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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"dispersion polymerization"”.
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Non-Aqueous Dispersion Polymerization for Automotive Coating Applications
Non-aqueous dispersion polymerization (NAD) is used to produce submicron sized particles utilized by the solvent-borne automotive coatings industry to prevent crack propagation, improve toughness and reduce energy requirements for drying. Despite its industrial significance, there have been few …
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Remote optical fiber sensing based on reflectance due to the swelling of polymer particles produced by dispersion polymerization
<p>Poly (4-vinyl pyridine) particles produced by dispersion polymerization were suspended in a hydrogel membrane and used for remote measurements employing fiber optic sensors. The refractive index of poly(4-vinyl pyridine) particles is higher than the refractive index of the hydrogel. At low pH, …
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Chemical sensors based on swelling polymer microspheres and uncrosslinked fluorescently-labelled molecularly imprinted polymers
… have been prepared by suspension and dispersion polymerization respectively. For the pH sensor, poly (vinylbenzylchloride) was prepared by suspension polymerization using the Shirazu porous glass (SPG) method. The particles were lightly crosslinked with divinylbenzene followed by …
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Synthesis of polymeric nanocomposites in supercritical carbon dioxide
… concentrations synthesized through in-situ polymerization in supercritical carbon dioxide were investigated. In addition, ferromagnetic nano-particles were synthesized and functionalized for the preparation of nanocomposites. The thermal stability and surface morphology of PMMA/iron oxide …
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Magnetoacoustic chemical sensors based on swellable polymer microspheres
… water loading, and 2-hydroxyethyl methacrylate polymerization.</p><p>Poly(vinylbenzyl chloride) (polyVBC) microspheres were prepared by suspension polymerization and then derivatized to introduce dicarboxylate groups onto the polymer backbone. Poly(vinylbenzyl chloride-trichlorophenyl acrylate) …
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Metal-polymer nanoparticulate systems for externally-controlled delivery
… for these nanocomposites using an aqueous dispersion polymerization method. In addition, nanoparticles of interpenetrating polymer networks (IPN) composed of poly(acrylamide) (PAAm) and poly(acrylic acid) (PAA) were synthesized using a water-in-oil emulsion polymerization. …
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Fabrication, analysis, application, and characterization of core-containing microparticles and hydrophilic microfluidic devices produced via the primary- and in situ tertiary-amine catalyzed Michael addition of multifunctional thiols to multifunctional acrylates
… for the preparation of microparticles via a dispersion polymerization using the primary amine-catalyzed addition of a trithiol to a triacrylate was realized and investigated. Various core materials were microencapsulated via this technique and introduced into appropriate systems to improve …
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Chemical sensors based on swellable polymer microparticles and molecular imprinted polymers
… lightly cross-linked polymer network prepared by dispersion polymerization in water and acetonitrile, respectively. The molecular imprinting of beta-D-glucopyranose and theophylline was achieved by using acrylamide and methacrylic acid (MAA), respectively, as functional monomers.</p><p>The …
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Chemical sensors based on swellable molecularly imprinted polymer microspheres in a hydrogel
… acid) (poly NIPA-AAc) particles by suspension polymerization in a perfluorocarbon solvent using ultrasonic emulsion technique. The particles were crosslinked with 5% of N, N'-methlene-bis-acylamide (MBA) using 20% fluorinated surfactant as a stabilizer. The resulting particles were around 6 mum …
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Tailoring Siloxane Functionality for Lithography-based 3D Printing
… possesses many desirable traits for vat photopolymerization (VP) AM, namely that it proceeds rapidly to high yield, does not undergo significant side reactions, remains tolerant of the presence of water or oxygen, and remains regiospecific. Leveraging these traits, a novel PDMS-based …
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Touch-and-go chemistry: development of materials for and demonstration of a contact-initiated polymerization
… (BPO) groups which co-initiate free radical polymerizations. The mechanism by which they co-initiate requires contact between the DMA and BPO molecules. When DMA and BPO were conjugated to complementary particles, a free radical polymerization was observed following contact between the …