Polymers particles coated with

Tamai H, Yasuda H (1999) Preparation of polymer particles coated with hydroxyapatite. J Colloid Interface Sd 212(2) 585-588... 

FIGURE 7.17 Polymer particles deforming under the pressure providing a cushioning effect. Polymer particles coated with colloidal silica particles (from Ref 101). 

Otaki, K. Suguro, Y. Electrostatographic developer toners containing polymer particles coated with charge-controlling agent. Jpn. Kokai Tokkyo Koho JP 04039673, 1992 Chem. Abstr. 1992,117, 80023. 

After polymerisation the internal phase consists of polymer particles coated with adsorbed emulsifier. 

Electrophoresis measurements provide a qualitative indication of the assembly of polymer multilayers on colloids [49,50], The -potential as a function of polyelectrolyte layer number for negatively charged polystyrene (PS) particles coated with poly(diallyldimethylam-monium chloride) (PDADMAC) and poly(styrenesulfonate) (PSS) are displayed in Figure... 

Fine Particles Coated with High-Density Polymer Brushes... 

This section reviews studies on the synthesis of fine particles coated with polymer brushes by surface-initiated ATRP. SiP are among the most extensively studied particles for the application of surface-initiated ATRP [85-93]. Patten et al. first succeeded in the surface-initiated ATRP of ST and MMA on two SiPs with average diameters of 75 and 300 nm [85,86]. Several groups investigated the synthesis of hybrid SiP with different monomers. Maty-jaszewski et al. synthesized an initiator-functionalized SiP with a diameter of... 

The most convenient of these methods is viscosity measurement of a liquid in which particles coated with a polymer are dispersed, or measurement of the flow rate of a liquid through a capillary coated with a polymer. Measurement of diffusion coefficients by photon correlation spectroscopy as well as measurement of sedimentation velocity have also been used. Hydrodynamically estimated thicknesses are usually considered to represent the correct thicknesses of the adsorbed polymer layers, but it is worth noting that recent theoretical calculations52, have shown that the hydrodynamic thickness is much greater than the average thickness of loops. 

Fig. 30 Schematic representation - not to scale - of micron-sized colloidal particles coated with DNA strands with interacting sticky ends. Double helices bound to colloids form a 15-nm-thick coating which contributes to particle stability together with polymer brushes. Each helix ends with an 11-based dangling strand, either non-interacting (N) or complementary to the tails on the second type of particle (S, S ). Reproduced with permission from [136]...

Fig. 1 XPS wide-scan spectrum a of copper particles coated with PVFA-co-PVAm (molar mass of the PVFA pre-polymer = 340000 g mol degree of hydrolysis >90%, adsorption at pH = 8). The insets show the C Is (b), N Is (c) and Cu 2p (d) element spectra...

Fig. 20.14 AFM images of a flat Au surface (left) with adsorbed diacetylenic polymer, then coated with deposited Ag particles (right). In the lower panel, the SERS of the polymer is shown. Exciting line 647.1 nm...

Additionally, a progression of the successful coating process is illustrated by SEM (Fig. 2). These images reveal the surface morphology of SBH microparticles during the coating process. Comparison between the particles coated with one and six layers of polyelectrolytes indicates the efficiency of the polymer deposition. Cracks in the particles are completely covered with the polyelectrolytes. As a result, the better protection of metal hydride could be achieved due to blocking of the access to the SBH surface by the deposited polyelectrolyte layers. 

The complex surface chemistry of the metal oxides (section 4.2.1.2) is incompatible with their use in a number of chromatographic techniques. Polymer coated metal oxides are seen as an important approach to extending their scope. Alumina and zirconia particles coated with poly(butadiene), poly(styrene), poly(ethylene oxide), a copolymer of chloromethylstyrene and diethoxymethylvinylsilane and succinylated poly(ethyleneimine), for example, have been prepared for use in reversed-phase, size-exclusion and ion-exchange chromatography [44,46,54,120,134-137]. The methods of preparation are similar to those used for porous silica. 

Shown in Figure 10 are the experimental data for three polymer systems coated with HSA at different bulk concentrations. It is clear that each bulk concentration gives rise to a unique extremum. For example in the case of HSA used at bulk concentrations of 25 mg/ml and 5 mg/ml to coat PTFE particles, maxima... 

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