Surface characterization of hydrosilylated polypropylene: Contact angle measurement and atomic force microscopy
Surface characterization of hydrosilylated polypropylene: Contact angle measurement and atomic force microscopy
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DOI：
10.1021/la001547u
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发表时间：
2001-05-15
期刊：
影响因子：
3.9
通讯作者：
Chen, P
中科院分区：
文献类型：
--
作者：
Long, J;Chen, P
本文用轴对称液滴形状分析(ADSA-P)和原子力显微镜(AFM)研究了聚丙烯(PP)和硅氢化聚丙烯(SPP)的表面特征。用ADSA-P测量静态和动态接触角。根据静态接触角测量结果计算了水的渗透率。据我们所知，这是首次尝试使用ADSA-P获得渗透率。PP的透水性和润湿性均大于SPP。采用状态方程等方法计算了表面自由能，并考虑了表面粗糙度对表面自由能的影响。利用原子力显微镜获得了样品表面的形貌图像。与PP相比，SPP表面呈现出更大但更光滑的峰。计算结果表明，SPP比PP具有更低的表面自由能。PP和SPP的表面都可以建模为均匀但粗糙的表面。
In this study, axisymmetric drop shape analysis-profile (ADSA-P) and atomic force microscopy (AFM) were employed to study the surface features of polypropylene (PP) and hydrosilylated polypropylene (SPP). Static and dynamic contact angles were measured using ADSA-P. Water permeability was calculated from the results of static contact angle measurements. To our knowledge, this is the first attempt to obtain permeability using ADSA-P. The water permeability and wettability of PP are greater than those of SPP. Surface free energy was calculated by the equation of state theory and other methods, and the influence of surface roughness on surface free energy was taken into consideration and incorporated into the calculation. Topographic images of the sample surfaces were obtained using AFM. Compared to PP, the SPP surface shows larger but smoother peaks. Calculated results show that SPP has a lower surface free energy than PP. The surfaces of both PP and SPP can be modeled as a homogeneous but rough surface.