Colloid and Polymer ScienceThis is an RSS file. You can use it to subscribe to this data in your favourite RSS reader, such as GoogleReader, or to display this data on your own website or blog. Subscribe to this data using MyMedWorm.Subscribe to this data using GoogleReader.Subscribe to this data using Bloglines.Subscribe to this data using MyYahoo.

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Synthesis of phosphonate-functionalized polystyrene and poly(methyl methacrylate) particles and their kinetic behavior in miniemulsion polymerization.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Phosphonate-functionalized polymer nanoparticles were synthesized by free-radical copolymerization of vinylphosphonic acid (VPA) with styrene or methyl methacrylate (MMA) using the miniemulsion technique. The influence of different parameters such as monomer and surfactant type, amount of vinylphosphonic acid on the average particle size, and size distribution was studied using dynamic light scattering and transmission electron microscopy. Depending on the amount and type of the surfactant used (ionic or non-ionic), phosphonate-functionalized particles in a size range from 102 to 312 nm can be obtained. The density of ...
Source: Colloid and Polymer Science - October 25, 2009 Category: Biotechnology Authors: Ziegler A, Landfester K, Musyanovych A Tags: Colloid Polym Sci Source Type: journals

Miscibility of sodium chloride and sodium dodecyl sulfate in the adsorbed film and aggregate.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
The adsorption, micelle formation, and salting out of sodium dodecyl sulfate in the presence of sodium chloride were studied from the viewpoint of their mixed adsorption and aggregate formation. The surface tension of aqueous solutions of a sodium chloride-sodium dodecyl sulfate mixture was measured as a function of the total molality and composition of the mixture. Phase diagrams of adsorption and aggregate formation were obtained by applying thermodynamic equations to the surface tension. Judging from the phase diagrams, sodium chloride and sodium dodecyl sulfate are miscible in the adsorbed film at very large compos...
Source: Colloid and Polymer Science - March 31, 2009 Category: Biotechnology Authors: Iyota H, Krastev R Tags: Colloid Polym Sci Source Type: journals

Templating hydrogels.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Templating processes for creating polymerized hydrogels are reviewed. The use of contact photonic crystals and of non-contact colloidal crystalline arrays as templates are described and applications to chemical sensing and device fabrication are illustrated. Emulsion templating is illustrated in the formation of microporous membranes, and templating on reverse emulsions and double emulsions is described. Templating in solutions of macromolecules and micelles is discussed and then various applications of hydrogel templating on surfactant liquid crystalline mesophases are illustrated, including a nanoscale analogue of co...
Source: Colloid and Polymer Science - March 1, 2009 Category: Biotechnology Authors: Texter J Tags: Colloid Polym Sci Source Type: journals

Interaction of cylindrical polymer brushes in dilute and semi-dilute solution.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
We present a systematic study of flexible cylindrical brush-shaped macromolecules in a good solvent by small-angle neutron scattering (SANS), static light scattering (SLS), and by dynamic light scattering (DLS) in dilute and semi-dilute solution. The SLS and SANS data extrapolated to infinite dilution lead to the shape of the polymer that can be modeled in terms of a worm-like chain with a contour length of 380 nm and a persistence length of 17.5 nm. SANS data taken at higher polymer concentration were evaluated by using the polymer reference interaction site model (PRISM). We find that the persistence length reduce from 1...
Source: Colloid and Polymer Science - February 1, 2009 Category: Biotechnology Authors: Bolisetty S, Rosenfeldt S, Rochette CN, Harnau L, Lindner P, Xu Y, Müller AH, Ballauff M Tags: Colloid Polym Sci Source Type: journals

Size Controlled Synthesis of Monodispersed, Core/Shell Nanogels.Email this article to a colleague. Save this article to My Clippings. Discuss or comment on this article.
Small, monodispersed nanogels (~ 50-nm radius) were synthesized by free-radical precipitation polymerization and characterized using a suite of light scattering and chromatography methods. Nanogels were synthesized with either N-isopropylacrylamide or N-isopropylmethacrylamide as the main monomer, with acrylic acid or 4-acrylamidofluorescein as a co-monomer and N, N'-methylenebis(acrylamide) as a cross-linker. By varying the surfactant and initiator concentrations, particle size was controlled while maintaining excellent monodispersity. An amine-containing shell was added to these core particles to facilitate subsequen...
Source: Colloid and Polymer Science - September 17, 2008 Category: Biotechnology Authors: Blackburn WH, Lyon LA Tags: Colloid Polym Sci Source Type: journals