Title :
Piezo and pyroelectricity and structure of doped polymers
Author :
Danz, R. ; Elling, B. ; Künstler, W. ; Pinnow, M. ; Schmolke, R. ; Wedel, A. ; Geiß, D.
Author_Institution :
Inst. of Polymer Chem., Acad. of Sci., Telrow, East Germany
fDate :
4/1/1990 12:00:00 AM
Abstract :
A description is given of the doping of polymer films with dyes and plasticizer and their influence on the electrical properties and structure of polymers. Doping of polyvinylidene fluoride (PVDF) with the dye crystal violet results in B-structure modification without stretching and produces piezo- and pyroelectric polymer films with a high absorbance in the visible range. The field dependence of the piezoelectric strain coefficient d31 and the remanent polarization of polyethylene-oxide-doped PVDF films displays a shift to lower fields, which is attributed to a plasticizer effect. The incorporation of the dye disperse red in polymethylmethacrylate results in a significant increase of pyroelectric activity
Keywords :
piezoelectric materials; polymer films; pyroelectricity; B-structure modification; PMMA; PVDF; crystal violet dye; disperse red dye; dyes; electrical properties; field dependence; high absorbance; piezoelectric polymer films; piezoelectric strain coefficient; plasticizer effect; polyethylene-oxide-doped PVDF films; polymer films; polymethylmethacrylate; polyvinylidene fluoride; pyroelectric activity; pyroelectric polymer films; pyroelectricity; remanent polarization; structure of doped polymers; Doping; Glass; Nonlinear optics; Optical films; Optical polymers; Piezoelectric films; Plastic films; Polymer films; Pyroelectricity; Temperature;
Journal_Title :
Electrical Insulation, IEEE Transactions on
