| Encapsulation of polystyrene latex with temperature-responsive poly(N-isopropylacrylamide) via a self-assembling approach and the adsorption behaviors therein. | |
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MedLine Citation:
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PMID: 15952827 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Temperature-responsive poly(N-isopropylacrylamide) (PNIPAm)-encapsulated polystyrene latex was prepared via a layer-by-layer self-assembly of cationic and anionic polyNIPAms alternately. Studies showed that the size of PNIPAm-encapsulated polystyrene particles (m-PS) increased with the encapsulation manipulation, as verified by both transmission electron microscopy and dynamic light scattering measurements. The m-PS underwent a dramatic volume decrease at the lower critical solution temperature (LCST) of PNIPAm, with the onset temperature shifting to a higher temperature range as the number of encapsulating layers increased. A qualitative study on the adsorption behavior of Ag nanoparticles revealed that while the pristine (p) Ag nanoparticles were predominantly adsorbed on the m-PS below the LCST, the hydrophobically modified one (m-Ag) was preferentially adsorbed on the same PS above the LCST, which corresponded to the hydrophilic to hydrophobic transition of the m-PS at the LCST. |
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Authors:
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Qunhui Sun; Yulin Deng |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: 21 ISSN: 0743-7463 ISO Abbreviation: Langmuir Publication Date: 2005 Jun |
Date Detail:
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Created Date: 2005-06-14 Completed Date: 2006-06-23 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
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Languages: eng Pagination: 5812-6 Citation Subset: IM |
Affiliation:
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School of Chemical & Biomolecular Engineering and IPST at GT, Georgia Institute of Technology, Atlanta, Georgia 30332-0620, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Acrylic Resins
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chemistry* Adsorption Latex* Models, Molecular Nanostructures / chemistry Polystyrenes* Silver / chemistry Thermodynamics |
| Chemical | |
Reg. No./Substance:
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0/Acrylic Resins; 0/Latex; 0/Polystyrenes; 25189-55-3/poly-N-isopropylacrylamide; 7440-22-4/Silver |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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