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Low-Temperature Dyeing of Polylactic Acid Fabrics with Microbial Prodigiosin Enabled by Natural Deep Eutectic Solvent Treatment.

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Title: Low-Temperature Dyeing of Polylactic Acid Fabrics with Microbial Prodigiosin Enabled by Natural Deep Eutectic Solvent Treatment.
Authors: Feng, Lili1,2 (AUTHOR), Dong, Shaoxin1,2 (AUTHOR), Wang, Xuetong1 (AUTHOR), Han, Yu1,2 (AUTHOR), Zhang, Hongjie1,2 (AUTHOR) zhjie016@qztc.edu.cn
Source: Polymers (20734360). May2026, Vol. 18 Issue 10, p1160. 11p.
Subjects: Textile dyeing, Solvents, Antibacterial agents, Sustainable fashion, Surface preparation, Sustainability, Biological pigments
Abstract: Polylactic acid (PLA), a biodegradable polymer derived from renewable resources, represents a promising candidate for sustainable textiles. Nevertheless, its practical application remains limited by the requirement for high-temperature dyeing, which can induce polymer hydrolysis and lead to the loss of fiber strength. To address this limitation, PLA fabric was treated with an eco-friendly natural deep eutectic solvent (NaDES) composed of glycerol and citric acid. The treatment was found to enhance fiber surface roughness and internal looseness, which facilitated dye diffusion and allowed for a significant reduction in dyeing temperature. When dyed with microbial prodigiosin, the treated PLA fabric achieved a color depth at 70 °C that was equivalent to untreated fabric at 90 °C, while also exhibiting a 93.56% bacteriostatic rate against Staphylococcus aureus due to the inherent antibacterial property of microbial prodigiosin. This work provides a novel and sustainable strategy for the eco-friendly dyeing of PLA textiles. [ABSTRACT FROM AUTHOR]
Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Low-Temperature Dyeing of Polylactic Acid Fabrics with Microbial Prodigiosin Enabled by Natural Deep Eutectic Solvent Treatment.
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  Data: <searchLink fieldCode="AR" term="%22Feng%2C+Lili%22">Feng, Lili</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Dong%2C+Shaoxin%22">Dong, Shaoxin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuetong%22">Wang, Xuetong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Yu%22">Han, Yu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Hongjie%22">Zhang, Hongjie</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> zhjie016@qztc.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Polymers+%2820734360%29%22">Polymers (20734360)</searchLink>. May2026, Vol. 18 Issue 10, p1160. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Textile+dyeing%22">Textile dyeing</searchLink><br /><searchLink fieldCode="DE" term="%22Solvents%22">Solvents</searchLink><br /><searchLink fieldCode="DE" term="%22Antibacterial+agents%22">Antibacterial agents</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainable+fashion%22">Sustainable fashion</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+preparation%22">Surface preparation</searchLink><br /><searchLink fieldCode="DE" term="%22Sustainability%22">Sustainability</searchLink><br /><searchLink fieldCode="DE" term="%22Biological+pigments%22">Biological pigments</searchLink>
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  Label: Abstract
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  Data: Polylactic acid (PLA), a biodegradable polymer derived from renewable resources, represents a promising candidate for sustainable textiles. Nevertheless, its practical application remains limited by the requirement for high-temperature dyeing, which can induce polymer hydrolysis and lead to the loss of fiber strength. To address this limitation, PLA fabric was treated with an eco-friendly natural deep eutectic solvent (NaDES) composed of glycerol and citric acid. The treatment was found to enhance fiber surface roughness and internal looseness, which facilitated dye diffusion and allowed for a significant reduction in dyeing temperature. When dyed with microbial prodigiosin, the treated PLA fabric achieved a color depth at 70 °C that was equivalent to untreated fabric at 90 °C, while also exhibiting a 93.56% bacteriostatic rate against Staphylococcus aureus due to the inherent antibacterial property of microbial prodigiosin. This work provides a novel and sustainable strategy for the eco-friendly dyeing of PLA textiles. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Polymers (20734360) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/polym18101160
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        Text: English
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      – SubjectFull: Textile dyeing
        Type: general
      – SubjectFull: Solvents
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      – SubjectFull: Antibacterial agents
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      – SubjectFull: Surface preparation
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            NameFull: Feng, Lili
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            NameFull: Dong, Shaoxin
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              M: 05
              Text: May2026
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              Y: 2026
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