Functionalization of Particles
Particles can be functionalized by surface reactions. (RDC 11/18/2010)
Recent US Patents
9/21/2010
7,799,393
Ink-jet media coatings including expoxy-functionalized inorganic particulates and amine-functionalized inorganic particulates
Chen of Hewlett-Packard have developed funtionalized inorgranic particles by treating the particles with silanes attached to the desired functional groups.
7,799,276
Functionalized particles for composite sensors
Hartman-Thompson of the Michigan Molecular Institute fine-tuned polysilane, polysilazenes or silicone membranes with functionalized 1 to 1000 nanometer particles such as silsesquioxanes (POSS) with reactive functional groups. These are reacted to provide the optimum functionality for a specific sensor.
9/7/2010
7,790,780
Radically coupled PTFE polymer powders, and method for the production thereof
Lehmann and Kluepfel of the Leibniz Institute, Germany developed radically coupled PTFE polymer powders useful, for example, as tribomaterials. Radically coupled PTFE polymer powders are are added to PTFE for improved wear resistances Thes modified powders are radiation-chemically or plasma-chemically modified PTFE powders with attached homopolymers, copolymers or terpolymers. (RDC 11/30/2010)
7/20/2010
7,758,928
Functionalisation of particles
Bunce, Parbhoo and Chevalier of Dow Corning have developed a method of treating powders with a functionalizing reagent with a neutral, excited atmospheric pressure plasma in a fluidized bed. The plasma is formed by glow discharge or dielectric barrier discharge. The powders may be metal, ceramic,or organic polymers. (RDC 9/16/2010)
Recent Journal Articles
12/3/1010
Towards a Universal Method for the Stable and Clean Functionalization of Inert Perfluoropolymer Nanoparticles: Exploiting Photopolymerizable Amphiphilic Diacetylenes
(pages 3932–3940)Advanced Functional Materials 20 #22 (2010)
Morasso et al functionalized perfluoropolymer nanoparticles by coating with newly synthesized asymmetric diacetylenic monomer. Other monomers were added to form a robust polymeric shell around the perfluoroelastomer core via a clean UV-promoted localized photopolymerization. (RDC 11/29/2010)
11/19/2010
Efficient Approaches for the Surface Modification of Platinum Nanoparticles via Click Chemistry
(9371–9375) Macromolecules 43 #22 (2010)
Drockenmulle et al attached poly(ethylene glycol) (PEG) or poly(ε-caprolactone) (PCL) onto platinum nanoparticles by a copper(I)-catalyzed azide−alkyne cycloaddition “grafting. Surface-atom transfer radical polymerization, in addtion was used to construct more complex polymer architectures. (RDC 11/18/2010)
11/12/2010
Effect of a Nitroxyle-Based Radical Scavenger on Nanotube Functionalisation with Pentadecane: A Model Compound Study for Polyethylene Grafting onto MWCNTs
(pages 2396–2406) Macromolecular Chemistry and Physics 211 #21 (2010)
Akbar etal incorporated TEMPO as a radical scavenger in the grafting reaction of pentadecane onto MWCNTs. Dicumylperoxide as an alkane hydrogen abstractor promotes the addition of pentadecyl radicals to nanotubes. (RDC 11/10/2010)
10/22/2010
Functionalization of carbon black nanoparticles with poly(vinylidene fluoride)
(pages 4847–4854) Journal of Polymer Science Part A: Polymer Chemistry 48 #21 (2010)
Vukićevićet al treated carbon black with poly(vinylidene fluoride) (PVDF) either by trapping of macroradicals or by cycloaddition. PVDF with two iodine end groups obtained from iodine transfer polymerization in supercritical CO2 .