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首页> 外文期刊>Microscopy and microanalysis: The official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada >Rapid Determination of the Distribution of Cellulose Nanomaterial Aggregates in Composites Enabled by Multi-Channel Spectral Confocal Microscopy
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Rapid Determination of the Distribution of Cellulose Nanomaterial Aggregates in Composites Enabled by Multi-Channel Spectral Confocal Microscopy

机译：多通道光谱共聚焦显微镜使复合材料中纤维素纳米材料骨料分布的快速测定

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摘要

There is increased interest in the use of cellulose nanomaterials for the mechanical reinforcement of composites due to their high stiffness and strength. However, challenges remain in accurately determining their distribution within composite microstructures. We report the use of a range of techniques used to image aggregates of cellulose nanocrystals (CNCs) greater than 10 mu m(2) within a model thermoplastic polymer. While Raman imaging accurately determines CNC aggregate size, it requires extended periods of analysis and the limited observable area results in poor reproducibility. In contrast, staining the CNCs with a fluorophore enables rapid acquisition with high reproducibility, but overestimates the aggregate size as CNC content increases. Multi-channel spectral confocal laser scanning microscopy is presented as an alternative technique that combines the accuracy of Raman imaging with the speed and reproducibility of conventional confocal laser scanning microscopy, enabling the rapid determination of CNC aggregate distribution within composites.
机译：由于其高刚度和强度，对使用纤维素纳米材料进行纤维素纳米材料的利益增加。然而，挑战仍然准确地确定复合微结构内的分布。我们报告使用用于在模型热塑性聚合物中的纤维素纳米晶体（CNC）的纤维素纳米晶体（CNC）的聚集的技术的使用。虽然拉曼成像精确地确定CNC骨料大小，但它需要延长的分析，但可观察区域有限导致再现性差。相反，用荧光团染色CNC可以快速采集，具有高再现性，但在CNC含量增加时估计聚集体大小。多通道光谱共聚焦激光扫描显微镜作为一种替代技术，将拉曼成像与常规共聚焦激光扫描显微镜的速度和再现性结合的替代技术，能够快速测定复合材料中的CNC骨料分布。

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