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Chin J Mater Res  2010, Vol. 24 Issue (3): 254-258    DOI:
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Mixed Monolayers of O–Quaternized –N, N–Dilauryl Chitosan with Cholesterol
MING Rujing, XIN Meihua, LI Mingchun, LIU Juezhao
College of Material Science and Engineering, Huaqiao University, The Key Laboratory for Functional Materials of Fujian Higher Education, Xiamen 361021
Cite this article: 

MING Rujing XIN Meihua LI Mingchun LIU Juezhao. Mixed Monolayers of O–Quaternized –N, N–Dilauryl Chitosan with Cholesterol. Chin J Mater Res, 2010, 24(3): 254-258.

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Abstract  

O–quaternized–N,N–dilauryl chitosan was prepared and characterized by FTIR, EA and 1H NMR. The behaviors of mixed monolayers of O–quaternized–N,N–dilauryl chitosan and cholesterol were studied. It showed that the limiting molecular area Aex and collapse pressure πc of mixed monolayers gradually decreased as the cholesterol molar ratio increased from 0.2 to 0.8. The values of ΔGexc changed from an attractive interaction to a repulsive interaction between O–quaternized–N,N–dilauryl chitosan and cholesterol with a critical point of cholesterol molar ratio 0.4 added in the mixed system, and the most stable state of mixed monolayers was observed at molar ratio of cholesterol 0.2.

Key words:  chitosan, derivative, cholesterol, monolayer     
Received:  07 December 2009     
ZTFLH: 

O636

 
Fund: 

Supported by National Natural Science Foundation of China No.20274013 and No.20574024, the Key Science Projects of Fujian Province No.2002I004 and No.2009H0030, the Natural Science Foundation of Fujian Province No.E0810019 and No.2009J01029, and the Open Topics of the Key Laboratory of Molecular Engineering of Polymers, Ministry of Education, Fudan University.

URL: 

https://www.cjmr.org/EN/     OR     https://www.cjmr.org/EN/Y2010/V24/I3/254

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