| Morphological structures of poly(vinylidene fluoride)/montmorillonite nanocomposites |
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| 作者单位： | SONG YuMing（College of Materials Science and Engineering, Jilin University, Changchun 130012, China） ;ZHAO ZhuDi（College of Materials Science and Engineering, Jilin University, Changchun 130012, China） ;YU WenXue（College of Materials Science and Engineering, Jilin University, Changchun 130012, China） ;LI Bo（College of Materials Science and Engineering, Jilin University, Changchun 130012, China） ;CHEN XinFang（College of Materials Science and Engineering, Jilin University, Changchun 130012, China） ; |
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| 基金项目： | 教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | Poly(vinylidene fluoride) (PVDF)/montmorillonite (MMT) nanocomposites were prepared by melt blen- ding a kind of organically modified montmorillonite with PVDF. The morphological structures of the nanocomposites were studied using X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and differential scanning calorimetry (DSC). The re- sults indicate that organically modified montmorillonites are in the form of intercalation, exfoliation, and fragments in the PVDF matrix. For the composites, the (001) peak position of MMT was found to shift to a lower angle in XRD patterns, and some MMT fragments could be observed under TEM. MMT loading was favorable to producing the piezoelectric β phase in the PVDF matrix and caused internal stress in α crystals. At the same time, the crystallinity and spherulite size of PVDF decreased with the MMT content. MMT induced β phase is stable even at high temperatures (160℃). For these changes in morphological structures, some possible explanations were proposed based on the experimental re- sults.
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| 收稿时间： | 2006-12-31 |
| 修稿时间： | 2007-03-01 |
Morphological structures of poly(vinylidene fluoride)/montmorillonite nanocomposites |
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| Song YuMing,Zhao ZhuDi,Yu WenXue,Li Bo,Chen XinFang. Morphological structures of poly(vinylidene fluoride)/montmorillonite nanocomposites[J]. Science in China(Chemistry), 2007, 50(6): 790-796. DOI: 10.1007/s11426-007-0079-8 |
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| Authors: | Song YuMing Zhao ZhuDi Yu WenXue Li Bo Chen XinFang |
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| Affiliation: | College of Materials Science and Engineering, Jilin University, Changchun 130012, China |
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| Abstract: | Poly(vinylidene fluoride) (PVDF)/montmorillonite (MMT) nanocomposites were prepared by melt blending a kind of organically modified montmorillonite with PVDF. The morphological structures of the nanocomposites were studied using X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, and differential scanning calorimetry (DSC). The results indicate that organically modified montmorillonites are in the form of intercalation, exfoliation, and fragments in the PVDF matrix. For the composites, the (001) peak position of MMT was found to shift to a lower angle in XRD patterns, and some MMT fragments could be observed under TEM. MMT loading was favorable to producing the piezoelectric β phase in the PVDF matrix and caused internal stress in α crystals. At the same time, the crystallinity and spherulite size of PVDF decreased with the MMT content. MMT induced β phase is stable even at high temperatures (160°C). For these changes in morphological structures, some possible explanations were proposed based on the experimental results. Supported by the Specialized Research Fund for the Doctoral Program of Higher Education (Grant No. 20060183009) |
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| Keywords: | organically modified montmorillonite nanocomposite crystalline structure |
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