Open coating with natural wax particles enables scalable, non-toxic hydrophobation of cellulose-based textiles

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http://hdl.handle.net/10138/319588

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Forsman , N , Johansson , L-S , Koivula , H , Tuure , M , Kääriäinen , P & Österberg , M 2020 , ' Open coating with natural wax particles enables scalable, non-toxic hydrophobation of cellulose-based textiles ' , Carbohydrate Polymers , vol. 227 , 115363 . https://doi.org/10.1016/j.carbpol.2019.115363

Title: Open coating with natural wax particles enables scalable, non-toxic hydrophobation of cellulose-based textiles
Author: Forsman, Nina; Johansson, Leena-Sisko; Koivula, Hanna; Tuure, Matilda; Kääriäinen, Pirjo; Österberg, Monika
Other contributor: University of Helsinki, Aalto University
University of Helsinki, Food Sciences

Date: 2020-01-01
Language: eng
Number of pages: 9
Belongs to series: Carbohydrate Polymers
ISSN: 0144-8617
DOI: https://doi.org/10.1016/j.carbpol.2019.115363
URI: http://hdl.handle.net/10138/319588
Abstract: Environmental benign cellulosic textiles are hampered by their tendency to absorb water, which restricts their use in functional clothing. Herein we describe a method to functionalize textile surfaces using thin, open coatings based on natural wax particles and natural polymers rendering cellulosic fabrics water-repellent while retaining their feel and breathability. The impact of curing temperature, cationic polymer and fabric properties on wetting and long-term water-repellency were studied using contact angle measurements and scanning electron microscopy. The wetting properties were correlated to roughness of the textiles using white light interferometer. X-ray photoelectron spectroscopy revealed the surface chemical composition, leading to fundamental understanding of the effect of annealing on the wax layer. Breathability was evaluated by water vapor permeability. The optimal curing temperature was 70 °C. The developed coating performed well on different natural textiles, and better than commercial alternatives. A set of garment prototypes were produced using the coating.
Subject: Breathability
CARNAUBA WAX
COTTON
FABRICS
FIBERS
FILMS
Hydrophobic textile
LAYER
Layer-by-layer
Non-toxic
SUPERHYDROPHOBIC COATINGS
Surface roughness
Wax particles
116 Chemical sciences
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