Polar Probe Study of Water-Organic Solvent-Macromolecule Emulsifier Aggregates Structure

2013 ◽

Vol 422 ◽

pp. 39-45

Author(s):

Hong Jing Zhang

Keyword(s):

Ethylene Glycol ◽

Organic Solvent ◽

Crude Oil ◽

Structural Properties ◽

Theoretical Basis ◽

Butyl Alcohol ◽

Methyl Red ◽

Polar Medium ◽

Micellar Aggregates ◽

Polar Probe

In this paper, using methyl red as polar probe, a containing LPS macromolecule emulsifier (HBS-1, MW is about 106Da) micellar aggregates in different polar medium (ethanol, n-butyl alcohol, ethylene glycol and DMF) structural properties, and provide a theoretical basis for the mechanism of the emulsified crude oil.

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Competition between poly(methyl methacrylate) and poly(ethylene glycol) during their interaction with poly(silicic acid) in an organic solvent

Polymer Science Series A ◽

10.1134/s0965545x10080110 ◽

2010 ◽

Vol 52 (8) ◽

pp. 842-848 ◽

Cited By ~ 1

Author(s):

I. M. Papisov ◽

V. V. Grushina ◽

E. A. Litmanovich ◽

D. A. Sapozhnikov ◽

Ya. S. Vygodskii ◽

...

Keyword(s):

Ethylene Glycol ◽

Organic Solvent ◽

Methyl Methacrylate ◽

Silicic Acid ◽

Poly Ethylene Glycol ◽

Poly Methyl Methacrylate ◽

Poly Ethylene

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Electrochemical studies of the Pb2+/Pb(Hg) system in aqueous and aqueous ethylene glycol solutions

Canadian Journal of Chemistry ◽

10.1139/v79-287 ◽

1979 ◽

Vol 57 (14) ◽

pp. 1801-1803 ◽

Cited By ~ 1

Author(s):

Tibor Rabockai

Keyword(s):

Aqueous Solution ◽

Ethylene Glycol ◽

Organic Solvent ◽

Electrochemical Behavior ◽

Experimental Error ◽

Electrochemical Studies ◽

Temperature Range ◽

All Solutions ◽

Aqueous Ethylene Glycol ◽

Current Reversal

The electrochemical behavior of the Pb2+/Pb(Hg) system in aqueous and aqueous ethylene glycol solutions is studied in the temperature range of 20.0 to 50.0 °C by means of current reversal chronopotentiometry. It is shown that the reduction of Pb2+ ion is reversible and that kinetic or catalytic complications are not present. The value of dE1/2/dT is −0.6 mV/deg in the aqueous solution and −0.5 mV/deg in the solution with 56% (w/w) or higher concentrations of the organic solvent. In the above concentration range of ethylene glycol the activation energies of diffusion and viscosity vary from 4.3 × 103 to 7.2 × 103 cal mol−1 and from 3.7 × 103 to 6.7 × 103 cal mol−1, respectively. For all solutions the solvodynamic mean radius of the diffusing species remains constant within the experimental error, suggesting that the diffusing species is always the hydrated Pb2+ ion.

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Preparation of Organic Solvent/Surfactant-Free Microspheres of Methoxy Poly(Ethylene Glycol)-b-Poly(ε-Caprolactone) by a Melt Dispersion Method

Asian Journal of Applied Sciences ◽

10.3923/ajaps.2009.341.347 ◽

2009 ◽

Vol 2 (4) ◽

pp. 341-347 ◽

Cited By ~ 3

Author(s):

Yodthong Baimark

Keyword(s):

Ethylene Glycol ◽

Organic Solvent ◽

Poly Ethylene Glycol ◽

Dispersion Method ◽

Poly Ethylene

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Effects of organic solvents on immobilized enzyme catalyses. Chymotrypsin immobilized on porous glass

Canadian Journal of Chemistry ◽

10.1139/v81-423 ◽

1981 ◽

Vol 59 (19) ◽

pp. 2921-2925 ◽

Cited By ~ 6

Author(s):

J. Bryan Jones ◽

Diana H. Pliura

Keyword(s):

Organic Solvent ◽

Organic Solvents ◽

Porous Glass ◽

Immobilized Enzyme ◽

Butyl Alcohol ◽

Solvent Concentration ◽

Marked Contrast ◽

Practical Applications ◽

Tert Butyl Alcohol ◽

Esterolytic Activity

The esterolytic activity of native chymotrypsin (CT) immobilized on ionically neutral porous glass beads has been studied in the presence of up to 20% (v/v) of the organic solvents methanol, ethanol, 2-propanol, tert-butyl alcohol, dioxane, and DMSO. In marked contrast to the variations observed with native CT, inhibition of CT immobilized on glass (CT–glass) was independent of the nature of the organic solvent. The overall activity, as indicated by kc(app)/km(app), decreased by 35–50% as the concentration of all solvents surveyed was increased up to 20%. In general, high organic solvent concentration accelerated the rate of protein release from the insoluble catalyst. For practical applications in aqueous organic solvents CT–glass conjugates are inferior to those of the enzyme attached to Sephadex.

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