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231224s2013 xx |||||o 00| ||eng c |
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7 |
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|a 10.1021/la4025537
|2 doi
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|a eng
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| 100 |
1 |
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|a Suzuki, Daisuke
|e verfasserin
|4 aut
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| 245 |
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|a Multilayered composite microgels synthesized by surfactant-free seeded polymerization
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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| 500 |
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|a Date Completed 05.03.2014
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|a Date Revised 20.08.2013
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We report on a simple and rapid method to produce multilayered composite microgels. Thermosensitive microgels were synthesized by aqueous free radical precipitation polymerization using N-isopropylacrylamide (NIPAm) as a monomer. Using the microgels as cores, surfactant-free seeded polymerization of an oil-soluble monomer, glycidyl methacrylate (GMA), was carried out at 70 °C, where the microgels were highly deswollen in water. All of the oil-soluble monomers were polymerized, and the resultant polymers were attached on the pre-existing microgel cores, resulting in hard shell formation. It is worth mentioning that secondary particles of oil-soluble monomers have never been formed during the polymerization. The composite microgels were characterized by electron microscopy and dynamic light scattering. In particular, X-ray photoelectron spectroscopy (XPS) measurements revealed that the surface of the composite microgels was composed of a hydrogel layer, although microgel cores were covered by polyGMA shell. The mechanism of the trilayered composite microgel formation will be discussed
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|a Journal Article
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1 |
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|a Yamagata, Tomoyo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Murai, Masaki
|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 29(2013), 33 vom: 20. Aug., Seite 10579-85
|w (DE-627)NLM098181009
|x 1520-5827
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|g volume:29
|g year:2013
|g number:33
|g day:20
|g month:08
|g pages:10579-85
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|u http://dx.doi.org/10.1021/la4025537
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