Next Article in Journal
Fiber Network Formation in Semi-Flexible Polymer Solutions: An Exploratory Computational Study
Next Article in Special Issue
Single Micrometer-Sized Gels: Unique Mechanics and Characters for Applications
Previous Article in Journal
Controlling Variables in Molecular Gel Science: How Can We Improve the State of the Art?
Previous Article in Special Issue
A Simple Method of Interpretating the Effects of Electric Charges on the Volume Phase Transition of Thermosensitive Gels
Article Menu
Issue 2 (June) cover image

Export Article

Open AccessArticle

Dynamics of Spinodal Decomposition in a Ternary Gelling System

Department of Physics, Graduate School of Science, Kyushu University, 744 Motooka, Fukuoka 810-0935, Japan
Current address: Department of Applied Physics, Faculty of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan.
*
Author to whom correspondence should be addressed.
Received: 26 February 2018 / Revised: 16 March 2018 / Accepted: 19 March 2018 / Published: 22 March 2018
Full-Text   |   PDF [646 KB, uploaded 3 May 2018]   |  

Abstract

The phase diagram and phase transitions of the ternary system of gelatin, water and poly(ethylene glycol) oligomers were studied as a function of the weight fraction of gelatin and the weight fraction and molecular weight of poly(ethylene glycol) oligomers. It was found that both phase separation and the sol-gel transition occur in this ternary system. The relative position of the phase separation line and the sol-gel transition line depends on the weight fraction and the molecular weight of the poly(ethylene glycol) oligomer that coexists in the solution. All aspects of the phase diagram are sensitive to the molecular weight of the poly(ethylene glycol) oligomer. Since the phase separation line crosses the sol-gel transition line in the phase space that is created by the temperature and the weight fraction of gelatin, the phase space is typically divided into four regions, where each region corresponds to a definite phase. The transitions between mutual phases were studied using the light-scattering technique. View Full-Text
Keywords: sol-gel transition; site-bond correlated-percolation model for polymer gelation; gelation temperature; cloud point temperature; spinodal temperature; spinodal decomposition sol-gel transition; site-bond correlated-percolation model for polymer gelation; gelation temperature; cloud point temperature; spinodal temperature; spinodal decomposition
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Yamashita, Y.; Yanagisawa, M.; Tokita, M. Dynamics of Spinodal Decomposition in a Ternary Gelling System. Gels 2018, 4, 26.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Gels EISSN 2310-2861 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top