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首页> 外文期刊>Journal of Applied Polymer Science >AFM and UFM Surface Characterization of Rubber-Toughened Poly(methyl methacrylate)Samples
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AFM and UFM Surface Characterization of Rubber-Toughened Poly(methyl methacrylate)Samples

机译：橡胶增韧聚甲基丙烯酸甲酯样品的AFM和UFM表面表征

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摘要

The microstructure of a series of injection-molded and extruded rubber-toughened poly(methyl methacrylate)(RTPMMA)samples was investigated.Atomic force microscopy (AFM) and ultrasonic force microscopy (UFM) were used to study surface topography and local elastic properties.AFM toporgaphy measurements com-bined with UFM can reveal the distribution and orientation of the rubber particles in the PMMA matrix.UFM.in particular,reveals the core-shell structure of the particles in as well as the presence of particles immediately under the surface,otherwise invisible.In some cases the particles appear to be covered by a thin PMMA layer,whereas in other cases they appear to have broken,thereby exposing parts of their internal structure.Generally,the particles are elongated in the skin region of the injection-molded samples.On the other hand,the particles in the surface region of the extruded samples appear to be almost spherical.The observed difference is attributed to the fountain flow phenomenon,which takes place during injection molding.
机译：研究了一系列注射成型和挤出的橡胶增韧的聚甲基丙烯酸甲酯（RTPMMA）样品的显微结构。原子力显微镜（AFM）和超声力显微镜（UFM）用于研究表面形貌和局部弹性。 AFM断层照相术测量与UFM结合可以揭示橡胶颗粒在PMMA基质中的分布和取向。UFM特别是揭示了颗粒的核-壳结构以及表面下直接存在的颗粒，在某些情况下，颗粒似乎被薄的PMMA层覆盖，而在另一些情况下，颗粒似乎已破裂，因此暴露了其内部结构的一部分。通常，颗粒在注射的皮肤区域中拉长-另一方面，挤出样品的表面区域中的颗粒似乎几乎是球形的。观察到的差异归因于喷泉流现象。非，这发生在注塑过程中。

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