Super-hydrophobic textile fabric functionalized Organophilic cellulose nanocrystals

G.ACHAGRI1, A.EL IDRISSI1,2 , Y.ESSAMLALI2, A. CHAKIR1, M. ZAHOUILY1,2* 1 Laboratory of Materials, Catalysis & Valorization of Natural Resources, Faculty of Sciences and Techniques Mohammedia, University Hassan II, Casablanca, Morocco.

2 MAScIR Foundation, INANOTECH, VARENA Center, Rabat Design, Rue Mohamed El Jazouli, Madinat El Irfane 10100-Rabat, Morocco *Corresponding author e-mail: mzahouily@gmail.com

Polyethylene terephthalate (PET) has been widely used as a basic material in fabrics for a wide range of applications owing to its excellent physicochemical and mechanical properties. However, PET fabrics always suffer from several issues mainly related to bad surface wettability and poor antimicrobial activity. Therefore, developing simple techniques for imparting multifunctional properties is of a great interest for diverse practical applications. Herein, we present a facile, scalable and cost-effective route to prepare multifunctional PET fabric coated by organophilic cellulose nanocrystals using a simple dip coating method.. The surface morphology and structure of the coated PET fabric (PET-NCC-ODA) were investigated using scanning electron microscopy. The wettability of the uncoated and coated PET fabrics was characterized by contact angle measurements. In comparison with pristine PET fabric, the coated PET fabrics exhibited improved hydrophobic behavior with water contact angle of 153° for PET-NCC-ODA°. In addition, the PET-NCC-ODA fabric demonstrates excellent thermal and mechanical properties.

Abstract

Introduction Over the past decades, flexible and lightweight materials such as films, papers and fabrics

have aroused great attentions, and have presented themselves as potential alternatives to rigid substrates in many applications [1–4]. Among these structures, textile fabrics have been considered as promising substrates for numerous applications, since they are biodegradable, inexpensive and versatile materials. However, their surface hydrophilicity and porous structures provide ideal media for the growth of microorganisms, which limited their applications. Recently, many research attempts have been devoted to the development of hydrophobic and antibacterial textile fabrics. Especially, hydrophobicity in textiles is highly desired owing to its significant role in water repellence, water disinfection and self-cleaning properties [5]. In our previous study, we have successfully prepared knit PET fabrics coated with organophilic graphene oxide, using a simple and cost-effective dip-coating method to produce multifunctional knit PET fabrics [6]. As part of our research program aiming at the development of multifunctional modified textile fabrics, the present study has been conducted to study more on multifunctional properties that can the NCC-ODA nanocomposite confer to the PET fabric. More precisely, the present work aims to confer multifunctionalities, and hydrophobic properties, on PET fabrics using a versatile approach. The surface morphology, chemical structure, wettability, thermal stability, and mechanical properties of the treated fabrics were investigated.

Methodology

dip-coating CNC-ODA

Resultats

4500 4000 3500 3000 2500 2000 1500 1000

A

vierge

109012451712

1014

1460 963

1%

33452923

2856

292333452856

29232856

3345

3%

5%

FTIR of a) CNC,ODA,CNC-ODA b)PES samples of the samples 0%,1%,3%,5%

An easy and efficient approach to incorporate organophilic cellulose nanocrystals into polyester fabrics was reported. The prepared fabrics demonstrate excellent mechanical properties including high tensile strength and elongation at break as well as excellent thermal proprieties. Interestingly, the coated fabrics displayed excellent hydrophobicity as compared to the uncoated one Moreover, polyester coated cellulose nanocrystals show excellent flexibility, stretchability and. The approach adopted in this study opens a novel way pertaining to the fabrication of highly flexible fabrics that could serve as electrodes in supercapacitors, solar cells and sensors.

SEM images for the surface of the samples: 0% (a), 1% (b), 3% (c) and 5% (d)

0 50 100 150 200 250 300 350-20

0

20

40

60

80

100

120

140

160

Con

tact

ang

le (d

eg)

Time (s)

PES PES/NCC-ODA (1%) PES/NCC-ODA (3%) PES/NCC-ODA (5%) 0

20

40

60

80

100

120

140

160

Table : contact angles of PES, PES/NCC-ODA1%,3% and PES/OGN 5% at t0s and t6min

Removal of oil (bleu color) from water using NCC-ODAcoated sample

Conclusion

Referances [1] M. Aqlil, A. Moussemba Nzenguet, Y. Essamlali, A. Snik, M. Larzek, M. Zahouily, Graphene Oxide Filled Lignin/Starch Polymer Bionanocomposite: Structural, Physical, and Mechanical Studies, J. Agric. Food Chem. 65 (2017) 10571–10581. [2] M. Majdoub, Y. Essamlali, O. Amadine, I. Ganetri, et M. Zahouily, « Organophilic graphene nanosheets as a promising nanofiller for bio-based polyurethane nanocomposites: investigation of the thermal, barrier and mechanical properties », New J. Chem., vol. 43, no 39, p. 15659‑15672, oct. 2019, doi: 10.1039/C9NJ03300A. [3] OUADIL, O. CHERKAOUI, M. SAFI, M. ZAHOUILY*,Surface modification of knit polyester fabric for mechanical, electrical and UV-protection properties by coating with graphene oxide, graphene and graphene /silver nanocomposites, Applied Surface Science 414 (2017) 292–302. [4] B. Ouadil, O. Cherkaoui, M. Safi, O. Amadine, R. Ait Mhand; Y. Essamlali, M. Zahouily*, A new route for the preparation of hydrophobic and antibacterial textiles fabrics using Ag-loaded graphene nanocomposite, Colloids and Surfaces A: Physicochemical and Engineering Aspects 579 (2019), 123713 [5] X. Zhu, Z. Zhang, Y. Song, J. Yan, Y. Wang, G. Ren, A waterproofing textile with robust superhydrophobicity in either air or oil surroundings, Journal of the Taiwan Institute of Chemical Engineers. 71 (2017) 421–425. [6] G. Achagri, Y. Essamlali, O. Amadine, M. Majdoub, A. Chakir, et M. Zahouily, « Surface modification of highly hydrophobic polyester fabric coated with octadecylamine-functionalized graphene nanosheets », RSC Adv., vol. 10, no 42, p. 24941‑24950, 2020, doi: 10.1039/D0RA02655G.

International Congress of Industry Environment and Health

CNC-ODA solution

PES/CNC-ODA

CNC-ODA solution

CNC solution

pristine

Pristine fabric Treated fabric