SONG Rui, YANG Debin, XIE Qiaoli, HE Linghao, LIU Baofei. THE EFFECT OF ANNEALING TEMPERATURE ON CRYSTALLIZATION OF POLY(VINYLIDENE FLUORIDE) FILMS PREPARED FROM POLY(VINYLIDENE FLUORIDE)/AMIDE SOLUTION. [J]. Acta Polymerica Sinica (2):144-147(2007)
DOI:
SONG Rui, YANG Debin, XIE Qiaoli, HE Linghao, LIU Baofei. THE EFFECT OF ANNEALING TEMPERATURE ON CRYSTALLIZATION OF POLY(VINYLIDENE FLUORIDE) FILMS PREPARED FROM POLY(VINYLIDENE FLUORIDE)/AMIDE SOLUTION. [J]. Acta Polymerica Sinica (2):144-147(2007)DOI:
THE EFFECT OF ANNEALING TEMPERATURE ON CRYSTALLIZATION OF POLY(VINYLIDENE FLUORIDE) FILMS PREPARED FROM POLY(VINYLIDENE FLUORIDE)/AMIDE SOLUTION
The crystallization of poly(vinylidene fluoride) (PVDF) films prepared from dimethylformamide (DMF) and dimethylacetamide (DMAc) solution and subsequently annealed at various temperature was studied by FT-IR and optical microscope.The results indicate that the crystallization of PVDF film depends on solvent
annealing temperature and film thickness.For all samples the content of β phase
F(β)
decreases with elevating annealing temperature.When the annealing temperature is less than 90℃
the F(β) of PVDF-DMF system is higher than that of PVDF-DMAc system; however
at 90~160℃
a reversed observation is obtained.For the two systems
interestingly
the F(β) decreases drastically at the region of ca 90℃ and 80℃
respectively.In addition
the crystallization of PVDF is also affected by film thickness
higher film thickness will make the spherulite more resolved.