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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1021/la502826r
|2 doi
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|a eng
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|a Piçarra, Susana
|e verfasserin
|4 aut
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|a Smart polymer nanoparticles for high-performance water-borne coatings
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|c 2014
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|a Text
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 21.05.2015
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|a Date Revised 21.10.2014
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Poly(butyl methacrylate) nanoparticles encapsulating a silica precursor, tetraethoxysilane (TEOS), were synthesized by a two-step emulsion polymerization process. We show that TEOS remains mostly unreacted inside the nanoparticles in water but acts both as a plasticizer and cross-linker in films cast from the dispersions. The diffusion-enhancing plasticizing effect is dominant at annealing temperatures closer to the glass-transition temperature of the polymer, and sol-gel cross-linking reactions predominate at higher temperatures. By choosing an appropriate annealing temperature, we were able to balance polymer interdiffusion and silica cross-linking to obtain films with good mechanical properties and excellent chemical resistance. The hybrid cross-linked films produced from these novel "smart" nanoparticles can be used in water-borne environmentally friendly coatings for high-performance applications
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|a Journal Article
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|a Fidalgo, Alexandra
|e verfasserin
|4 aut
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|a Fedorov, Aleksander
|e verfasserin
|4 aut
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|a Martinho, José M G
|e verfasserin
|4 aut
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|a Farinha, José Paulo S
|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 1999
|g 30(2014), 41 vom: 21. Okt., Seite 12345-53
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|x 1520-5827
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|g volume:30
|g year:2014
|g number:41
|g day:21
|g month:10
|g pages:12345-53
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|u http://dx.doi.org/10.1021/la502826r
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