Results 1 to 10 of about 225 (97)
International Journal of Polymer Science, Volume 2016, Issue 1, 2016., 2016 Ultrafine nanoparticles, less than 10 nm in mean diameter, of the FDA approved copolymer methyl methacrylate‐ (MMA‐) co‐methacrylic acid (MAA), 2/1 (mol/mol), were prepared. The method used for the preparation of these particles stabilized in a latex containing around 11% solids includes the dosing of the monomers mixture on a micellar solution ...
Henned Saade +8 more
wiley +2 more sources
International Journal of Polymer Science, Volume 2015, Issue 1, 2015., 2015 Nanoparticles of poly(ethyl cyanoacrylate) with more than 10% solids content were prepared by semicontinuous heterophase polymerization at monomer‐starved conditions varying the initial pH in the interval of 1–1.75 and at two monomer dosing rates. Measurements by scanning‐transmission electron microscopy allowed us to identify an inverse dependence of ...
Hened Saade +6 more
wiley +2 more sources
Journal of Nanomaterials, Volume 2016, Issue 1, 2016., 2016 We report the preparation of poly(ethyl cyanoacrylate) (PECA) nanoparticles by semicontinuous heterophase polymerization carried out at monomer starved conditions at three monomer addition rates. Particles in the nanometer range were obtained, the size of which diminishes with decreasing monomer addition rate as shown by the fact that particles with ...
H. Saade +6 more
wiley +1 more source
Chitosan‐Coated Magnetic Nanoparticles with Low Chitosan Content Prepared in One‐Step
Journal of Nanomaterials, Volume 2012, Issue 1, 2012., 2012 Chitosan‐coated magnetic nanoparticles (CMNP) were obtained at 50°C in a one‐step method comprising coprecipitation in the presence of low chitosan content. CMNP showed high magnetization and superparamagnetism. They were composed of a core of 9.5 nm in average diameter and a very thin chitosan layer in accordance with electron microscopy measurements.
Yolanda Osuna +8 more
wiley +1 more source
One‐Step Method for Preparation of Magnetic Nanoparticles Coated with Chitosan
Journal of Nanomaterials, Volume 2012, Issue 1, 2012., 2012 Preparation of magnetic nanoparticles coated with chitosan in one step by the coprecipitation method in the presence of different chitosan concentrations is reported here. Obtaining of magnetic superparamagnetic nanoparticles was confirmed by X‐ray diffraction and magnetic measurements.
Karla M. Gregorio-Jauregui +8 more
wiley +1 more source
Preparation of Silver Nanostructures from Bicontinuous Microemulsions
Journal of Nanomaterials, Volume 2012, Issue 1, 2012., 2012 Precipitation of silver nanoparticles at 70°C was carried out by dosing a 1.3 M sodium borohydride aqueous solution over bicontinuous microemulsions formed with a mixture of sodium bis(2‐ethylhexyl) sulfosuccinate (AOT) and sodium dodecylsulfate (SDS) as surfactants, a 0.5 M silver nitrate aqueous solution, and toluene.
M. A. Pedroza-Toscano +7 more
wiley +1 more source
High‐Yield Synthesis of Zinc Oxide Nanoparticles from Bicontinuous Microemulsions
Journal of Nanomaterials, Volume 2011, Issue 1, 2011., 2011 The high‐yield synthesis of zinc oxide (ZnO) primary nanoparticles with high purity and with diameters between 6 and 22 nm using bicontinuous microemulsions is reported in this work. The ZnO nanoparticles were made by hydrolysis of Zn(NO3)2 with NaOH aqueous solution and precipitation, followed by calcination of the precipitate.
S. López-Cuenca +8 more
wiley +1 more source
Polyisoprene Nanoparticles Prepared by Polymerization in Microemulsion
Journal of Nanomaterials, Volume 2010, Issue 1, 2010., 2010 Batch polymerization of isoprene was carried out at 25∘C in a normal microemulsion stabilized with sodium dodecyl sulfate and initiated with the redox couple tert‐butyl hydroperoxide/tetraethylene‐pentamine. Characterization by transmission electronic microscopy showed that polyisoprene nanoparticles with number‐average diameter close to 20 nm were ...
Y. Apolinar +5 more
wiley +1 more source
[Flexural strength of conventional flowable, bulk fill flowable and highly filled flowable resin composites: in vitro study.] [PDF]
Rev Cient Odontol (Lima), 2023 Sulca Gonzales EL, López-Flores AI.
europepmc +1 more source
Effect of photopolymerization time on the microhardness of resin cement beneath feldspathic ceramic. [PDF]
Acta Odontol Latinoam, 2023 Lei MA, Macchi RL, Picea M.
europepmc +1 more source