4.6 Article

Dynamic X-ray micotomography of microfibrous cellulose liquid foams using deep learning

期刊

CHEMICAL ENGINEERING SCIENCE
卷 248, 期 -, 页码 -

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2021.117173

关键词

Liquid foams; Dynamic micro-CT; Image segmentation; Convolutional neural network (CNN); Deep-learning; Microfibrous cellulose nanofibers (MFC)

资金

  1. Australian Government Research Training Program (RTP) Scholarship
  2. UNSW Research Infrastructure Scheme
  3. ARC [DP190102614]

向作者/读者索取更多资源

The article introduces a method of using micro-CT technology to conduct three-dimensional microstructural analysis of foam, and improves the image collection and analysis capabilities through deep learning. The study evaluates the stability mechanism of microfibrillar cellulose in foam, explains the effect of fiber entrapment on foam structure stability, and provides detailed analysis of the data and evaluation of deep learning methods.
Using X-ray microcomputed tomography (micro-CT) as a 3D microstructural analysis tool elucidates the time evolution of foam Plateau borders and nodes, providing unprecedented vision of foam dynamics. Deep learning facilitates the capability by allowing for quantifiable images to be collected at the time scale of five minutes. The stability mechanism of microfibrous cellulose is assessed demonstrating that trapping of fibers in the foam structure results in a critical concentration that marks an arrested foam. The mechanism of arrest is explained by 3D structural information extracted from micro-CT and confocal laser scanning microscopy images demonstrating the entanglement of cellulose fibers. A detailed analysis of the micro-CT data is provided to substantiate the quantitative nature of the digital images and assess advanced deep learning approaches. It is demonstrated that deep learning allows for the dynamic imaging of liquid foams whereas traditional data processing approaches cannot capture accurate geometrical information of foam structure. (c) 2021 Elsevier Ltd. All rights reserved.

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