Crystal phase transformation of α into β phase poly(vinylidene fluoride) via particle formation caused by rapid expansion of supercritical solutions
Crystal phase transformation of α into β phase poly(vinylidene fluoride) via particle formation caused by rapid expansion of supercritical solutions
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DOI：
10.1039/c5ra12142f
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发表时间：
2015-01-01
期刊：
影响因子：
3.9
通讯作者：
Turk, M.
中科院分区：
文献类型：
--
作者：
Wolff, S.;Jirasek, F.;Turk, M.
这篇文章报道了超临界溶液(RESS)的快速膨胀对聚偏氟乙烯(PVDF)性能的影响，包括颗粒尺寸、摩尔质量分布、晶相以及最终的压电行为。基于a相PVDF粉末的使用，得到了晶相转变为β形式的亚微米粒子。此外，最先进的压电响应力显微镜分析证实了通过RESS形成了压电PVDF颗粒。
This contribution reports on the impact of the rapid expansion of supercritical solutions (RESS) on poly(vinylidene fluoride) (PVDF) properties in terms of particle size, molar mass distribution, crystal phase and finally piezoelectric behavior. Based on the usage of a phase PVDF powders, submicron particles were obtained involving crystal phase conversion to the beta form. Moreover, state of the art piezoresponse force microscopy analysis verifies the formation of piezoelectric PVDF particles via RESS.