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author:

Song, Bing-Lei (Song, Bing-Lei.) [1] | Yu, Xiao-Na (Yu, Xiao-Na.) [2] | Zhao, Jian-Xi (Zhao, Jian-Xi.) [3] | Sun, Guo-Jing (Sun, Guo-Jing.) [4]

Indexed by:

EI

Abstract:

Stable foams were generated using a cationic gemini surfactant, ethanediyl-1,2-bis(dodecyldimethylammonium bromide) (12-2-12) together with a linear alcohol, hexanol (C6OH) or heptanol (C7OH), in aqueous solution. The foam stability was determined using the half-life of foam height falling (t1/2) as the index. The results showed that C7OH was more efficient than C6OH together with 12-2-12 to stabilize the foams. To generate the most stable foams, the optimum addition for both C6OH and C7OH was determined. The adsorption of the mixtures at the air/water interface was studied using surface tension measurements. The intermolecular interactions and the composition of the mixed monolayer were estimated by Rubingh-Rosen theory and the surface excess was derived from the Gibbs equation. The total surface excess that included both 12-2-12 and alcohols, was shown to significantly increase following the addition of alcohols suggesting the active molecules were more densely packed at the interface. The interfacial dilational rheology of the films was examined using the oscillating drop technique. The results showed that a highly stable foam always corresponded to a highly elastic adsorption film. The present study suggests a new formula for the generation of highly stable foams using a gemini surfactant with a short spacer together with a linear alcohol. © The Royal Society of Chemistry 2015.

Keyword:

Surface active agents

Community:

  • [ 1 ] [Song, Bing-Lei]Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi Jiangsu; 214122, China
  • [ 2 ] [Yu, Xiao-Na]Key Laboratory of Food Colloids and Biotechnology, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi Jiangsu; 214122, China
  • [ 3 ] [Zhao, Jian-Xi]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian; 350108, China
  • [ 4 ] [Sun, Guo-Jing]Institute of Colloid and Interface Chemistry, College of Chemistry and Chemical Engineering, Fuzhou University, Fuzhou Fujian; 350108, China

Reprint 's Address:

  • [zhao, jian-xi]institute of colloid and interface chemistry, college of chemistry and chemical engineering, fuzhou university, fuzhou fujian; 350108, china

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Source :

RSC Advances

Year: 2015

Issue: 98

Volume: 5

Page: 80330-80338

3 . 2 8 9

JCR@2015

3 . 9 0 0

JCR@2023

ESI HC Threshold:265

JCR Journal Grade:2

CAS Journal Grade:3

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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