Results 251 to 260 of about 2,270,542 (300)

Surface active properties of chitosan and its derivatives

Colloids and Surfaces B: Biointerfaces, 2009
This review discusses the definition of surface active agents and specifically natural polymeric surface active agents. Chitosan by itself was found to have weak surface activity since it has no hydrophobic segments. Chemical modifications of chitosan could improve such surface activity.
Maher Z, Elsabee, Rania Elsayed, Morsi, A M, Al-Sabagh   +2 more
openaire   +4 more sources

Some toxicological properties of surface-active agents

Journal of the American Pharmaceutical Association (Scientific ed.), 1949
The toxicological properties of several surface-active agents have been investigated. It has been demonstrated that acute toxicity by vein and by mouth are unrelated. Neither are acute and subacute oral toxicity related quantitatively. Blood pressure effects have not been found to be important factors in intravenous toxicity.
S S, HOPPER, H R, HULPIEU, V V, COLE
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Surface-active properties of vasoactive intestinal peptide☆

Peptides, 2000
The purpose of this study was to determine whether human vasoactive intestinal peptide (VIP) aggregates in aqueous solution and, if so, whether the peptide interacts with a biomimetic phospholipid monolayer and increases surface pressure. Using a custom-made Teflon trough containing HEPES buffer (pH 7.4) at room temperature and a surface tensiometer ...
H, Onyüksel, B, Bodalia, V, Sethi, S, Dagar, I, Rubinsteina   +4 more
openaire   +2 more sources

Surface-active properties and physiological activity of systems chitosan succinamide–surface-active substance

Inorganic Materials: Applied Research, 2017
The effect of water-soluble polymer—chitosan succinamide—on surface activity of such commonly used surfactants as anionic sodium dodecylsulfate and nonionic TWEEN-80 is investigated. It is shown that the combined use of sodium dodecylsulfate and TWEEN-80 with chitosan succinamide increases the surface activity of the investigated surfactants.
M. V. Bazunova, F. R. Gimaeva, R. A. Mustakimov, V. G. Shamratova, L. A. Sharafutdinova, E. I. Kulish   +5 more
openaire   +1 more source

Surface-active properties of 1,2-distearolygalactosylglycerols

Journal of Colloid and Interface Science, 1983
Abstract The surface-active properties of 1,2-distearoylmono- and digalactosylglycerols were examined by monomolecular film techniques and shadow-cast electron microscopy. The monogalactosyl lipid forms a typically condensed monolayer upon compression but at low surface densities a mosaic of condensed and liquid-expanded regions is formed, which is ...
Maria Tomoaia-Cotisel, Arindam Sen, Peter J Quinn   +2 more
openaire   +1 more source

Surface rheological properties of polymer‐surface active agent solutions

The Canadian Journal of Chemical Engineering, 1971
AbstractThe rheological properties of the surface of two anionic and a nonionic water soluble polymer solutions in the presence of alkylarylsulfonate and lauryl alcohol were studied. Changes in the properties of the surface after degradation with ozone were also investigated.
J. Vocel, J. T. Ryan
openaire   +1 more source

Surface properties and emulsification activity of galactomannans

Food Hydrocolloids, 1994
Abstract Galactomannans are considered to be predominantly hydrophilic carbohydrate polymers (gums) with a rigid backbone. The gums are not expected to have significant surface activity nor to form primary adsorbed layers on oil—water interfaces. However, it was found that commercial, native LBG and guar gum reduce surface tension of water to ~55 mN ...
Nissim Garti, Dov Reichman
openaire   +1 more source

[Surface-active properties of antibiotics].

Antibiotiki, 1983
The critical concentrations of the mycella formation of novobiocin, mithramycin, variamycin, erythromycin, oleandomycin and lincomycin were determined with two methods by changes in the isotherms of the surface tension and in the maximum absorption of rodamine due to the antibiotic concentrations.
V V, Maĭdanov, N L, Egutkin, Iu E, Nikitin   +2 more
openaire   +1 more source

Colloidal Properties of Surface Active Monomers

2014
This chapter focuses on colloidal properties of surface-active monomers. It has been mentioned previously that colloidal properties of surfmers are known to be one of the most important characteristic defining further interface behavior, polymerization aspects, and properties of resulted polymers.
Mykola Borzenkov, Orest Hevus
openaire   +1 more source

The surface-active properties of muscle proteins

Food Chemistry, 1990
Abstract The surface-active properties of myosin, actomyosin, F- and G-actin at the air-solvent interface, at initial bulk phase concentrations in the range of 10 − 4 % to 10 − 2 % w/v, were determined by the drop volume method. Overall myosin was the most effective surface tension depressor, followed by actomyosin, F-actin and G-actin. The surface
Eileen O'Neill, P.A. Morrissey, D.M. Mulvihill   +2 more
openaire   +1 more source