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231223s2010 xx |||||o 00| ||eng c |
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|a 10.1021/la102298x
|2 doi
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|a eng
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| 100 |
1 |
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|a Lee, Daniel
|e verfasserin
|4 aut
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|a Solid-state nuclear magnetic resonance studies of vinyl polymer/silica colloidal nanocomposite particles
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|c 2010
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a Date Completed 03.01.2011
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|a Date Revised 29.09.2010
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a Solid-state nuclear magnetic resonance (NMR) has been used to characterize the interface between the organic and inorganic components of "core-shell" colloidal nanocomposite particles synthesized by in situ aqueous (co)polymerization of styrene and/or n-butyl acrylate in the presence of a glycerol-functionalized silica sol. Polymer protons are in close proximity (<5 A) to surface silanol sites in all the nanocomposites studied, indicating that either styrene or n-butyl side groups extend between the glycerol-functional silane molecules toward the surface of the silica particles. For the poly(styrene-co-n-butyl acrylate)/silica nanocomposite n-butyl acrylate residues are located closer to the surface of the silica particle than styrene residues, suggesting a specific interaction between the former and the glycerol-functionalized silica surface. The most likely explanation is a hydrogen bond between the ester carbonyl and the glycerol groups, although this cannot be observed directly. For the Bindzil CC40 glycerol-functionalized silica sol the relative intensities of (29)Si NMR lines corresponding to T and Q(3) environments imply that there are approximately twice as many unreacted silanol groups on the silica surface as attached silane molecules
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|a Journal Article
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1 |
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|a Balmer, Jennifer A
|e verfasserin
|4 aut
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1 |
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|a Schmid, Andreas
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Tonnar, Jeff
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Armes, Steven P
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Titman, Jeremy J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 26(2010), 19 vom: 05. Okt., Seite 15592-8
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|x 1520-5827
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|g volume:26
|g year:2010
|g number:19
|g day:05
|g month:10
|g pages:15592-8
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|u http://dx.doi.org/10.1021/la102298x
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