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001-es BibID:	BIBFORM043728
Első szerző:	Szalóki Melinda (vegyész)
Cím:	Preparation of reactive polymeric nanoparticles / Melinda Szaloki, Robert Scribanek, John F. Hartmann, Csaba Hegedus, Janos Borbely
Dátum:	2006
Megjegyzések:	Polyreactions of multivinyl monomers in emulsion droplets lead to formation of crosslinked macromolecules. In the emulsion polymerization the surfactant-mediated nanoparticles involves the monomers serving as nanoreactors. It prevents gelation while allowing the growth of particles the defined volume. In this study we describe the formation of reactive polymeric nanoparticles (RPNPs) for potential use as dental materials or as a component of industrial powder coatings. As dental filling materials, since the predominant portion of polymerization is performed in advance, limited volumetric shrinking is expected to be observed during the final in situ photopolymerization step. On the other hand no necessary or limited use of toxic monomers is required. The correlation of monomer feed, crosslinking density, particle size, reactivity and swelling behavior of RPNPs is described.
Tárgyszavak:	Természettudományok Kémiai tudományok konferenciacikk Polymeric nanoparticles
Megjelenés:	Polymeric Materials : Science & Engineering. - 94 : 1 (2006), p. 783-784. -
További szerzők:	Skribanek Róbert Hartmann, John F. Hegedűs Csaba (1953-) (fogszakorvos) Borbély János (1950-) (vegyész)
Internet cím:	Szerző által megadott URL Intézményi repozitóriumban (DEA) tárolt változat Szerző által megadott URL
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001-es BibID:	BIBFORM006969
Első szerző:	Szalóki Melinda (vegyész)
Cím:	Preparation of reactive polymeric nanoparticles (RPNPs) / Melinda Szaloki, Robert Skribanek, Zsolt Dudas, John F. Hartmann, Csaba Hegedűs, Janos Borbely
Dátum:	2008
Megjegyzések:	A series of reactive polymeric nanoparticles (RPNPs) was prepared by free radical nonlinear copolymerization of mono (M 1) and trivinyl acrylic (M 2) monomers in miniemulsion. The crosslinking density was determined by the mole ratio of the trivinyl component. It was found that the unswelled latex nanoparticles showed a narrower dispersity than in the organic solution of macromolecules. In latex, the size increased with the ratio of M 2 monomer due to its higher polarity in the aqueous medium. However, the swollen nanoparticles, dissolved or dispersed in organic solvent, showed a higher dispersity as a function of composition and the crosslinking density. The residual vinyl groups adjacent to the nanoparticles were subjected to further crosslinking reactions. The reactive vinyl groups were detected by nuclear magnetic resonance spectroscopy (NMR). The size of particles in swollen state was determined by dynamic laser light scattering (DLS) method and the dried form by scanning electron microscopy (SEM). It was found that size of RPNPs is in the range of 50 to 500 nm. These particles possess properties that may allow their application in areas as disparate as dental filling material and as a component in industrial powder-based coatings.
Tárgyszavak:	Orvostudományok Klinikai orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban Free radical nonlinear polymerization Reactive Polymeric Nanoparticles (RPNPs) Miniemulsion Number average vinyl functionality (NAVF) Crosslinking polymerization
Megjelenés:	Colloid and Polymer Science. - 286 : 4 (2008), p. 435-444. -
További szerzők:	Skribanek Róbert Dudás Zsolt Hartmann, John F. Hegedűs Csaba (1953-) (fogszakorvos) Borbély János (1950-) (vegyész)
Internet cím:	elektronikus változat DOI Szerző által megadott URL
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