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首页> 外文期刊>Journal of Applied Polymer Science >Dispersion characterization in layered double hydroxide/Nylon 66 nanocomposites using FIB imaging
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Dispersion characterization in layered double hydroxide/Nylon 66 nanocomposites using FIB imaging

机译：使用FIB成像表征双层氢氧化物/尼龙66纳米复合材料的分散特性

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摘要

Layered double hydroxides (LDHs), a newly emerging 2D host material, consist of cationic brucite-like layers and exchangeable interlayer anions. In this work, the morphology and dispersion of LDH particles in LDH/ Nylon 66 (salt) nanocomposites has been investigated using focused ion beam (FIB) techniques, transmission electron microscopy (TEM) and X-ray diffraction (XRD). The FIB images show that LDHs are present in the polymer phase dispersed to different degrees, with partial intercalation, exfoliation, and aggregation all being observed. The most even dispersion was achieved in nanocomposites with the lowest loading (0.5 wt % LDH). Residual tactoids and agglomerates were most common in the samples made with the highest concentration of LDHs studied here (5 wt %). The dispersion observed using FIB was consistent with TEM and XRD analysis, yet this technique had significant benefits in terms of time and simplicity over these "conventional" technologies. (C) 2008 Wiley Periodicals, Inc.
机译：层状双氢氧化物（LDHs）是一种新兴的2D主体材料，由阳离子水镁石样层和可交换的层间阴离子组成。在这项工作中，已使用聚焦离子束（FIB）技术，透射电子显微镜（TEM）和X射线衍射（XRD）研究了LDH /尼龙66（盐）纳米复合材料中LDH颗粒的形态和分散性。 FIB图像显示，LDHs以不同程度分散在聚合物相中，同时观察到部分嵌入，剥落和聚集。在具有最低负载量（0.5 wt％LDH）的纳米复合材料中实现了最均匀的分散。在此处研究的LDHs浓度最高（5 wt％）的样品中，残留的类固醇和附聚物最为常见。使用FIB观察到的色散与TEM和XRD分析一致，但是与这些“常规”技术相比，该技术在时间和简便性方面均具有显着优势。 （C）2008 Wiley期刊公司

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