Effective and efficient surfactant for CO 2 having only short fluorocarbon chains

Masanobu Sagisaka; Shuho Iwama; Atsushi Yoshizawa; Azmi Mohamed; Stephen Cummings; Julian Eastoe

doi:10.1021/la301305q

Effective and efficient surfactant for CO ₂ having only short fluorocarbon chains

Masanobu Sagisaka^*, Shuho Iwama, Atsushi Yoshizawa, Azmi Mohamed, Stephen Cummings, Julian Eastoe

^*Corresponding author for this work

Research output: Contribution to journal › Article (Academic Journal) › peer-review

33 Citations (Scopus)

Abstract

A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO) ₂ to act as a superefficient solubilizer for water in supercritical CO ₂ (W/CO ₂) microemulsions. To explore more economic CO ₂-philic surfactants with high solubilizing power as well as rapid solubilization rates, the effects of fluorocarbon chain length and linking group were examined with sodium 1,5-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO) ₂, fluorocarbon chain length n = 4, 6, 8) and sodium 1,4-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,4-dioxobutane-2-sulfonate (nFS(EO) ₂, n = 4, 8). Visual observation and UV-vis spectral measurements with methyl orange as a reporter dye indicated a maximum water-to-surfactant molar ratio (W ₀) in the microemulsions, which was 60-80 for nFG(EO) ₂ and 40-50 for nFG(EO) ₂. Although it is normally expected that high solubilizing power requires long fluorocarbon surfactant chains, the shortest fluorocarbon 4FG(EO) ₂ interestingly achieved the highest W ₀ (80) transparent single-phase W/CO ₂ microemulsion. In addition, a very rapid solubilization of loaded water into CO ₂ was observed for 4FG(EO) ₂ even at a high W ₀ of ∼80.

Original language	English
Pages (from-to)	10988-10996
Number of pages	9
Journal	Langmuir
Volume	28
Issue number	30
DOIs	https://doi.org/10.1021/la301305q
Publication status	Published - 31 Jul 2012

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@article{a857ef4f0c764f48ba78628e59d2760c,

title = "Effective and efficient surfactant for CO 2 having only short fluorocarbon chains",

abstract = "A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO) 2 to act as a superefficient solubilizer for water in supercritical CO 2 (W/CO 2) microemulsions. To explore more economic CO 2-philic surfactants with high solubilizing power as well as rapid solubilization rates, the effects of fluorocarbon chain length and linking group were examined with sodium 1,5-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO) 2, fluorocarbon chain length n = 4, 6, 8) and sodium 1,4-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,4-dioxobutane-2-sulfonate (nFS(EO) 2, n = 4, 8). Visual observation and UV-vis spectral measurements with methyl orange as a reporter dye indicated a maximum water-to-surfactant molar ratio (W 0) in the microemulsions, which was 60-80 for nFG(EO) 2 and 40-50 for nFG(EO) 2. Although it is normally expected that high solubilizing power requires long fluorocarbon surfactant chains, the shortest fluorocarbon 4FG(EO) 2 interestingly achieved the highest W 0 (80) transparent single-phase W/CO 2 microemulsion. In addition, a very rapid solubilization of loaded water into CO 2 was observed for 4FG(EO) 2 even at a high W 0 of ∼80.",

author = "Masanobu Sagisaka and Shuho Iwama and Atsushi Yoshizawa and Azmi Mohamed and Stephen Cummings and Julian Eastoe",

year = "2012",

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T1 - Effective and efficient surfactant for CO 2 having only short fluorocarbon chains

AU - Sagisaka, Masanobu

AU - Iwama, Shuho

AU - Yoshizawa, Atsushi

AU - Mohamed, Azmi

AU - Cummings, Stephen

AU - Eastoe, Julian

PY - 2012/7/31

Y1 - 2012/7/31

N2 - A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO) 2 to act as a superefficient solubilizer for water in supercritical CO 2 (W/CO 2) microemulsions. To explore more economic CO 2-philic surfactants with high solubilizing power as well as rapid solubilization rates, the effects of fluorocarbon chain length and linking group were examined with sodium 1,5-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO) 2, fluorocarbon chain length n = 4, 6, 8) and sodium 1,4-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,4-dioxobutane-2-sulfonate (nFS(EO) 2, n = 4, 8). Visual observation and UV-vis spectral measurements with methyl orange as a reporter dye indicated a maximum water-to-surfactant molar ratio (W 0) in the microemulsions, which was 60-80 for nFG(EO) 2 and 40-50 for nFG(EO) 2. Although it is normally expected that high solubilizing power requires long fluorocarbon surfactant chains, the shortest fluorocarbon 4FG(EO) 2 interestingly achieved the highest W 0 (80) transparent single-phase W/CO 2 microemulsion. In addition, a very rapid solubilization of loaded water into CO 2 was observed for 4FG(EO) 2 even at a high W 0 of ∼80.

AB - A previous study (Langmuir2011, 27, 5772) found the fluorinated double-tail sulfogulutarate 8FG(EO) 2 to act as a superefficient solubilizer for water in supercritical CO 2 (W/CO 2) microemulsions. To explore more economic CO 2-philic surfactants with high solubilizing power as well as rapid solubilization rates, the effects of fluorocarbon chain length and linking group were examined with sodium 1,5-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,5-dioxopentane-2-sulfonates (nFG(EO) 2, fluorocarbon chain length n = 4, 6, 8) and sodium 1,4-bis(1H,1H,2H,2H- perfluoroalkyloxy)-1,4-dioxobutane-2-sulfonate (nFS(EO) 2, n = 4, 8). Visual observation and UV-vis spectral measurements with methyl orange as a reporter dye indicated a maximum water-to-surfactant molar ratio (W 0) in the microemulsions, which was 60-80 for nFG(EO) 2 and 40-50 for nFG(EO) 2. Although it is normally expected that high solubilizing power requires long fluorocarbon surfactant chains, the shortest fluorocarbon 4FG(EO) 2 interestingly achieved the highest W 0 (80) transparent single-phase W/CO 2 microemulsion. In addition, a very rapid solubilization of loaded water into CO 2 was observed for 4FG(EO) 2 even at a high W 0 of ∼80.

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U2 - 10.1021/la301305q

DO - 10.1021/la301305q

M3 - Article (Academic Journal)

C2 - 22738302

AN - SCOPUS:84864458354

SN - 0743-7463

VL - 28

SP - 10988

EP - 10996

JO - Langmuir

JF - Langmuir

IS - 30

ER -

Effective and efficient surfactant for CO ₂ having only short fluorocarbon chains

Abstract

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Reverse engineering and synthesis of self-assembling photo-responsive surfactants for CO2 solubilization

NEUTRON SCATTERING STUDIES OF CO2-BASED GELS

OXIDATION OF HYDROCARBONS IN SUPERCRITICAL MEDIA

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Effective and efficient surfactant for CO 2 having only short fluorocarbon chains

Abstract

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Reverse engineering and synthesis of self-assembling photo-responsive surfactants for CO2 solubilization

NEUTRON SCATTERING STUDIES OF CO2-BASED GELS

OXIDATION OF HYDROCARBONS IN SUPERCRITICAL MEDIA

Cite this

Effective and efficient surfactant for CO ₂ having only short fluorocarbon chains