Time-resolved laser spectroscopy for the in situ characterization of methacrylate monomer flow within spruce
Time-resolved laser spectroscopy for the in situ characterization of methacrylate monomer flow within spruce
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DOI：
10.1007/s00226-016-0882-5
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发表时间：
2017-03-01
影响因子：
3.4
通讯作者：
Scherman, Oren A.
中科院分区：
文献类型：
--
作者：
Janecek, Emma-Rose;Walsh-Korb, Zarah;Scherman, Oren A.
利用时间分辨漫反射光谱(TRS)研究了甲基丙烯酸酯单体在云杉(Picea Abies)体内浸渍后的分布。TRS还被用来监测浸渍过程中甲基丙烯酸酯单体在云杉内的流动，具有空间和时间分辨率。这些数据与达西和布拉姆霍尔开发的流体流动模型进行了比较，表明这两个模型都不能准确地描述实验结果，这突显了开发新模型的必要性。TRS的无损表征不需要单体处理溶液的染色、多元分析或复杂的样品前处理，从而突出了该技术的简便易行的适用性。
Time-resolved diffuse optical spectroscopy (TRS) was investigated as a nondestructive method to characterize the post-impregnation distribution of methacrylate monomers within spruce (Picea abies). TRS was also used to monitor the flow of methacrylate monomers in situ, within spruce, during impregnation with both spatial and temporal resolution. The data were compared to fluid flow models developed by Darcy and Bramhall demonstrating that neither of these models were able to accurately describe the experimental results, highlighting the need for development of new models. Nondestructive characterization by TRS did not require staining of the monomer treatment solution, multivariate analysis or complex sample pre-treatment, thus highlighting the facile applicability of this technique.