0110027 and C0310009).

Abstract

Abstract: With sodium dodecyl sulfonate(SDS) as the phase transferring catalyst, N,N-Dilauryl chitosans with a high degree of alkyl group substitution were prepared and characterized by means of FTIR, ¹H NMR and elemental analyses. The results indicate that the average degree of alkyl group substitution on the chitosan increases with decreasing the molecular weight of the chitosan. The fully N,N-dilaurylated chitosan was found to be dissolvable in chloroform. The collapsed pressures of the samples derived from chitosan with 3000,5000 and 10000 dalton are 47.6, 48.2 and 51.0 mN/m, respectively. The surface area occupied by the monomer unit (glucosamine) of all those samples is 0.6 nm².

Key words: N,N-Dilauryl chitosan, Synthesis, Isotherm

WANG Min, LI Ming-chun, LIU Chao, SUN Duo-xian, MITSUISHI Masaya, MIYASHITA Tokuji. N,N-Dilauryl Chitosan:Synthesis and Surface Pressure-area Isotherm[J]. Chemical Research in Chinese Universities, 2004, 20(2): 210-212.

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N,N-Dilauryl Chitosan:Synthesis and Surface Pressure-area Isotherm

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