Polyvinyl sulphonate

Pancreatic ribonuclease is markedly inhibited by heparinoids but not by mucopolysaccharides, with sulphated polyvinyl alcohol >sulphated corn amylosOsulphated cellulose > sulphated corn amylopectin> sulphated dextran, sulphated pectic acid, polyvinyl sulphonate with 2 T 7 per cent sulphur>sulphated nitro chitin, sulphated nitro chitosan and heparin . Single injections of heparin in mice result in significant inhibition of the acid alkaline ribonuclease of the liver after the injection. This probably explains the accumulation of ribonucleic acid in tissue culture cells in the presence of heparin. Heparin also inhibits rat acid phosphatase, glucuronidase , catalase , fumarase and elastase. 

Although no quantitative description has been made after Zotti el al. s work [93], other investigators have described similar observations. Kuramoto el al. [95] reported that the growth rate and structure of electro-polymerized aniline were modified by using sodium polyvinyl sulphonate. Similar observations were made by Hyodo el al. [98], Dhawan and Trivedi [100], and Cordova el al., who used a variety of organic and inorganic electrolyte anions. 

JAD Jadhav, V.B. and Patil, T.J., Influence of polyvinyl sulphonic acid (PVSA) on the thermodynamics of clouding behaviour of non ionic surfactant Tween 80, Oriental J. Chem., 26, 623, 2010. 

Glucose PANI/polyvinyl- sulphonate Glucose oxidase/ horseradish peroxidase Adsorption at the p-doped polymer [171]... 

K. Vasilev, V.R. Sah, R.V. Goreham, C. Ndi, R.D. Short, and H.J. Griesser, Antibacterial surfaces by adsorptive binding of polyvinyl-sulphonate-stabilized silver nanoparticles. Nanotechnology, 21, 215102, 2010. 

Prabhakar N, Sumana G, Arora K, Singh H, Malholra BD (2008) Improved electrochemical nucleic acid biosensor based on polyaniline-polyvinyl sulphonate. Electrochim Acta 53 4344-4350... 

Un-vulcanized CSM/PVC material (chloro sulphonated polyethylene/polyvinyl chloride blend) for autoclave or hot-air vulcanization applied with the two-layer adhesive system. 

A related, but alternative, approach uses layer-by-layer adsorption driven by hydrogen-bonding interactions [51]. This has been accomplished with polyvinylpyrrohdone, polyvinyl alcohol, polyacrylamide, and polyethylene oxide. In the case of polyaniline, comparisons with films assembled via the electrostatic mechanism, using sulphonated polystyrene, indicate that the nonionic polymers adsorb onto polyanihne with a greater density of loops and tails and form highly interpenetrated bilayers with high polyaniline content. 

PDI, pressure driven inside feed PDO, pressure driven outside feed SUBO, submerged vacuum driven sulphone PVP, polyvinyl pyrrolidone PVDF, polyvinylidene fluoride PP, polypropylene. 

Polyvinyl chloride Milk Phthalate esters, CyfJQio alkonephenyl sulphonates Spectrophotometric of 284 nm or spectrophotometric at 470 nm [97- 99]... 

POSS polyhedral oligomeric silsesquioxanes PP polypropylene PPA polyphthalamide ppb parts per billion PPG polyphthalate carbonate PPE polyphenylene ether pph parts per hundred ppm parts per million ppmv parts per million by volume ppmwt parts per million by weight PPO polyphenylene oxide PPPS polyphenylene sulfide sulphone PPS polyphenylene sulfide PPSF polyphenylsulfone PPSU polyphenylene sulphone PPVC plasticized polyvinyl chloride PR public relation PS polystyrene... 

Maki-Arvela (1999) has developed a new polyolefin supported sulphonic acid catalyst for esterification of acetic acid with methanol. The esterification kinetics (pseudo-homogeneous) was modeled with a mechanistic rate equation, the parameters of which were determined by non-linear regression. The esterification rate constant of the most active modification of the new catalyst was 9.6 x 10 ° dm /(mol g min) at 328 K, which clearly exceeds the corresponding value obtained with a traditional (Amberlyst 15) polyvinyl benzene supported catalyst, 1.5 x 10 ° dm /(moP g min). 

We intend to present first a set of experimental data concerning the equilibrium properties (pK, activity of counterions) of polyelectrolytes in salt free solutions in a second part, these results are compared with theoretical values obtained when a rod-like model is adopted in the Lifson-Katchalsky, Manning and Oosawa treatments. The polyelectrolytes tested are respectively polysaccharides (alginic and pectic acids), carboxymethylated derivatives of cellulose (CMC), dextran (CMD), amylose (CMA), and sulphonic derivatives of polyvinyl alcohol. The essential difference between them is local rigidity. It is possible to vary by synthesis the degree of substitution and consequently the linear charge density our data are given for dilute aqueous solutions (2 X 10 N-5 X 10" N) at 25°C. 

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