Thermally stimulated current measurements for a blend of poly(vinylidene fluoride-triflouroethiene) copolymer and poly(methyl methaerylate)

Blends of PMMA/P (VDF-TrFE) have both crystalline P (VDF-TrFE) and miscible amorphous phases when P (VDF-TrFE) is more than PMMA in composition ratio. Structural characterization of PMMA/P (VDF-TrFE) (20/80 wt. ratio) was investigated by using thermally stimulated depolarization current (TSDC) and thermal sampling thermally stimulated depolarization current (TS-TSDC) measurements. Both measurements suggested the existence of a miscible amorphous phase from the generation of a new peak (60degreesC). Two slight peaks located at - 30 and 15degreesC in TS-TSDC spectrum, which is a more sensitive method than TSDC, revealed that a trace amount of amorphous region of P (VDF-TrFE) still existed in the blend. The importance of TSDC measurements, especially using TS-TSDC, to analyze blend structures was described here.