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<p>Bacterial cellulose (BC), well-known for its 3D nanofibrillar network, faces limitations in its dehydrated form due to rigidity and structural instability. This research explores a sustainable approach to overcome these drawbacks by employing low-energy electron beam irradiation (EBI) at 300&#xa0;keV with low absorbed dose of 10&#xa0;kGy in conjunction with polyethylene glycol (PEG) and glycerol as plasticizers. EBI, a green technology, induced cross-linking within the BC, enhanced by plasticizer-mediated polymeric mobility, with PEG demonstrating superior plasticization effects post-washing. This finding resulted in a significant softening of BC, a tenfold reduction in bending modulus (to 301.3 ± 79.5&#xa0;MPa), and enhanced cool feeling, indicated by a 3-time rise of maximum heat flux (to 0.225 ± 0.024&#xa0;W/cm<sup>2</sup>). Furthermore, compared to untreated BC, EBI treatment of BC/PEG composites enhanced tensile strength (1.5-fold to 33.3 ± 2.6&#xa0;MPa) and elongation (fourfold to 9.8 ± 1.2%), altering moisture regain and hydrophilicity. These findings highlight the promising potential of low-dose EBI for saving energy and maintaining the core characteristics of BC from EBI-induced decomposition, while facilitating significant structural alterations in BC/PEG composites through successful plasticizer integration, enhancing overall performance to expand the applications of dehydrated BC in fields including healthcare and textiles through sustainable material development.</p> Graphical abstract <p></p>

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Sustainable modification of dehydrated bacterial cellulose by low-absorbed-dose electron beam irradiation for textile applications: plasticizer effects for sustainability implications

  • 期刊论文

  • 发表日期：

    2026年3月11日

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  • Hung Ngoc Phan,
  • Satoko Okubayashi

摘要

Bacterial cellulose (BC), well-known for its 3D nanofibrillar network, faces limitations in its dehydrated form due to rigidity and structural instability. This research explores a sustainable approach to overcome these drawbacks by employing low-energy electron beam irradiation (EBI) at 300 keV with low absorbed dose of 10 kGy in conjunction with polyethylene glycol (PEG) and glycerol as plasticizers. EBI, a green technology, induced cross-linking within the BC, enhanced by plasticizer-mediated polymeric mobility, with PEG demonstrating superior plasticization effects post-washing. This finding resulted in a significant softening of BC, a tenfold reduction in bending modulus (to 301.3 ± 79.5 MPa), and enhanced cool feeling, indicated by a 3-time rise of maximum heat flux (to 0.225 ± 0.024 W/cm2). Furthermore, compared to untreated BC, EBI treatment of BC/PEG composites enhanced tensile strength (1.5-fold to 33.3 ± 2.6 MPa) and elongation (fourfold to 9.8 ± 1.2%), altering moisture regain and hydrophilicity. These findings highlight the promising potential of low-dose EBI for saving energy and maintaining the core characteristics of BC from EBI-induced decomposition, while facilitating significant structural alterations in BC/PEG composites through successful plasticizer integration, enhancing overall performance to expand the applications of dehydrated BC in fields including healthcare and textiles through sustainable material development.

Graphical abstract