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231223s2009 xx ||||| 00| ||eng c |
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|a pubmed24n0637.xml
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|a (DE-627)NLM190992204
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|a (NLM)19714821
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Grillo, I
|e verfasserin
|4 aut
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| 245 |
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|a Spontaneous formation of nanovesicles in mixtures of nonionic and dialkyl chain cationic surfactants studied by surface tension and SANS
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| 264 |
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 22.09.2009
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|a Date Revised 27.10.2019
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Surface tension and small-angle neutron scattering have been used to characterize the surface properties and the structure of the aggregates formed in the dilute part of the ternary system didodecyldimethyl ammonium bromide, DDAB/tetraethylene glycol monododecyl ether, C12E4/D2O. For surfactant molar ratios, Rn, between 0.3 and 1 (pure DDAB), the surface tension measurements show the existence of two break points at concentrations of around 10(-5) and 10(-3) mol/L, respectively. The SANS measurements have shown that the first break point corresponds to a critical micellar concentration (cmc) and the second one corresponds to a critical vesicle concentration (cvc). In the intermediate composition range, Rn = 0.3-0.8, very small unilamellar vesicles (nanovesicles) are formed with the inner radius varying between 28 and 85 A and a bilayer thickness of approximately 23 A. At Rn = 0.8, we observed a transition from small vesicles (V) to large bilamellar or multilamellar vesicles (BLV, MLV) with a relatively large lamellar periodicity of around 1000 A. In the nonionic-rich region below Rn = 0.3, more classical surface tension behavior was observed, with only one break point corresponding to the onset of formation of small globular micelles
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|a Journal Article
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1 |
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|a Penfold, J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tucker, I
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cousin, F
|e verfasserin
|4 aut
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| 773 |
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8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 25(2009), 7 vom: 07. Apr., Seite 3932-43
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:25
|g year:2009
|g number:7
|g day:07
|g month:04
|g pages:3932-43
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| 912 |
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|a GBV_NLM
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| 912 |
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|a GBV_ILN_22
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| 912 |
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|a GBV_ILN_350
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| 912 |
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|a GBV_ILN_721
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| 951 |
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|a AR
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| 952 |
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|d 25
|j 2009
|e 7
|b 07
|c 04
|h 3932-43
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