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首页> 外文期刊>Polymers for advanced technologies >Biodegradable poly(p-dioxanone) reinforced and toughened by organo-modified vermiculite
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Biodegradable poly(p-dioxanone) reinforced and toughened by organo-modified vermiculite

机译：有机改性ver石可增强和增韧可生物降解的聚对二氧杂环己酮

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摘要

Poly(p-dioxanone) (PPDO)/vermiculite (VMT) nanocomposites with exfoliated structure were prepared successfully by in situ intercalative polymerization of p-dioxanone (PDO) in the presence of organo-modified vermiculite (OVMT) with the aid of ultrasonic action. The nano-structure of the nanocomposites was established using X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) observations. The investigation of crystallization behavior by differential scanning calorimetry (DSC) and polarized optical microscopy (POM) proved that exfoliated OVMT platelets acted as a template for spherulite growth. The thermal stability of nanocomposites was enhanced than that of pure PPDO. Dynamic mechanical analysis (DMA) indicated nanoscale OVMT platelets restricted the motion of PPDO segments, which benefited the increase of storage and loss modulus. The tensile properties showed that nanocomposites were reinforced and toughened significantly by the addition of nanoscale OVMT platelets.
机译：在有机改性ver石（OVMT）的存在下，借助超声作用，通过对二氧杂蒽酮（PDO）的原位插层聚合反应，成功制备了具有剥离结构的聚对二恶烷酮（PPDO）/ ver石（VMT）纳米复合材料。 。纳米复合材料的纳米结构是使用X射线衍射（XRD）分析和透射电子显微镜（TEM）观察建立的。通过差示扫描量热法（DSC）和偏振光学显微镜（POM）对结晶行为的研究证明，剥落的OVMT血小板充当了球晶生长的模板。纳米复合材料的热稳定性比纯PPDO增强。动态力学分析（DMA）表明，纳米级OVMT血小板限制了PPDO段的运动，这有利于增加储存模量和损失模量。拉伸性能表明，通过添加纳米级OVMT血小板，纳米复合材料得到了显着增强和增韧。

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