# Bio-surface modification of polyester containing fabrics using lipase for post-multifunctionalization

## TL;DR

This paper presents a green method to modify polyester fabrics using fungal lipase and natural additives, creating textiles with antibacterial, UV protection, and fragrance-releasing properties.

## Contribution

A sustainable, enzyme-based pre-treatment method combined with eco-friendly post-functionalization for multifunctional textile production.

## Key findings

- The extent of modification depends on lipase dose, substrate type, and additive concentration.
- Finished fabrics showed antibacterial, anti-UV, and fragrance-releasing properties.
- SEM and EDX confirmed surface and compositional changes in treated fabrics.

## Abstract

An eco-friendly, sustainable approach for pre-surface modification of various textile substrates using locally produced fungal lipase from Aspergillus niger HANAN-EGY strain, followed by post-functional finishing using vanillin and/or zinc oxide nanoparticles (ZnONPs) as green functional additives, citric acid/sodium hypophosphite (CA, SHP) as ester-crosslinking agent, and the pad-dry-microwave fixation technique was developed. The imparted antibacterial, anti-UV, and aroma fragrance release functional properties, along with the change in %N of wool containing fabrics, loss in weight, as well as the surface roughness, were evaluated. SEM and EDX analyses were also performed on selected finished fabric samples. The data so obtained demonstrated that the extent of pre-surface modification and subsequent multifunctionalization is governed by the lipase dose, type of substrate, as well as kind and concentration of functional additive. The adoption and implementation of the suggested environmentally sound strategy results in the production of green, sustainable, antimicrobial, anti-UV, and fragrance-releasing textiles. On the other hand, the produced fungal lipase could be used to remove oil stains.