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首页> 外文期刊>Journal of Applied Polymer Science >FT-NIR as a Determination Method for Reinforcement of Polymer Nanocomposites
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FT-NIR as a Determination Method for Reinforcement of Polymer Nanocomposites

机译：FT-NIR作为增强聚合物纳米复合材料的测定方法

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摘要

Layered silicates as nanoscale fillers have a great potential in improving polymer material properties. Depending on the composite structure (agglomerated, intercalated, or exfoliated) a significantly higher level of reinforcement of the virgin polymer can be achieved with a very small amount of filler. The morphology of the composites is usually characterized by XRD and microscopic methods (e.g., transmission electron microscopy). But the level of reinforcement of nanocomposites is not always proportional to morphology (delamination level of the silicate layers). A new approach for characterizing the material reinforcement level as a consequence of melt quality is to correlate the results of extensional rheometry (level of melt strength) with those of near infrared (NIR) spectroscopy. The advantage of the NIR technique is the suitability for in-line implementation by using quartz based optics and optical fibers for the signal transfer from the measuring probe to the NIR spectrometer. The presented results show a direct correlation between the reinforcement level determined by rheotens measurements and the data analyzed from off-line NIR measurements. The results of the chemometric analysis of the NIR data shows that this in-line capable optical method provides quantitative information on the quality of the nanocomposite.
机译：作为纳米级填料的层状硅酸盐在改善聚合物材料性能方面具有巨大潜力。取决于复合结构（附聚，插层或剥离），可以用很少量的填料实现更高水平的原始聚合物增强。复合物的形态通常通过XRD和显微方法（例如，透射电子显微镜）表征。但是，纳米复合材料的增强水平并不总是与形态（硅酸盐层的分层水平）成正比。表征由于熔体质量而导致的材料增强水平的一种新方法是将延伸流变法（熔体强度水平）的结果与近红外（NIR）光谱的结果相关联。 NIR技术的优点是适用于在线实现，方法是使用基于石英的光学器件和光纤将信号从测量探头传输到NIR光谱仪。呈现的结果表明，由流变测量确定的增强水平与离线NIR测量分析的数据之间具有直接的相关性。 NIR数据的化学计量分析结果表明，这种在线功能光学方法可提供有关纳米复合材料质量的定量信息。

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