Coiled coils polyethylene glycol

The same considerations can be applied in regard to the initiator concentration. In the extreme case, the initiator can be adsorbed by the template coils or can be a part of the template. Bamford has suggested initiation of polymerization by the end-groups of the polyvinyl alcohol template. Also, polyethylene glycol with azo-groups has been used for initiation of template polymerization of methacrylic acid. Initiation was possible... 

Condensation of DNA induced by neutral polymer has been actively studied and is defined in terms of polymer-salt induced condensation, or (psai)-condensation (Lerman, 1971 Ubbink and Odijk, 1995 Evdokimov et al., 1976). Actually, in 1 1 salt solution, such as NaCl solution, DNA molecules are condensed by the addition of neutral hydrophilic polymers, such as polyethylene glycol (PEG) and polyvinylpyrrolidone. It was suggested that the collapse of the DNA coil was caused by the osmotic... 

A. 10% (by weight) polyethylene glycol suspended on 44/60 mesh firebrick used at a temperature of 55° and a nitrogen flow rate of 50 cc. per minute. Column length was 12 feet, the diameter 4 mm., and the material coiled copper tubing. 

The cross-axis CPC produces a unique mode of planetary motion, such that the column holder rotates about its horizontal axis while revolving around the vertical axis of the centrifuge.This motion provides satisfactory retention of the stationary phase for viscous, low-interfacial tension, two-phase solvent systems, such as aqueous-aqueous polymer phase systems. Our previous studies demonstrated that the cross-axis CPC equipped with a pair of multiplayer coils or eccentric coil assemblies in the off-center position was very useful for the separation of proteins with polyethylene glycol-potassium phosphate solvent systems.The apparatus is also useful for the separation of highly polar compounds such as sugars,hippuric acid, and related compounds, which require the use of polar two-phase solvent systems. 

Shibusawa, Y. Ito, Y. Countercurrent chromatography of proteins with polyethylene glycol-dextran polymer phase systems using type-XLLL cross-axis coil planet centrifuge. J. Liq. Chromatogr. 1992, 15, 2787. 

Wang W, Liu R, Li Z, Meng C, Wu Q, Zhu F (2010) Synthesis and self-assembly of new double-crystalline amphiphilic polyethylene-h/ock-poly[oligo(ethylene glycol) methyl ether methacrylate] coil-brush diblock copolymer. Macromol Chem Phys 211 1452-1459... 

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