Rings and loops in perflurosurfactants viscoelastic solutions

I. Ionita-Abutbul; L. Abezgauz; D. Danino; H. Hoffmann

doi:10.1016/j.colsurfa.2015.07.026

Rings and loops in perflurosurfactants viscoelastic solutions

I. Ionita-Abutbul, L. Abezgauz, D. Danino, H. Hoffmann^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

The structure of micellar solutions has been a topic of intense research. Of particular interest is the relation between rheological properties and the nanostructure of the corresponding micelles. At compositions surrounding the 2nd CMC, the onset of micellar growth, spherical micelles typically transition into short rodlike micelles, and these assemblies continue to grow into long, entangled threadlike micelles, avoiding micellar ends. Another possibility to avoid unfavorable micellar ends is to form small closed structures-rings and loops. Here, we disclose with cryo-TEM the formation of these assemblies near the 2nd CMC, for a perfluorosurfactant C₈F₁₇SO₃N(C₂H₅)₄, and we correlate the observations with electric birefringence (EB) data that show 4 separate processes near that critical composition.

Original language	English
Pages (from-to)	150-154
Number of pages	5
Journal	Colloids and Surfaces A: Physicochemical and Engineering Aspects
Volume	483
DOIs	https://doi.org/10.1016/j.colsurfa.2015.07.026
State	Published - 20 Oct 2015
Externally published	Yes

Keywords

Cryo-TEM
Electric birefringence
Micelles
Second CMC
Viscosity

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10.1016/j.colsurfa.2015.07.026

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title = "Rings and loops in perflurosurfactants viscoelastic solutions",

abstract = "The structure of micellar solutions has been a topic of intense research. Of particular interest is the relation between rheological properties and the nanostructure of the corresponding micelles. At compositions surrounding the 2nd CMC, the onset of micellar growth, spherical micelles typically transition into short rodlike micelles, and these assemblies continue to grow into long, entangled threadlike micelles, avoiding micellar ends. Another possibility to avoid unfavorable micellar ends is to form small closed structures-rings and loops. Here, we disclose with cryo-TEM the formation of these assemblies near the 2nd CMC, for a perfluorosurfactant C8F17SO3N(C2H5)4, and we correlate the observations with electric birefringence (EB) data that show 4 separate processes near that critical composition.",

keywords = "Cryo-TEM, Electric birefringence, Micelles, Second CMC, Viscosity",

author = "I. Ionita-Abutbul and L. Abezgauz and D. Danino and H. Hoffmann",

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doi = "10.1016/j.colsurfa.2015.07.026",

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TY - JOUR

T1 - Rings and loops in perflurosurfactants viscoelastic solutions

AU - Ionita-Abutbul, I.

AU - Abezgauz, L.

AU - Danino, D.

AU - Hoffmann, H.

PY - 2015/10/20

Y1 - 2015/10/20

N2 - The structure of micellar solutions has been a topic of intense research. Of particular interest is the relation between rheological properties and the nanostructure of the corresponding micelles. At compositions surrounding the 2nd CMC, the onset of micellar growth, spherical micelles typically transition into short rodlike micelles, and these assemblies continue to grow into long, entangled threadlike micelles, avoiding micellar ends. Another possibility to avoid unfavorable micellar ends is to form small closed structures-rings and loops. Here, we disclose with cryo-TEM the formation of these assemblies near the 2nd CMC, for a perfluorosurfactant C8F17SO3N(C2H5)4, and we correlate the observations with electric birefringence (EB) data that show 4 separate processes near that critical composition.

AB - The structure of micellar solutions has been a topic of intense research. Of particular interest is the relation between rheological properties and the nanostructure of the corresponding micelles. At compositions surrounding the 2nd CMC, the onset of micellar growth, spherical micelles typically transition into short rodlike micelles, and these assemblies continue to grow into long, entangled threadlike micelles, avoiding micellar ends. Another possibility to avoid unfavorable micellar ends is to form small closed structures-rings and loops. Here, we disclose with cryo-TEM the formation of these assemblies near the 2nd CMC, for a perfluorosurfactant C8F17SO3N(C2H5)4, and we correlate the observations with electric birefringence (EB) data that show 4 separate processes near that critical composition.

KW - Cryo-TEM

KW - Electric birefringence

KW - Micelles

KW - Second CMC

KW - Viscosity

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U2 - 10.1016/j.colsurfa.2015.07.026

DO - 10.1016/j.colsurfa.2015.07.026

M3 - 文章

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SN - 0927-7757

VL - 483

SP - 150

EP - 154

JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects

JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects

ER -

Rings and loops in perflurosurfactants viscoelastic solutions

Abstract

Keywords

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