Dielectric characteristic of a swelling gel

Author

Mayoux, Ch ; Dandurand, J. ; Lacabanne, C.

Author_Institution

Lab. de Phys. des Polymeres, Univ. Paul Sabatier, Toulouse, France

fYear

1999

fDate

1999

Firstpage

609

Lastpage

612

Abstract

Swelling gels are very attractive for applications in various domains:biomaterials, agriculture, security.... This study concerns a crosslinked. PolyAcrylAcid (P(AA)) synthesized by inverse suspension polymerization. The principal chemical property of this material is related to acrylate groups which are able to absorb an important amount of liquid. The swelling property of crosslinked P(AA) are dependent upon different parameters such as temperature, solution pH, crosslinking ratio. Surprisingly, the molecular mechanism of swelling remains unclear. The aim of this work is to analyze molecular mobility of crosslinked P(AA) by Differential Scanning Calorimetry (DSC) and Thermally Stimulated Current (TSC). The influence of heptane has been followed in order to established the molecular origin of the various events

Keywords

differential scanning calorimetry; gels; polymer solutions; swelling; thermally stimulated currents; Differential Scanning Calorimetry; Thermally Stimulated Current; crosslinking ratio; dielectric characteristics; polyacrylacid; solution pH; swelling gel; temperature; Agriculture; Calorimetry; Chemicals; Dielectric materials; Glass; Heat recovery; Polymers; Security; Shape; Temperature dependence;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on

Conference_Location

Athens

Print_ISBN

0-7803-5025-1

Type

conf

DOI

10.1109/ISE.1999.832121

Filename

832121