Quantitative analysis on swelling behavior of ionic gels in the mixed solvents

O. Ok Park, Won Sang Lee, Yum Rak Oh, Yang-Kyoo Han

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Phase transition was observed in HSMA/PVA IPN gels having ionizable groups with 3-dimensional network structure in the mixed solvents such as water-methanol. water-acetone or water-ethanol. In order to analyze this phenomena quantitatively, two adjustable parameters related to gel properties were determined from the model based on Tanaka theory. One was the number of dissociated counterions per effective chain (f). the other was the interaction parameters (xjj) between gel and water. As increasing the composition of water, swelling of the gels occurs in the mixed solvent; the gel was shrunk instead when the water content was decreased, which was reversible regardless of the path of swelling and shrinking. A degree of swelling or shrinking of the gel was dependent upon these X ijand f of the gel. With smaller X n and larger f. more rapid phase transition was observed. Additionally, swelling and shrinking behavior of the gel in system of two solvents and one polymer was influenced not only by x ij between gel and solvents but also by xij between two solvents.

Original languageEnglish
Pages (from-to)96-103
Number of pages8
JournalKorean Journal of Chemical Engineering
Volume11
Issue number2
DOIs
StatePublished - 1994 Apr 1

Fingerprint

Swelling
Gels
Chemical analysis
Water
Phase transitions
Acetone
Water content
Methanol
Polymers
Ethanol

Cite this

@article{1da98f87be1e4c41a7b91a4159f69b17,
title = "Quantitative analysis on swelling behavior of ionic gels in the mixed solvents",
abstract = "Phase transition was observed in HSMA/PVA IPN gels having ionizable groups with 3-dimensional network structure in the mixed solvents such as water-methanol. water-acetone or water-ethanol. In order to analyze this phenomena quantitatively, two adjustable parameters related to gel properties were determined from the model based on Tanaka theory. One was the number of dissociated counterions per effective chain (f). the other was the interaction parameters (xjj) between gel and water. As increasing the composition of water, swelling of the gels occurs in the mixed solvent; the gel was shrunk instead when the water content was decreased, which was reversible regardless of the path of swelling and shrinking. A degree of swelling or shrinking of the gel was dependent upon these X ijand f of the gel. With smaller X n and larger f. more rapid phase transition was observed. Additionally, swelling and shrinking behavior of the gel in system of two solvents and one polymer was influenced not only by x ij between gel and solvents but also by xij between two solvents.",
author = "Park, {O. Ok} and Lee, {Won Sang} and Oh, {Yum Rak} and Yang-Kyoo Han",
year = "1994",
month = "4",
day = "1",
doi = "10.1007/BF02697361",
language = "English",
volume = "11",
pages = "96--103",
journal = "Korean Journal of Chemical Engineering",
issn = "0256-1115",
number = "2",

}

Quantitative analysis on swelling behavior of ionic gels in the mixed solvents. / Park, O. Ok; Lee, Won Sang; Oh, Yum Rak; Han, Yang-Kyoo.

In: Korean Journal of Chemical Engineering, Vol. 11, No. 2, 01.04.1994, p. 96-103.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Quantitative analysis on swelling behavior of ionic gels in the mixed solvents

AU - Park, O. Ok

AU - Lee, Won Sang

AU - Oh, Yum Rak

AU - Han, Yang-Kyoo

PY - 1994/4/1

Y1 - 1994/4/1

N2 - Phase transition was observed in HSMA/PVA IPN gels having ionizable groups with 3-dimensional network structure in the mixed solvents such as water-methanol. water-acetone or water-ethanol. In order to analyze this phenomena quantitatively, two adjustable parameters related to gel properties were determined from the model based on Tanaka theory. One was the number of dissociated counterions per effective chain (f). the other was the interaction parameters (xjj) between gel and water. As increasing the composition of water, swelling of the gels occurs in the mixed solvent; the gel was shrunk instead when the water content was decreased, which was reversible regardless of the path of swelling and shrinking. A degree of swelling or shrinking of the gel was dependent upon these X ijand f of the gel. With smaller X n and larger f. more rapid phase transition was observed. Additionally, swelling and shrinking behavior of the gel in system of two solvents and one polymer was influenced not only by x ij between gel and solvents but also by xij between two solvents.

AB - Phase transition was observed in HSMA/PVA IPN gels having ionizable groups with 3-dimensional network structure in the mixed solvents such as water-methanol. water-acetone or water-ethanol. In order to analyze this phenomena quantitatively, two adjustable parameters related to gel properties were determined from the model based on Tanaka theory. One was the number of dissociated counterions per effective chain (f). the other was the interaction parameters (xjj) between gel and water. As increasing the composition of water, swelling of the gels occurs in the mixed solvent; the gel was shrunk instead when the water content was decreased, which was reversible regardless of the path of swelling and shrinking. A degree of swelling or shrinking of the gel was dependent upon these X ijand f of the gel. With smaller X n and larger f. more rapid phase transition was observed. Additionally, swelling and shrinking behavior of the gel in system of two solvents and one polymer was influenced not only by x ij between gel and solvents but also by xij between two solvents.

UR - http://www.scopus.com/inward/record.url?scp=51249165183&partnerID=8YFLogxK

U2 - 10.1007/BF02697361

DO - 10.1007/BF02697361

M3 - Article

AN - SCOPUS:51249165183

VL - 11

SP - 96

EP - 103

JO - Korean Journal of Chemical Engineering

JF - Korean Journal of Chemical Engineering

SN - 0256-1115

IS - 2

ER -