Sodium Dodecyl Sulfate polymers

Schmidt, V., Giacomelli, C., Soldi, V. Thermal stability of films formed by soy protein isolate-sodium dodecyl sulfate. Polym. Degrad. Stab. 87(1), 25-31 (2005)... 

PL2 Plaksitskaya, T. V., Verezhnikov, V. N., Poyarkova, T. N., Panarina, T. V., and Ivanov, V. N., Spontaneous change in thermosensitive properties of aqueous solutions of poly(MA -dimethylaminoethyl methaciylate) and its mixtures with sodium dodecyl sulfate, Polym. ScL, Ser. A, 49, 1538, 2007. 

Schmidt V, GiacomeUi C, Soldi V. 2005. Thermal Stability of Films Formed by Soy Protein Isolate-Sodium Dodecyl Sulfate. Polymer Degradation and Stabdity 87(1) 25-31. 

The kinetics of vinyl acetate emulsion polymeriza tion in the presence of alkyl phenyl ethoxylate surfactants of various chain lengths indicate that part of the emulsion polymerization occurs in the aqueous phase and part in the particles (115). A study of the emulsion polymerization of vinyl acetate in the presence of sodium lauryl sulfate reveals that a water-soluble poly(vinyl acetate)—sodium dodecyl sulfate polyelectrolyte complex forms, and that latex stabihty, polymer hydrolysis, and molecular weight are controlled by this phenomenon (116). 

Sodium dodecyl sulfate micelle 71,72,77,79 Spin label 139 Starch 100, 104 —, crosslinked 106 —, graft polymers 105, 107, 125, 127 Styrene 160—162 Styrene-divinylbenzene resins 167 Styrenesulfonic acid, copolymers 74—76 Surface area 147... 

The method of Kato and Nakai (27) for determining protein surface hydrophobicity was adapted for evaluating procyanidin binding to BSA and Gl. The procedure is based on the fact that the fluorescence quantum yield of cis-parinaric acid increases 40-fold when cis-parinaric acid enters a hydrophobic environment from a hydrophilic environment. The digestion of BSA by trypsin in the presence of procyanidin dimer, procyanidin trimer and black bean procyanidin polymer was evaluated by discontinuous sodium dodecyl sulfate (SDS) slab gel electrophoresis and a picryl sulfonic acid (TNBS) assay (28). 

Figure 2.17. Forces between the ferrofluid droplets as a function of the interdroplet spacing. The best fits, using Eq. (2.30) are shown by solid lines. Case I Droplets preadsorbed with sodium dodecyl sulfate (SDS) at 8 10 mol/1 and at various PVA-Vac concentrations. The solid line represents the average value of the best fit. Case 11 Droplets preadsorbed with sodium dodecyl sulfate (SDS) at 0.27 10 mol/1. Premixed PVA-SDS was added to the emulsion. In all the cases, the polymer concentration was 0.6 wt%. The surfactant concentrations are indicated in the inset. Case III Droplets preadsorbed with PVA-Vac. In all the cases, the polymer concentration was fixed at 0.6 wt%. The surfactant concentrations are indicated in the inset. (Adapted from [75].)...

E. Staples, I. Tucker, J. Penfold, R.K. Thomas, and D.J.F. Taylor Organization of Polymer-Surfactant Mixtures at the Air-Water Interface Sodium Dodecyl Sulfate and Poly Dimethyldiallylammonium Chloride. Langmuir 18, 5147 (2002). 

An emulsion that is, for instance, stable over many years at low droplet volume fraction may become unstable and coalesce when compressed above a critical osmotic pressure 11. As an example, when an oil-in-water emulsion stabilized with sodium dodecyl sulfate (SDS) is introduced in a dialysis bag and is stressed by the osmotic pressure imposed by an external polymer solution, coarsening occurs through the growth of a few randomly distributed large droplets [8]. A microscopic image of such a growth is shown in Fig. 5.1. 

The phase separation behavior of a sample of poly(N-vinyl-2.pyrrolidone) (PVP) in aqueous Na2S04 (0.55 M) containing a surfactant, sodium dodecyl sulfate (SDS), was reported [83], This phenomenon was studied in function of temperature and surfactant concentration as independent variables. Without surfactant, the polymer exhibits a lower solution temperature (LCST) of 28°C, above which it precipitates. At SDS concentrations of only 300 mg L-1, aggregation was prevented and the behavior of isolated polymer molecules could be studied. 

Basic studies on diazonium-CNT chemistry led to two very efficient techniques for SWCNT derivatization solvent-free functionalization [176] and functionalization of individual (unbundled) nanotubes [175], With the solvent-free functionalization (Scheme 1.26), heavily functionalized and soluble material is obtained and the nanotubes disperse in polymer more efficiently than pristine SWCNTs [176], With the second method, aryldiazonium salts react efficiently with the individual (unbundled) HiPCO produced and sodium dodecyl sulfate (SDS)-coated SWCNTs in water. The resulting functionalized tubes (one addend in nine tube carbons) remained unbundled throughout their entire lengths and were incapable of reroping. [175],... 

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