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Types of Step-Growth Polymers: Polyesters01:20

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
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Preparation of Light-responsive Membranes by a Combined Surface Grafting and Postmodification Process
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Bio-surface modification of polyester containing fabrics using lipase for post-multifunctionalization.

Nabil A Ibrahim1, Hala A Amin2, Hanan M Ahmed2

  • 1Institute of Textile Research and Technology, National Research Centre, 33 EL Buhouth St, P.O. 12622, Dokki, Giza, Egypt.

Scientific Reports
|October 14, 2025
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Summary

This study presents a sustainable method to create eco-friendly textiles with antibacterial, anti-UV, and fragrance properties using fungal lipase and natural additives. The developed process yields multifunctional textiles and the lipase can also remove oil stains.

Keywords:
Fungal lipaseGreen multifunctionalized textilesOil stains removalPost-functionalizationPotential textile applicationPreparation and characterizationSurface modifications

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Area of Science:

  • Textile Chemistry
  • Biotechnology
  • Materials Science

Background:

  • Traditional textile finishing often involves harsh chemicals, posing environmental concerns.
  • There is a growing demand for sustainable and eco-friendly textile treatments with added functionalities.
  • Fungal lipases offer a biodegradable and efficient enzymatic solution for textile modification.

Purpose of the Study:

  • To develop an eco-friendly, sustainable pre-surface modification and post-functional finishing strategy for textile substrates.
  • To impart antimicrobial, anti-UV, and fragrance-releasing properties to textiles using green additives.
  • To evaluate the effectiveness of fungal lipase from Aspergillus niger and various finishing agents.

Main Methods:

  • Utilized locally produced fungal lipase from Aspergillus niger for pre-surface modification of textile substrates.
  • Applied post-functional finishing with vanillin and/or zinc oxide nanoparticles (ZnONPs) as additives.
  • Employed citric acid/sodium hypophosphite (CA, SHP) as an ester-crosslinking agent with a pad-dry-microwave fixation technique.
  • Characterized fabric properties including antibacterial activity, UV protection, fragrance release, nitrogen content, weight loss, and surface roughness using SEM and EDX analyses.

Main Results:

  • The developed method successfully imparted antibacterial, anti-UV, and aroma fragrance release properties to textiles.
  • The degree of surface modification and functionalization was dependent on lipase dosage, substrate type, and additive concentration.
  • SEM and EDX analyses confirmed the successful modification and functionalization of the fabric surfaces.
  • The produced fungal lipase also demonstrated potential for oil stain removal from textiles.

Conclusions:

  • The environmentally sound strategy effectively produces green, sustainable textiles with multiple functionalities.
  • This approach offers a viable alternative to conventional textile finishing methods, reducing environmental impact.
  • The fungal lipase serves a dual purpose, enabling textile functionalization and potential bioremediation of oil stains.