期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 113, 期 2, 页码 821-830出版社
SPRINGER
DOI: 10.1007/s10973-012-2834-0
关键词
SEM; XRD; TSDC; Crystallization; Transient current; Nanocomposites
资金
- Defence Research & Development Organization, New Delhi (India) [ERIP/ER/0804419/M/01/1113]
The structural and thermal behavior of PVDF/ZnO nanocomposites have been investigated by employing scanning electron microscopy (SEM),TEM, DSC, powder X-ray diffraction (XRD), thermally stimulated discharge current (TSDC), and transient current techniques. SEM/TEM observation indicated the homogeneous dispersion of functionalized ZnO nanoparticles throughout PVDF matrix. DSC shows that the crystallinity is influenced by the presence of ZnO nanoparticles in the PVDF matrix because the filler acts as efficient nucleating agent to facilitate PVDF crystallization. DSC results indicated the enhancement of the glass transition temperature (T (g)), melting temperature (T (m)) and crystallization temperature (T (c)) of nanocomposites compared to pristine PVDF. XRD shows that the full-width at half maximum decreases with increasing ZnO content, which is attributed to the improvement in crystallinity. The incorporation of ZnO nanoparticles influences the modification of polarization process in PVDF as observed by means of TSDC and transient current study.
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