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231223s2006 xx ||||| 00| ||eng c |
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|a (NLM)16800701
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Lapitsky, Yakov
|e verfasserin
|4 aut
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| 245 |
1 |
0 |
|a Surfactant and polyelectrolyte gel particles that swell reversibly
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| 264 |
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1 |
|c 2006
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| 336 |
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|a Text
|b txt
|2 rdacontent
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| 337 |
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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 03.08.2007
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|a Date Revised 27.06.2006
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Mixing of oppositely charged surfactants and polyelectrolytes in aqueous solutions can lead to associative phase separation, where the concentrated phase is a viscous liquid, gel, or precipitate. In recent years, this phenomenon has been exploited to form gel-like particles, ranging from approximately 100 to 4000 microm in diameter, whose stability depends on equilibrium phase behavior. As the sample composition is varied, these particles either remain stable (in a two-phase mixture) or dissolve over time. Here, we present the formation of reversibly swelling gel particles from mixtures of N,N,N-trimethylammonium-derivatized hydroxyethyl cellulose (JR-400) and sodium dodecyl sulfate (SDS), whose swelling is controlled by the ambient solution conditions. The effects of cross-linking density and surfactant concentration are investigated by gravimetry and confocal microscopy. The resulting particles have a core/shell morphology and undergo reversible swelling/collapse transitions which, depending on the cross-link density, can be either gradual or abrupt with changing SDS concentration
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|a Journal Article
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1 |
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|a Eskuchen, William J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Kaler, Eric W
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 22(2006), 14 vom: 04. Juli, Seite 6375-9
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:22
|g year:2006
|g number:14
|g day:04
|g month:07
|g pages:6375-9
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|a GBV_ILN_721
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|a AR
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| 952 |
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|d 22
|j 2006
|e 14
|b 04
|c 07
|h 6375-9
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