Surface with poly

Figure 9 An illustration depicting the two methods of interface passivation used here, (a) Reaction (5) alone is inhibited by electropolymerizing a film of insulating PPO, polytp-henyleneoxide-co-2-allylphenyleneoxide), on the Sn02 substrate, (b) Both reactions (4) and (5) are inhibited by coating exposed oxide surfaces with poly(methylsiloxane).

Tao, L., Chen, G., Mantovani, G., York, S., Haddleton, D.M., Modification of multi-wall carbon nanotube surfaces with poly(amidoamine) dendrons Synthesis and metal templating Chem. Commun. (2006), 47, 4949-4951. 

Altankov, G., V. Thom, T. Groth, K. Jankova, G. Jonsson, and M. Ulbricht. 2000. Modulating the biocompatibility of polymer surfaces with poly(ethylene glycol) Effect of fibronectin. / Biomed Mater Res 52 219. 

Popat, K.C., Mor, G., Grimes, C.A., Desai, T.A., 2004. Surface modification of nanoporous alumina surfaces with poly(ethylene glycol). Langmuir 20, 8035—8041. 

Popat KC, Mor G, Grimes CA, Desai TA (2004) Surface modification of nanoporous alumina surfaces with poly(ethylene glycol). Langmuir 20(19) 8035-8041 Pope EA, Braun K, Peterson C (1997) Bioartificial organs I silica gel encapsulated pancreatic islets for the treatment of diabetes mellitus. J Sol-Gel Sci Tech 8(l-3) 635-639 Sakai S, Ono T, Ijima H, Kawakami K (2003) Proliferation and insulin secretion function of mouse insulinoma cells encapsulated in alginate/sol-gel synthesized aminopropyl-silicate/alginate microcapsule. J Sol-Gel Sci Tech 28(2) 267-272... 

Park et al. [44] modified a Pellethane surface with poly(ethylene glycol) (MW) = 1000, PEGlk carrying terminal hydroxyl, amino, and sulfonate groups, respectively, to reduce bacterial adhesion (Fignre 2.8). After modification, the authors measured the dynamic C A before and after hydration using the Wilhelmy plate method. 

Freij-Larsson C, Wesslen B. Grafting of polyurethane surfaces with poly(ethylene glycol). JAppl Polym Sci 1993 50 345-52. http //dx.doi.Org/10.1002/app.1993.070500215. 

Tao L, et al. Modification of multi-wall carbon nanotube surfaces with poly(amidoamine) dendrons synthesis and metal templating. Chem Commun 2006 4949-51. 

Coating Surfaces with Poly(pyrrole) (e.g. Poly(ester), Poly(amide)). 

Modification of Porous Silica Particle Surfaces with Poly(Acrylic Acid)... 

Retention of liposomes in the blood circulation and the resulting accumulation into pathological tissues like tumours can be increased by suppressing the interaction between the liposomes and biocomponents, such as plasma proteins and phagocytic cells. Modification of the liposome surface with poly (ethylene glycol) is one of the most efficient methods to obtain the long retention in the blood circulation. ... 

The simplest condensed phase VER system is a dilute solution of a diatomic in an atomic (e.g. Ar or Xe) liquid or crystal. Other simple systems include neat diatomic liquids or crystals, or a diatomic molecule bound to a surface. A major step up in complexity occurs with poly atomics, with several vibrations on the same molecule. This feature guarantees enonnous qualitative differences between diatomic and polyatomic VER, and casts doubt on the likelihood of understanding poly atomics by studying diatomics alone. 

Fig. 4. Surface of a polysulfone ultrafUtration hoUow-fiber membrane spun with poly-(vinylpyrrohdinone) (3). Surface pore diameter is 0.2—0.4 p.m.

ABS plastic, a polymer consisting of polybutadiene spheroids is dispersed in a continuous phase of poly(styrene—acrylonitrile). The chromic acid attacks the polybutadiene at a much higher rate than the continuous phase. This gives an excellent microroughened surface with superior metal-to-plastic bond strength. A typical recommended formulation consists of 20 vol % sulfuric acid, 420 g/L chromic acid, and 0.1—1.0% of a fluorocarbon wetting agent. The plastic is treated with this formulation for 6—10 min at 60—65°C. 

Phenolic resins are useful surface coating materials. Resols are useful for stoving lacquers for coating chemical plant, textile equipment, razor blades, brassware cuid food cans. Phenolic resins are used with poly(vinyl formal) as a flexible, tough and solvent-resistant wire enamel. Oil-soluble resins based on synthetic phenols form the basis of some gloss paints. 

A number of approaches are available to improve the morphology and homogeneity of electrochemically deposited conducting polymer films. Priming of the electrode surface with a monolayer of adsorbed or covalently bonded monomer leads to more compact deposits of polyaniline,87,88 poly thiophene,80 and polypyrrole.89,90 Electrode rotation has been shown to inhibit the deposition of powdery overlayers during poly(3-methylthiophene) deposition.81... 

Microcapsules can be used for mammalian cell culture and the controlled release of drugs, vaccines, antibiotics and hormones. To prevent the loss of encapsulated materials, the microcapsules should be coated with another polymer that forms a membrane at the bead surface. The most well-known system is the encapsulation of the alginate beads with poly-L-lysine. 

The first example deals with poly[bis(trifluoroethoxy)phosphazene],PTFEP, film, whose surface is intrinsically hydrophobic but can be converted to hydrophilic by the action of NaOH in dioxane at 80 °C in the presence of tetrabutyl-ammonium bromide [514,515], or by metathetical exchange of trifluoroethoxy moieties with variable types of alkoxides groups [482,483,515] (vide supra). 

FIGURE 3 Scanning electron micrograph (1200x magnification) of the surface of a porous alumina particle coated with poly(diphenoxy-phosphazene). Surface nitration, reduction, and glutaric dialdehyde coupling immobilized enzyme molecules to the surface. (From Ref. 23.)... 

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