Simultaneous 3D Printing and Poling of PVDF and Its Nanocomposites
Simultaneous 3D Printing and Poling of PVDF and Its Nanocomposites
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DOI：
10.1021/acsaem.7b00337
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发表时间：
2018-06-01
影响因子：
6.4
通讯作者：
Therriault, Daniel
中科院分区：
文献类型：
--
作者：
Bodkhe, Sampada;Rajesh, P. S. M.;Therriault, Daniel
鉴于对定制和小型化的需求不断增长，压电聚合物的原位三维（3D）打印是通过多材料打印来满足智能结构的有效手段。将我们的混合印刷技术应用于聚偏二氟乙烯钛酸钡（PVDF-BaTiO 3）纳米复合材料，以将制造和高压极化步骤联合收割机结合，缩短了制造时间，克服了非共形压电膜或织物中粘附的缺点，并增加了按需应用的灵敏度和范围。一个显着的300%的压电电荷输出的改善后，实现了添加10重量%的钛酸钡纳米粒子和应用程序的电场为1 MV m（-1）相比，印刷unpoled纯PVDF。我们展示了应用程序的原位极化过程中的传感器的形式直接印刷在鞋垫上的步态分析。在这项工作中制造的传感器有效地区分步行和冲压作为便携式鞋内传感器以及传感器连接到地面。
Given the ever-increasing demand for customization and miniaturization, in situ three-dimensional (3D) printing of piezoelectric polymers comes as an efficient means to cater to smart structures via multimaterial printing. Applying our hybrid printing technique to polyvinylidene-fluoride barium-titanate (PVDF-BaTiO3) nanocomposites, to combine the fabrication and high-voltage poling steps, shrinks the manufacturing time, overcomes the disadvantages of adherence in nonconformal piezoelectric films or fabrics, and increases the sensitivity and scope for on-demand applications. A remarkable 300% improvement in piezoelectric charge output is achieved upon the addition of 10 wt % BaTiO3 nanoparticles and application of an electric field of 1 MV m(-1) compared with printed unpoled neat PVDF. We demonstrate the application of the in situ poling process in the form of sensors printed directly on a shoe insole for gait analysis. The sensors fabricated in this work effectively distinguish between walking and stamping as both portable in-shoe sensor as well as sensors attached to the ground.