Vinylidene fluoride telomers for piezoelectric devices
Vinylidene fluoride telomers for piezoelectric devices
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DOI：
10.1038/pj.2010.102
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发表时间：
2011-02-01
期刊：
影响因子：
2.8
通讯作者：
Ueda, Yasukiyo
中科院分区：
文献类型：
--
作者：
Durand, Nelly;Ameduri, Bruno;Ueda, Yasukiyo
合成了偏氟乙烯（VDF）调聚物CnF 2n +1（VDF）（m）（CH 2CH 2）（p）I，其中n=4或6，m=5-23，m = 0或1，并研究了其压电性能。采用碘转移聚合法合成了低分子量聚偏氟乙烯（PVDFs）。以1-碘代全氟烷烃（C_4F_9I或C_6F_13I）和双（4-叔丁基环己基）过氧化二氢为链转移剂和引发剂，进行了VDF的聚合反应。VDF调聚物的微观结构通过H-1和F-19核磁共振（NMR）光谱进行仔细表征，以评估平均分子量和CH 2CF 2 I官能度的百分比（范围为47至86%）。这些调聚物的X-射线衍射图表明，
Original telomers based on vinylidene fluoride (VDF), CnF2n+1(VDF)(m)(CH2CH2)(p)I, where n=4 or 6, m=5-23 and = 0 or 1, were synthesized, and the piezoelectric properties of the materials were investigated. Low-molecular-weight polyvinylidene fluorides (PVDFs) were prepared in good yields by iodine transfer polymerization of VDF. The polymerization of VDF was conducted in the presence of 1-iodoperfluoroalkanes (C4F9I or C6F13I) and bis(4-tert-butylcyclohexyl) peroxydicarbonate, which were used as a chain transfer agent and initiator, respectively. The microstructures of VDF telomers were carefully characterized by H-1 and F-19 nuclear magnetic resonance (NMR) spectroscopy to assess the average molecular weights and the percentage of CH2CF2I functionality (that ranged from 47 to 86%). X-ray diffraction patterns of these telomers indicated that PVDFs with