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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1021/la9018822
|2 doi
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|a eng
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1 |
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|a Saint-Aubin, Karell
|e verfasserin
|4 aut
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| 245 |
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|a Dispersion and film-forming properties of poly(acrylic acid)-stabilized carbon nanotubes
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|c 2009
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|a Text
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|a ƒaComputermedien
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|a Date Completed 21.01.2010
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|a Date Revised 10.11.2009
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a We present a detailed study of the influence of pH on the dispersion and film-forming properties of poly(acrylic acid)-stabilized carbon nanotubes. Poly(acrylic acid) (PAA) is a weak polyelectrolyte, with a pH-responsive behavior in aqueous solution. We obtain quantitative UV-visible measurements to show that the amount of polyelectrolyte in optimal pH conditions is weak, showing a good efficiency of the polymer as a carbon nanotube dispersing agent. The best dispersion conditions are achieved at pH 5, a value close to the pK(a) of PAA. Apart from this tenuous pH value, the PAA is not efficient at stabilizing nanotubes and atomic force microscopy allows us to explain the delicate balance between the PAA adsorption and the suspension stability. This study finally permits optimal conditions for making homogeneous and conductive composite films to be determined
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|a Journal Article
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|a Poulin, Philippe
|e verfasserin
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|a Saadaoui, Hassan
|e verfasserin
|4 aut
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| 700 |
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|a Maugey, Maryse
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zakri, Cécile
|e verfasserin
|4 aut
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
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|g 25(2009), 22 vom: 17. Nov., Seite 13206-11
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