Quantitative characterization of the interface between bamboo fiber and polypropylene with pull-out test and nanomechanical imaging

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• 作者：Dan Ren ; Zixuan Yu ; Xuexia Zhang ; Hankun Wang ; Hao Wang…
• 刊名：Journal of Materials Science
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：52
• 期：3
• 页码：1296-1307
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Materials Science, general; Characterization and Evaluation of Materials; Polymer Sciences; Continuum Mechanics and Mechanics of Materials; Crystallography and Scattering Methods; Classical Mechanics;
• 出版者：Springer US
• ISSN：1573-4803
• 卷排序：52

文摘

Single-fiber pull-out test was adopted to quantitatively assess the respective contribution of physical and chemical interactions to the interfacial bonding between bamboo fiber (BF) and polypropylene (PP), which was regulated with different concentrations of maleated polypropylene (MAPP) and silane (KH-550) coupling agents. Meanwhile, a new AFM-based nanomechanical imaging technique, namely the peakforce quantitative nanomechanics (PQNM), was used for mechanically imaging the interface of the resulting composites. The interfacial shear strength (IFSS) was found to be positively correlated to the concentration of MAPP and silane, but with less significance for the latter. Furthermore, the respective contribution of physical and chemical bondings to the total IFSS can be approximately quantified. PQNM was capable of mechanically visualizing the different cell wall layers of BFs and their interface with PP matrix, but failed to discriminate the so-called interphase layer that is normally characterized with dozens of nanometers in thickness.