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Showing 1 to 20 of 35 for “"Composite particles"”.
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Emulsion templated assembly of composite particles
Composite particles are attractive multi-constituent systems. Depending on their structure and chemical composition, they can be used for applications such as bio-separation, hetero-catalysis, theragnostic, and antimicrobial application. However, their preparation often presents significant …
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Polypyrrole-containing Composite Particles: Preparation, Characterization and Application
… is focused on preparation of polypyrrole (PPy) composite particles by using socalled template oxidative polymerization method. As a template, water-soluble polymers, polymeric microgels, latex particles or bulk gels can be used. The morphology and properties of the composite particles can be …
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Synthesis and Surface Characterization of Silica-Polypeptide Composite Particles
… surface characterization of silica-polypeptide composite particles is described. Nearly monodisperse colloidal silica cores were obtained by the alkaline hydrolysis of tetraethyl orthosilicate (TEOS). The hydrodynamic radius can be easily controlled in the range of ƒî 20-140 nm by the water/TEOS …
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Engineering composite particles to overcome the poor pharmaceutical performance of paracetamol
… tabletability was the rationale. The modified particles, with the desired behaviour acquired, were characterised using FT−IR, PXRD, laser diffraction, SEM, DSC, TGA, Water absorption profile, flowability, stability, content uniformity, dissolution and tabletability. Tabletabilty data …
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Spatial Structure of the Composite Particles in the 2 + 1 Dimensional U(1) Four-Fermi Model at Finite Chemical Potential
… The spatial structure (form factor) of the composite particle formed as a result of the breaking of the chiral symmetry is calculated under the 1/N approximation and is measured on the lattice. The shape and average size of the composite particle is derived from the form factor measurement. …
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Spatial structure of the composite particles in the 2+1 dimensional U(1) four-fermi model at finite chemical potential
… The spatial structure (form factor) of the composite particle formed as a result of the breaking of the chiral symmetry is calculated under the 1/N approximation and is measured on the lattice. The shape and average size of the composite particle is derived from the form factor measurement. …
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Engineering of composite pharmaceuticals with improved physicochemical and mechanical properties
… therapeutic purpose. Therefore, in this project, composite particles of three drugs (paracetamol, indomethacin, and metformin hydrochloride), which are notoriously known for their poor tabletting and dissolution properties were prepared and investigated to improve their tabletting and dissolution …
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Electrostatic powder deposition as a dry powder process to prepare orodispersible films
… films were prepared using physical mixtures and composite particles of acetaminophen (APAP) and PEO. Films prepared using a physical mixture exhibited significantly higher drug content variability. The active films exhibited favorable mechanical properties due to the plasticizing effect of APAP …
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CHITOSAN PARTICLES FOR THE CONTROLLED RELEASE OF PROTEINS
… of formulations such as films, hydrogels and particles based on its excellent properties such as biodegradable, biocompotable, bioadhesive, permeartion-enhancement, antibiotic, antitumor etc. properties. Among them, chitosan microparticles found a lot of applications in pharmaceutics such as …
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A combined size reduction and liberation model of grinding
… components, including gangue, sphalerite, and composite particles. An excellent agreement between the model predictions and the experimental results has been observed for both monosized and multisized feed materials. The model is capable of handling multiple classes of composite particles for a …
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Fluid dynamics of sinking carbon dioxide hydrate particle releases for direct ocean carbon sequestration
… to form solid partially reacted CO₂ hydrate composite particles (pure hydrate plus unreacted CO₂ and water) with densities several percent above ambient seawater. The most recent field injections at depths of 1500 m in Monterey Canyon resulted in long curved cylinders with diameters - 2.5 cm …
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Composite gelatin delivery system for bone regeneration
… of bone morphogenetic proteins (BMPs) from composite particles. This delivery system, designed to regenerate bone, holds much promise as an alternative to bone grafts. The chemical properties of gelatin were examined through zeta potential measurements, swelling studies, optical microscopy, …
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Modification of nanoparticle surfaces for emulsion stabilization and encapsulation of active molecules for anti-corrosive coatings
… hydrophobization of initially hydrophilic solid particles are investigated. The modified particles are then used for the stabilization of oil-in-water (o/w) emulsions. For all introduced methods electrostatic interactions between strongly or weakly charged groups in the system are es-sential. (i) …
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Inelastic nuclear scattering of strongly absorbed particles
… features of inelastic angular distributions of composite particles are shown explicitly. These include effects of the multipolarity of the transition, the nuclear interaction, the Coulomb force and the shape of the reflection coefficients in angular momentum space. Analyses of representative …
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Luminescent Quantum Dot and Protein Composite Nanoparticles for Bioanalytical Applications
… quantum dot encoded mesoporous silica microparticles. The quantum dots were added in precisely controlled ratios and were stably encapsulated within the pores of the silica. Several experiments were performed to test the superior stability of the quantum dot-silica composites over dye-loaded …
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Combustion dynamics of individual reactive material particles
… processes and mechanisms for both pure metal and composite particles are also desired for their proper implementation in specific applications. Among reactive metals, Al is used most widely and its combustion has been studied extensively. A recently developed experimental setup using laser-ignited …
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Dispersionen für den Korrosionsschutz von Aluminium
… substituted monomer we obtain polymeric nano-particles with phosphate groups on the surface. In a first step cross-linked butyl acrylate/styrene particles were formed. In a second step a mixture of functionalised acrylate and butyl acrylate/styrene was added to the system. In this way, the …
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Control of crystalline particle properties by spray drying
… nozzle was used to produce multicomponent composite particles comprising of two crystallite phases. The effect of process configuration and material properties on the resultant particles was assessed using particle sizing, SEM, XRPD and Raman mapping. The results were compared on the basis …
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Comprehensive Study of Semicontinuous Emulsion Polymerisation Processes for Producing Nanoparticles
… scanning calorimetry. Morphologies of particles were investigated by transmission electron microscopy and scanning electron microscopy. Semcontinuous microemulsion polymerisation of styrene has first been carried out in order to study the true features of nucleation stage. A major step …
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Morphological study of composite latex particles and water interaction with polymer chains
… of this research was the morphological study of composite polymer (2 or more) nano-particles in an aqueous dispersed system. This included synthesis, characterization and mathematical/numerical modeling. For a composite latex particle, the morphology can play an important role in determining the …
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