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A sustainable approach for providing water repellency in textiles by using long-chain cellulose esters

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Abstract

Long-chain cellulose esters (LCCEs) are recently developed cellulose derivatives showing properties that are relevant to diverse applications, such as coatings, films and plastics. The nonpolar aliphatic tails of the fatty ester groups impart strong hydrophobic properties to LCCEs, the physicochemical basis for most of the proposed uses. In previous work, we developed LCCE-based formulations as hydrophobicity-promoting agents for pure cotton textiles. Herein, we aimed to expand the use of LCCEs as eco-friendly hydrophobic additives in textiles with different compositions, namely synthetic fibers and mixtures thereof. The LCCE-based formulations were applied by a conventional textile dry-cleaning industrial process, using three types of solvents (one conventional and two green alternative ones). We observed that even for synthetic fibers or blends, there was no need to use crosslinkers to anchor LCCEs to textiles, nor need for pre-treatments to promote an increase in hydrophobic capacity. Water-repellent textiles were thus obtained through sustainable flourine-free compounds, with easy and self-cleaning properties.

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Funding

This work was supported by a PhD grant (ref SFRH/BD/138665/2018) financed by national funds through Fundação para a Ciência e a Tecnologia I.P and by the North Portugal Regional Operational Programme under Portugal 2020 through the European Social Fund (ESF). Financial support from CIQUP (UIDB/00081/2020) and IMS (LA/P/0056/2020) are also gratefully acknowledged.

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CC: investigation, formal analysis, validation, writing–original draft, writing—review & editing; CS: supervision, writing—review & editing; EFM: supervision, resources, funding acquisition, writing–review & editing; NGA: conceptualization, supervision, writing–original draft, writing–review & editing.

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Correspondence to Catarina Costa or Nuno G. Azoia.

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Costa, C., Silva, C., Marques, E.F. et al. A sustainable approach for providing water repellency in textiles by using long-chain cellulose esters. Cellulose 30, 7347–7362 (2023). https://doi.org/10.1007/s10570-023-05311-8

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  • DOI: https://doi.org/10.1007/s10570-023-05311-8

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