AFM imaging and nanoindentation of polymer of intrinsic microporosity PIM-1
AFM imaging and nanoindentation of polymer of intrinsic microporosity PIM-1
复制标题
固有微孔聚合物 PIM-1 的 AFM 成像和纳米压痕
DOI：
10.1016/j.ijhydene.2017.04.081
复制
发表时间：
2017
影响因子：
7.2
通讯作者：
Polak-Krasna K
中科院分区：
文献类型：
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作者：
Polak-Krasna K
固有微孔聚合物（PIM）具有良好的气体吸附性能，可用于潜在的应用，例如结合到高压储氢罐中以增加存储容量或降低操作压力。此类应用需要详细的机械表征和结构-性能关系的确定，以优化聚合物和储罐之间的界面。在这项研究中，我们表明原子力显微镜 (AFM) 纳米压痕可用于确定铸造 PIM-1 薄膜的弹性模量，并且该特性与深度相关。实验获得的弹性模量平均值为1.87 GPa，并与之前研究中获得的弹性拉伸模量和储能拉伸模量进行了比较。此外，还使用扫描电子显微镜 (SEM) 和 AFM 成像来研究流延 PIM-1 薄膜的表面结构，该薄膜已被证明是高度颗粒状的。
Polymers of intrinsic microporosity (PIMs) have promising gas adsorption properties for potential applications such as incorporation into high-pressure hydrogen storage tanks in an effort to increase the storage capacity or decrease the operating pressure. Such applications require detailed mechanical characterisation and determination of the structure-properties relationships to enable optimisation of the interface between the polymer and the tank. In this study, we show that Atomic Force Microscopy (AFM) nanoindentation can be used to determine the elastic modulus of cast PIM-1 films and that this property is depth-dependent. Average values of elastic modulus obtained experimentally were 1.87 GPa and are compared with elastic tensile modulus and storage tensile modulus obtained in previous studies. In addition, Scanning Electron Microscopy (SEM) and AFM imaging was performed to investigate the surface structure of the cast PIM-1 film, which has been shown to be highly granular.