Statistical thermodynamic theory of the collapse transition of thermotropic, main-chain mesogenic polymer molecules in infinitely dilute solution

1986 ◽  
Vol 19 (1) ◽  
pp. 89-97 ◽  
Author(s):  
Richard E. Boehm ◽  
Daniel E. Martire
Keyword(s):  
Main Chain ◽  
Thermodynamic Theory ◽  
Statistical Thermodynamic ◽  
Dilute Solution ◽  
Collapse Transition ◽  
Polymer Molecules

scholarly journals Cooperativity in micellar solubilization

2021 ◽  
Vol 23 (14) ◽  
pp. 8705-8716
Author(s):  
Seishi Shimizu ◽  
Nobuyuki Matubayasi
Keyword(s):  
Thermodynamic Theory ◽  
Statistical Thermodynamic ◽  
Micellar Solubilization

Enhanced surfactant association by solutes drives cooperative solubilization according to the universal statistical thermodynamic theory.

Note on the distribution of polymer molecules in dilute solution

1950 ◽  
Vol 5 (3) ◽  
pp. 383-386 ◽  
Author(s):  
Paul M. Doty ◽  
Robert F. Steiner
Keyword(s):  
Dilute Solution ◽  
Polymer Molecules

scholarly journals Fluctuation adsorption theory: quantifying adsorbate–adsorbate interaction and interfacial phase transition from an isotherm

2020 ◽  
Vol 22 (48) ◽  
pp. 28304-28316
Author(s):  
Seishi Shimizu ◽  
Nobuyuki Matubayasi
Keyword(s):  
Phase Transition ◽  
Adsorption Isotherm ◽  
Thermodynamic Theory ◽  
Statistical Thermodynamic ◽  
Adsorption Theory ◽  
Interfacial Phase

Adsorbate–adsorbate interaction can be determined directly from an adsorption isotherm via a rigorous statistical thermodynamic theory.

The Association of Polymer Molecules in Dilute Solution.

1947 ◽  
Vol 51 (1) ◽  
pp. 32-57 ◽  
Author(s):  
Paul Doty ◽  
Herman Wagner ◽  
Seymour Singer
Keyword(s):  
Dilute Solution ◽  
Polymer Molecules

Statistical thermodynamic theory of grafted polymeric layers

1993 ◽  
Vol 98 (6) ◽  
pp. 5006-5018 ◽  
Author(s):  
M. A. Carignano ◽  
I. Szleifer
Keyword(s):  
Thermodynamic Theory ◽  
Statistical Thermodynamic

The Interaction between Rubber and Liquids. X. Some New Experimental Tests of a Statistical Thermodynamic Theory of Rubber-Liquid Systems

1949 ◽  
Vol 22 (2) ◽  
pp. 320-332
Author(s):  
Geoffrey Gee
Keyword(s):  
Experimental Data ◽  
Statistical Theory ◽  
Phase Equilibria ◽  
Qualitative Agreement ◽  
Experimental Tests ◽  
Thermodynamic Theory ◽  
Simple Equation ◽  
Statistical Thermodynamic ◽  
Two Phase ◽  
Liquid Systems

Abstract Experimental data are reported on the effects of vulcanization, extension, and temperature on the swelling of rubber. Although in qualitative agreement with a simple equation derived from a statistical theory of polymer solutions, these reveal quantitative discrepancies which are important in discussions of two-phase equilibria.

The direct observation of polymer molecules and determination of their molecular weight

1964 ◽  
Vol 279 (1376) ◽  
pp. 50-61 ◽  
Keyword(s):  
Molecular Weight ◽  
Direct Observation ◽  
Particle Diameter ◽  
Dilute Solution ◽  
Crystalline Polymers ◽  
Polymer Molecules ◽  
Molecular Weights ◽  
Preferential Evaporation ◽  
Poor Solvent

An experimental investigation of the conditions necessary for the production of compact, single polymer molecules, in a form suitable for direct observation in the electron microscope, is described. Molecules are isolated by dispersing a dilute solution of the polymer as fine droplets on to a suitable substrate: ideally each droplet should contain either one or no polymer molecules. The solution is a mixture of two solvents, a good one and a poor one. Initially the good solvent predominates so that the probability of polymer aggregation is low. Preferential evaporation of the relatively volatile solvent on the substrate itself gives the poor solvent conditions needed for the formation of well-defined molecular spheres. Factors determining the choice of solvent, precipitant, and the composition of the mixture are discussed. There is little difficulty in obtaining single molecules with glassy amorphus polymers; rubbery polymers collapse and spherical molecules are formed only if the entire preparation is carried out at a temperature below that of the glass transition; crystalline polymers are not amenable to this technique. To obtain sufficient contrast the particles have to be shadowed and it is shown that, although certain dimensions are distorted by the metal coating, the shadow length faithfully represents the true particle diameter. Molecular weights, and their distribution, when of the order of a million and above, can readily be accurately determined. Conventional methods are unreliable in this region of high molecular weight.

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