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• Bhatt, L
• Kim, B
• Hyun, K
• Kwak, G
• Lee, C
• Chai, K
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• Bhatt, L
• Kim, B
• Hyun, K
• Kwak, G
• Lee, C
• Chai, K
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• Bhatt, L
• Kim, B
• Hyun, K
• Kwak, G
• Lee, C
• Chai, K

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Molecules 2011, 16(4), 3029-3036; doi:10.3390/molecules16043029

Article

Preparation and Characterization of Chitin Benzoic Acid Esters

Lok Ranjan Bhatt, Bo Mi Kim, Kim Hyun, Geu Beum Kwak, Chai Ho Lee and Kyu Yun Chai*

Department of Bionanochemistry, School of Natural Sciences, Wonkwang University, Iksan, Chonbuk 570-749, Korea

* Author to whom correspondence should be addressed.

Received: 1 February 2011; in revised form: 31 March 2011 / Accepted: 2 April 2011 / Published: 8 April 2011

Download PDF Full-Text [1766 KB, uploaded 8 April 2011 11:31 CEST]

Abstract: Chitin benzoic acid esters were prepared using a phosphoryl mixed anhydride method. The products were characterized by ¹H-NMR and FT-IR spectroscopy. FT-IR analysis revealed that the degree of O-acyl substitution of the products was in a range of 1.17–1.83. Morphological surface changes in the parent molecule due to the introduction of benzoic acid moieties were observed by scanning electron microscopy. The surface of the products was porous, in contrast to the sheet-shape of the parent molecules. The solubility of the products, which improved with increased degree of acid substitution, was tested in various organic solvents.

Keywords: acylation; chitin benzoate; benzoic acid; trifluoroacetic anhydride; phosphoric acid

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