Conductometric Analysis for the Formation of Poly(Vinylidene Fluoride)-Based Ion Track Membranes
Conductometric Analysis for the Formation of Poly(Vinylidene Fluoride)-Based Ion Track Membranes
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聚偏二氟乙烯离子径迹膜形成的电导分析
DOI：
10.1149/1.3643329
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
and R. Neumann
中科院分区：
文献类型：
--
作者：
T. Yamaki;N. Nuryanthi;H. Koshikawa;M. Asano;S. Sawada;S. Hasegawa;Y. Maekawa;K.-O. Voss;C. Trautmann;and R. Neumann
用450 MeV 129 μ m和2.2 GeV 197 Au离子束辐照聚偏二氟乙烯（PVDF）膜，然后在已倒入电导池中的80 ℃下的9 mol dm-3 KOH水溶液中蚀刻所得的潜在径迹。同时，通过测量穿过膜的电导来监测圆柱形纳米孔的演变。这种原位测量使我们能够研究蚀刻动力学如何受到各种实验条件的影响，包括轰击离子的参数（质量和速度）和施加在电极之间的电池电压。轨道蚀刻速率，VT，径向蚀刻速率，VR，和孔半径达到最终平台显着依赖于每个轨道内的沉积能量，这是由线性能量转移（LET）表示。有趣的是，施加更高的电压的细胞促进轨道蚀刻的突破，可能是因为电泳迁移的溶解产物发生的每个孔。
Poly (vinylidene fluoride)(PVDF) films were irradiated with 450 MeV 129 Xe and 2.2 GeV 197 Au ion beams, and then the resulting latent tracks were etched in a 9 mol dm-3 aqueous KOH solution at 80ºC that had been poured into a conductometric cell. At the same time, the evolution of cylindrical nanopores was monitored by measuring the conductance through the membrane. This in-situ measurement enabled us to examine how the etching kinetics were affected by the various experimental conditions including the parameters (mass and velocity) of the bombarded ions and cell voltages applied between the electrodes. The track etch rate, VT, radial etch rate, VR, and pore radius reaching the final plateau significantly depended on the deposited energy within each track, which is represented by the linear energy transfer (LET). Interestingly, applying a higher voltage to the cell promoted track etching up to the breakthrough probably because the electrophoretic migration of dissolved products occurred out of each pore.