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Swelling Behavior of Chitosan Hydrogel in Ionic Liquid-Water Binary System

Published online by Cambridge University Press:  01 February 2011

Chang Kee Lee ,
Sang Jun Park ,
Seong Gil Yoon ,
Kwang Min Shin ,
Su Ryon Shin ,
Bon Kang Gu ,
Min Sup Kim ,
Min Kyoon Shin ,
Yu Jin Kim  and
Seon Jeong Kim
Chang Kee Lee
Affiliation:
[email protected] UniversitySeoul N/A N/AKorea, Republic of
Sang Jun Park
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Seong Gil Yoon
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Kwang Min Shin
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Su Ryon Shin
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Bon Kang Gu
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Min Sup Kim
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Min Kyoon Shin
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Yu Jin Kim
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
Seon Jeong Kim
Affiliation:
[email protected], Hanyang University, Seoul, N/A, N/A, Korea, Republic of
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Abstract

The swelling behavior of chitosan hydrogels in ionic liquid–water binary systems was studied using hydrophilic room-temperature ionic liquids (RTILs) to elucidate the swelling properties of chitosan hydrogels. It was confirmed that chitosan hydrogels are much stiffer after immersing in a pure RTIL because the water existing inside the chitosan polymer network is extracted into the RTIL. The pH of the binary system changes when the RTIL is in contact with water. The chitosan hydrogels were fully dissociated at a 90% water content in the BMI-BF4-water binary system. The equilibrium binary system content behavior of the chitosan hydrogels depended upon the amount of free water present. The water behavior in a pure RTIL was examined using differential scanning calorimetry.

Keywords

blendpolymerfilm
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 915: Symposium R – Nanostructured Materials and Hybrid Composites for Gas Sensors and Biomedical Applications , 2006 , 0915-R03-08
Copyright
Copyright © Materials Research Society 2006

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