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首页> 外文期刊>Journal of Applied Polymer Science >Quantification of Surface Forces of Thermoplastic Elastomeric Nanocomposites Based on Poly(styrene-ethylene-co-butylene-styrene) and Clay by Atomic Force Microscopy
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Quantification of Surface Forces of Thermoplastic Elastomeric Nanocomposites Based on Poly(styrene-ethylene-co-butylene-styrene) and Clay by Atomic Force Microscopy

机译：原子力显微镜定量分析基于聚苯乙烯-乙烯-共-丁烯-苯乙烯和粘土的热塑性弹性体纳米复合材料的表面力

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摘要

Atomic force microscopy was used for qualitative phase morphological mapping as well as quantitative investigation of surface forces measured at constituting blocks and clay regions of a thermoplastic elastomeric nanocomposite based on triblock copolymer: poly(styrene-ethylene-co-butylene-styrene) (SEBS) and organically modified nano-clay. The roughness and power spectral density analyses Of surface topography provided the increment in random roughness of the nanocomposite surface compared to pristine SEBS surface. The Same surfaces were examined by means of single point force-distance, and force-volume measurements. Large adhesive force of 25 nN and contact force of 260 nN were found in soft polyethylene (PEB) segments and higher cantilever deflection of 210 nm was found for clay regions of SEBS-clay nanocomposite. Mapping of elastic modulus of the glassy and rubbery blocks and clay regions was probed by employing Hertzian and JKR model from respective, approaching and retracting parts of force-distance curves. (C) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 111: 2104-2115, 2009
机译：原子力显微镜用于定性相形态图以及定量研究基于三嵌段共聚物的热塑性弹性体纳米复合材料的构成嵌段和粘土区域的表面力：聚（苯乙烯-乙烯-共-丁烯-苯乙烯）（SEBS）和有机改性的纳米粘土。与原始SEBS表面相比，表面形貌的粗糙度和功率谱密度分析提供了纳米复合材料表面随机粗糙度的增加。通过单点力距和力-体积测量来检查相同的表面。在软质聚乙烯（PEB）链段中发现了25 nN的大粘附力和260 nN的接触力，并且SEBS-粘土纳米复合材料的粘土区域发现了210 nm的更高悬臂挠度。通过采用Hertzian和JKR模型，分别从力-距离曲线的各个，逼近和缩回部分，探索了玻璃状和橡胶状块以及粘土区域的弹性模量映射。 （C）2008 Wiley Periodicals，Inc. J Appl Polym Sci 111：2104-2115，2009年

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