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Journal of Dispersion Science and Technology Volume 31, 2010 - Issue 7
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Original Articles

Comparative Study on the Effect of NaBr on the Interaction Between Alkyltrimethylammonium Bromide and β-Cyclodextrin

Yan Bai Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China
,
Gui Ying Xu Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. ChinaCorrespondence[email protected]
,
Jin Yu Pang Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China
,
Hong Yuan Sun School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China
,
Ai You Hao School of Chemistry and Chemical Engineering, Shandong University, Jinan, P.R. China
,
Xia Xin Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China
,
Ming Qi Ao Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China
&
Xiao Deng Yang Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, P.R. China
 show all
Pages 945-953 | Received 01 Mar 2009, Accepted 25 Mar 2009, Published online: 21 Jun 2010
 
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Abstract

The effect of NaBr on the interaction between alkyltrimethylammonium bromide (CnTAB (n = 14 for TTAB and 16 for CTAB)) and ß-CD was studied by surface tension method. The first decrease in the γcmc of TTAB/ß-CD in the presence of NaBr mainly due to the elongated effective chain length of the hydrophobic part of the TTAB/ß-CD complexes; while the increase in the γcmc of both of the TTAB/ß-CD and CTAB/ß-CD in the presence of NaBr could be attributed to the close pack of CnTAB at the air/water interface.

The authors gratefully acknowledge the financial support from the Natural Science Foundation (20873077).

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