Effect of density fluctuating supercritical carbon dioxide on polymer interfaces

We investigated an effect of CO2 sorption on the compatibility of immiscible polystyrene (PS) and polybutadiene (PB) bilayers by using in situ neutron reflectivity. By labeling either polymer with deuterium, we found that the excess CO2 molecules were adsorbed to both top PS and bottom PB layers whe...

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Veröffentlicht in:Langmuir : the ACS journal of surfaces and colloids. - 1992. - 21(2005), 14 vom: 05. Juli, Seite 6157-60
1. Verfasser: Koga, Tadanori (VerfasserIn)
Weitere Verfasser: Jerome, J L, Seo, Y-S, Rafailovich, M H, Sokolov, J C, Satija, S K
Format: Aufsatz
Sprache:English
Veröffentlicht: 2005
Zugriff auf das übergeordnete Werk:Langmuir : the ACS journal of surfaces and colloids
Schlagworte:Journal Article
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520 |a We investigated an effect of CO2 sorption on the compatibility of immiscible polystyrene (PS) and polybutadiene (PB) bilayers by using in situ neutron reflectivity. By labeling either polymer with deuterium, we found that the excess CO2 molecules were adsorbed to both top PS and bottom PB layers when the bilayers were exposed to CO2 at the narrow T and P regime near the critical point of pure CO2. Furthermore, we clarified that this excess sorption of CO2 molecules increased the interfacial width between the layers up to 100 angstroms even near room temperature, while the interfacial width without CO2 exposure has been reported to be at most 40 A even at the highest temperature (T congruent with 175 degrees C) 
650 4 |a Journal Article 
700 1 |a Jerome, J L  |e verfasserin  |4 aut 
700 1 |a Seo, Y-S  |e verfasserin  |4 aut 
700 1 |a Rafailovich, M H  |e verfasserin  |4 aut 
700 1 |a Sokolov, J C  |e verfasserin  |4 aut 
700 1 |a Satija, S K  |e verfasserin  |4 aut 
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