Polymer-Solvent Interaction Effects in Oscillatory Flow Birefringence Studies of Polybutadienes and Polyisoprenes in Aroclor Solvents

1980 ◽  
Vol 13 (6) ◽  
pp. 1690-1695 ◽  
Author(s):  
Michael G. Minnick ◽  
John L. Schrag
Keyword(s):  
Oscillatory Flow ◽  
Interaction Effects ◽  
Flow Birefringence ◽  
Solvent Interaction ◽  
Polymer Solvent

A New Look at Measurements of Network Density

1986 ◽  
Vol 59 (1) ◽  
pp. 138-141 ◽  
Author(s):  
Robert A. Hayes
Keyword(s):  
Hysteresis Loop ◽  
Interaction Parameters ◽  
Network Density ◽  
Stress Strain ◽  
Solvent Interaction ◽  
Solvent Method ◽  
Strain Data ◽  
Good Agreement ◽  
Polymer Solvent ◽  
New Look

Abstract A two-solvent method for determining the polymer-solvent interaction parameters independently of stress-strain data is described. The values obtained are much lower than those reported previously. Network densities calculated from swelling data and these interaction parameters are in good agreement with those calculated from the return portion of a hysteresis loop at high elongations.

Dependence of the Polymer-Solvent Interaction Parameter of Vulcanizates Based on Cis-1,4-Poly(Butadiene) on the Type and Concentration of Vulcanizing Agent

1974 ◽  
Vol 47 (2) ◽  
pp. 303-306 ◽  
Author(s):  
V. M. Gavrilov ◽  
A. G. Shvarts
Keyword(s):  
Interaction Parameter ◽  
Solvent Interaction ◽  
Polymer Solvent

Abstract Values of the polymer-solvent interaction parameter were obtained for cis-1,4-poly(butadiene) vulcanized with alkylphenol—formaldehyde oligomer, sulfur, and peroxide systems swollen with heptane, benzene, and m-xylene. The dependence of the interaction parameter on the degree of crosslinking was demonstrated. The method of vulcanization does not affect the dependence of χ on υr for good solvents, but influences this dependence for n-heptane, a weak solvent. It was shown that the better the solvent, the stronger the dependence of the interaction parameter on the degree of crosslinking.

Oscillatory flow birefringence of deoxyribonucleic acid solutions1

Biorheology ◽  
1973 ◽  
Vol 10 (3) ◽  
pp. 351-360 ◽  
Author(s):  
George B. Thurston ◽  
Robert S. Wilkinson
Keyword(s):  
Oscillatory Flow ◽  
Deoxyribonucleic Acid ◽  
Flow Birefringence
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