Title :
Interfacial interactions in silica gel-PMMA composite materials
Author :
Kalogeras, I.M. ; Vassilikou-Dova, J. ; Neagu, E.R.
Author_Institution :
Dept. of Phys., Athens Univ., Greece
Abstract :
The dense inorganic-organic composite used in the present investigation involves the widely used macromolecular phase, poly(methyl methacrylate) (PMMA), in-situ polymerized into the porous silica-gel matrix. The materials were studied by means of the thermally stimulated depolarization currents (TSDC) dielectric technique, applied in the extended temperature range -260 to +170 °C, which covers the relaxation response in the entire glassy region of the dielectrically active polymeric component. Earlier reports on similar composites based on the sol-gel process are mainly concentrated on aspects of their mechanical, thermal and optical response
Keywords :
composite material interfaces; gels; polymers; silicon compounds; thermally stimulated currents; vitreous state; -260 to 170 degC; PMMA; TSDC; dense inorganic-organic composite; dielectrically active polymeric component; glassy region; interfacial interactions; macromolecular phase; poly(methyl methacrylate; porous silica-gel matrix; relaxation response; silica gel-PMMA composite materials; thermally stimulated depolarization currents; Biomedical optical imaging; Composite materials; Glass; Optical films; Physics; Polarization; Silicon compounds; Thermal conductivity; Thermal expansion; Thermal resistance;
Conference_Titel :
Electrets, 1999. ISE 10. Proceedings. 10th International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-5025-1
DOI :
10.1109/ISE.1999.832105
