Entropy Special Issue - Configurational Entropy

Papers should be submitted by e-mail to [email protected] (add "Manuscript for Entropy Topical Issue on Configurational Entropy" as the message title and send a copy to Dr. Shu-Kun Lin, [email protected]). Both full research papers and review articles are invited. For planned articles, a title and short abstract (100 words) can be sent to the Editors for announcment on this website. Deadline for paper submission: 31 July 2008.

Leading papers: a list compiled by Shu-Kun Lin

Related special issue: Gibbs Paradox and Its Resolutions

Mojdeh Golmohammadi and Alejandro D. Rey *
Department of Chemical Engineering, McGill University, Montreal, Quebec H3A 2B2, Canada
E-mail: [email protected]
* Author to whom correspondence should be addressed; E-mail: [email protected]
Received: 28 July 2008; in revised form: 18 August 2008 / Accepted: 19 August 2008 / Published: 23 August 2008
Article: Entropic Behavior of Binary Carbonaceous Mesophases
Entropy 2008, 10, 183-199 (PDF format 392 K); DOI: 10.3390/entropy-e10030183

Rodolfo Pinal
Department of Industrial and Physical Pharmacy, Purdue University, 575 Stadium Mall Drive, West Lafayette, Indiana 47907, USA
Tel.: +1-765-496-6247; E-mail: [email protected]
Received: 24 June 2008; in revised form: 20 August 2008 / Accepted: 20 August 2008 / Published: 26 August 2008
Article: Entropy of Mixing and the Glass Transition of Amorphous Mixtures
Entropy 2008, 10, 207-223 (PDF format 229 K); DOI: 10.3390/entropy-e10030207

Evguenii Kozliak ^1,* and Frank L. Lambert ²
1 Department of Chemistry, University of North Dakota, Grand Forks, ND 58202, USA
2 Department of Chemistry, Occidental College, Los Angeles, CA 90041, USA. E-mail: [email protected]
* Author to whom correspondence should be addressed. E-mail: [email protected]
Received: 24 June 2008; in revised form: 10 September 2008 / Accepted: 15 September 2008 / Published: 20 September 2008
Article: Residual Entropy, the Third Law and Latent Heat
Entropy 2008, 10, 274-284 (PDF format 270 K); DOI: 10.3390/e10030274

Michael I. Ojovan
The University of Sheffield, Immobilisation Science Laboratory, Department of Engineering Materials, Sir Robert Hadfield Building, Mappin Street, Sheffield, S1 3JD, United Kingdom
E-mail: [email protected]; http://www.shef.ac.uk/materials/staff/mojovan.html
Received: 31 July 2008; in revised form: 9 September 2008 / Accepted: 22 September 2008 / Published: 24 September 2008
Article: Configurons: Thermodynamic Parameters and Symmetry Changes at Glass Transition
Entropy 2008, 10, 334-364 (PDF format 1075 K); DOI: 10.3390/e10030334

Abstract: A homogeneous solution of a chiral substance is inherently acquired with an overall anisotropy, as reflected in a specific rotation of a linearly polarized light. Such a solution, despite being at a complete equilibrium, stores a configurational entropy, S, in a form of negative entropy which can be nullified by mixing with a solution of the opposite enantiomer. Heat release amounting to T∆S, associated with annulment of negative entropy in aqueous solutions of D and L amino acids, has been recently recorded (Shinitzky et al J. Phys. Chem. 111, 11004, 2007). By using the apparent value of the optical rotation as a measure for the macroscopic anisotropy, the stored configurational entropy in chiral solutions could be translated to information capacity expressed in energy units. Simple fundamental expressions which combine configurational entropy and information capacity in chiral solutions have been thus developed and were found to comply well with the observed heat release upon intermolecular racemization.

Title: Configurational Entropy and Linear Alkanes' Rheology
Author: Roberto C. Dante

Affiliation: Department of Complex Materials, Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México (UNAM), Circuito Exterior S/N, Ciudad Universitaria, Coyoacn, Mexico City, 04510, Mexico, and Department of Chemical Engineering, Facultad de Química, Universidad Nacional Autónoma de México (UNAM), Facultad de Química Conjunto E, Circuito de la Investigación Científica S/N, Coyoacn, Mexico City, 04510, Mexico.

Abstract: Configurational entropy is correlated with relaxation time of polymers, and it is a basic parameter involved in the Adam-Gibbs theory to explain polymer cooperative transformations. The shear steady rheology of alkanes such as n-eicosane and n-heptadecane can be explained in terms of the Adam-Gibbs theory. Transitions from odered to disorderd structures during flow can be correlated with changes of the configurational entropy. On the other hand, configurational entropy can be calculated through the heat capacity of alkanes, which is easily obtained through simple phenomenological models or direct measurements. Moreover, the critical shear stress extrapolated from the experimental viscosity curves is also correlated to the configurational entropy of the system.

Title: Configurational Entropy and Phase Transitions in Simple Systems
Authors: Stephen Berry and Boris Smirnov
Affiliation: Office: 929 E. 57th St., GCIS E 129, Chicago, IL 60637, USA; E-mail: [email protected]