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Glass bead–fiber mixed porous materials with tunable interconnected channel structures were prepared, and the influence of fiber-induced channel subdivision on water-flow behavior was investigated using X-ray CT–based analyses. Incorporation of milled glass fibers into interconnected channels formed between fused glass beads effectively subdivided relatively large channels. As a result, the number of pores increased and the average pore size decreased without major changes in overall porosity. CT-based flow analyses revealed that increasing fiber content reduced local water velocity and generated heterogeneous preferential flow pathways associated with channel subdivision. Tracer-particle analysis further indicated limited lateral displacement within the porous structures, indicating restricted transport pathways despite local flow heterogeneity. These results demonstrate that subdivision of interconnected channels influences local transport behavior in sintered glass-based porous materials. Preliminary microplastic capture experiments further indicated that incorporated fibers and additional layered double hydroxide deposition contributed to particle retention within the interconnected channels. Thus, this study provides a basis for designing structure-flow relationships in sintered glass-based porous materials.

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  This is the pre-peer reviewed version of the following article: S. Machida, S. Matsushita, Y. Mizuta, et al. “Interconnected Channel Subdivision and Flow Behavior in Sintered Glass Bead–Fiber Mixed Filters.” Journal of the American Ceramic Society109, no. 6 (2026): e70925, which has been published in final form at https://doi.org/10.1111/jace.70925. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.

Keyword: Glass, X-ray CT, Sintering, Microstructure

Date published: 2026-06-16

Publisher: Wiley

Journal:

• JOURNAL OF THE AMERICAN CERAMIC SOCIETY (ISSN: 00027820) vol. 109 issue. 6

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Manuscript type: Author's version (Submitted manuscript)

MDR DOI: https://doi.org/10.48505/nims.6341

First published URL: https://doi.org/10.1111/jace.70925

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Updated at: 2026-06-17 09:53:29 +0900

Published on MDR: 2026-06-17 12:39:59 +0900