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| Study on Air Filtration Performance of Microfibrillated Cellulose/Glass Fiber Aerogels |
| Received:October 09, 2025 Revised:November 04, 2025 |
| DOI：10.11980/j.issn.0254-508X.2026.03.008 |
| Key Words:air filtration aerogels glass fiber microfibrillated cellulose |
| Author Name | Affiliation | Postcode | | ZHANG Ziyan* | School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | KANG Jiancong | School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 | | LI Xiaoyun* | School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong Province, 510640 | 510640 |
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| Abstract:To address the high airflow resistance commonly associated with achieving high filtration efficiency in conventional air filtration materials， this study employed glass fibers (GF) as the matrix and introduced microfibrillated cellulose (MFC) to construct MFC/GF aerogels with a three-dimensional network structure. The composite was further modified via silanization using methyltrimethoxysilane (MTMS) and subsequently fabricated into microfibrillated cellulose/glass fiber aerogel filter materials (GMM) through a freeze-drying process. By regulating the MFC content and MTMS modification concentration， the prepared GMM were characterized in terms of their microstructure， filtration performance， mechanical properties， and hydrophobicity. The results showed that adding 0.1% MFC increased the filtration efficiency from 99.64% to 99.91% compared with GF. After MTMS modification， the pressure drop of the GMM decreased significantly while maintaining high filtration efficiency (>99.50%)， reaching as low as 145.58 Pa with a quality factor of 0.039 Pa-1. The GMM also exhibited a well-developed continuous porous structure (average pore size of 4.07 μm and air permeability of 79 mm·s-1). Moreover， MTMS markedly enhanced the mechanical strength （the compressive modulus reached 134.02 kPa， 15 times that of MFC/GF aerogel) and hydrophobicity (water contact angle of 131.7°). |
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