Interactions In Polymer Solutions Research Articles

The thermodynamics of solutions of some normal and branched alkanes in polyisobutylene: an investigation by gas‐liquid chromatography

AbstractGas‐liquid chromatography is a separation method for volatile compounds which is widely used in analytical chemistry. It is based on the partition of the components of a sample between a moving gas phase and a stationary liquid phase of low volatility, the latter in the form of a thin coating on inert support particles filling a long, narrow column. Under proper conditions, values of the standard partial molar free enthalpy of vaporization from infinitely dilute solution in the stationary phase can be obtained from retention times, as a function of temperature. Combination with the standard molar free enthalpy of vaporization of the pure compounds yields the standard partial molar free enthalpy of mixing with the stationary phase. As a method for the investigation of the thermodynamics of interactions in polymer solutions, gas‐liquid chromatography is unique in the sense that it easily yields accurate data at a mole fraction of the polymer near unity and at high temperature. Here the method is applied to solutions of some normal and branched alkanes in polyisobutylene. The results are discussed in terms of a simplified version of the Prigogine solution theory, used by Patterson et al., and in terms of the solution theory of Flory, Orwoll, and Vrij.

A NEW APPROACH TO STUDY MOLECULAR INTERACTIONS IN POLYMER SOLUTIONS*

Transactions of the New York Academy of SciencesVolume 33, Issue 3 Series II p. 333-343 A NEW APPROACH TO STUDY MOLECULAR INTERACTIONS IN POLYMER SOLUTIONS* Kang-Jen LIU, Kang-Jen LIU Corporate Chemical Research Laboratory Allied Chemical Corporation Morristown, N.J.Search for more papers by this author Kang-Jen LIU, Kang-Jen LIU Corporate Chemical Research Laboratory Allied Chemical Corporation Morristown, N.J.Search for more papers by this author First published: March 1971 https://doi.org/10.1111/j.2164-0947.1971.tb02601.xCitations: 3 † This paper was presented at a meeting of the Section of Polymer Science on October 28, 1970. AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Citing Literature Volume33, Issue3 Series IIMarch 1971Pages 333-343 RelatedInformation

Proton Magnetic Resonance Studies of Molecular Interactions in Polymer Solutions

Abstract Proton, magnetic resonance (PMR) spectroscopy has become a well-recognized method for the study of polymers during the past 15 years. Generally, one can categorize PMR polymer studies into three main areas: (1) wide-line and pulsed PMR of bulk polymers [1–6]; (2) wide-line and high-resolution PMR of biopolymers [7–10]; and (3) high-resolution PMR studies of synthetic polymers in solution [5,6,11–25].

Study of Polymer-Solute Interactions by Gas Chromatography

Study of Polymer-Solute Interactions by Gas Chromatography

Specific interactions in solutions of polymers. II. Effect of the polymer solvation on thermodynamic properties

Specific interactions in solutions of polymers. II. Effect of the polymer solvation on thermodynamic properties

Specific interactions in solutions of polymers. I. General formulation of the Flory-Huggins lattice statistics

Specific interactions in solutions of polymers. I. General formulation of the Flory-Huggins lattice statistics

Sorption of a group of dicarboxylic acids by an insoluble polyamide.

To develop a body of knowledge in regard to solute-polymer interactions, a study was initiated to investigate the sorption characteristics of a group of dicarboxylic acids when nylon-6,6 was used as the substrate. Results demonstrated the importance of the hydrophobic moiety in the group of acids.

Application of dilatometric technique for characterizing intermolecular interactions in polymer solutions

Application of dilatometric technique for characterizing intermolecular interactions in polymer solutions

The solvent effect on the polymer‐solvent interaction in polymer solutions

AbstractViscosity measurements afford data for the parameters governing the thermodynamic interaction between polymer and solvent. Viscosities of polydimethylsiloxane solutions were measured in several solvents at different temperatures with the object of examinating the effects of the geometrical and chemical nature of solvent on the thermodynamic interaction. The pair interaction heat and entropy parameters for polydimethylsiloxane solutions were derived from the intrinsic viscosity. It was found that the pair entropy parameters differes widely for polydimethylsiloxane in different solvents. The large variation in the entropy parameters may be attributed to the preferential ordering induced in solution in addition to the size and the shape of the solvent molecule.

On the polymer–solvent interaction in polymer solutions

AbstractOsmotic pressure and viscosity measurements afford mutually supplementary data for the thermodynamic parameters governing the interaction between polymer segments and solvent molecules. With the object of studying the effects of the structural characteristics of polymer and solvent on the interaction between polymer segments and solvent molecules, we have performed osmotic pressure and viscosity measurements at different temperatures. It appears that the ϑ temperature deduced from the intrinsic viscosity agrees with that obtained from the second virial coefficient. The entropy of dilution for the polyisobutylene–benzene system appears to be comparable to that found for polydimethylsiloxane in benzene. However, the entropy of dilution has been found to differ widely for a given polymer in different solvents. It appears that the entropy of dilution varies not only with the geometrical character of the solvent molecule in relation to the polymer segment, but also with the preferential ordering induced by the difference in the binding forces between the molecules solvent–solvent, solvent–solute, and solute–solute. A brief discussion is also given on the influence of hindrance to free rotation on the polymer configuration.

Molecular interaction in polymer solutions—II. The third virial coefficient of solutions of flexible macromolecular chains: Yu. E. Eisner, Vysokomol. soedin. 2: No. 3, 360–364, 1960

Molecular interaction in polymer solutions—II. The third virial coefficient of solutions of flexible macromolecular chains: Yu. E. Eisner, Vysokomol. soedin. 2: No. 3, 360–364, 1960

Molecular interactions in polymer solutions— I. The influence of volume effects on the second virial coefficient

Molecular interactions in polymer solutions— I. The influence of volume effects on the second virial coefficient

Interactions in Polymer Solutions Observed by Equilibrations across Membranes

Interactions in Polymer Solutions Observed by Equilibrations across Membranes