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

被引:31
作者
Forsman, Nina [1 ]
Johansson, Leena-Sisko [1 ]
Koivula, Hanna [2 ]
Tuure, Matilda [3 ]
Kaariainen, Pirjo [3 ]
Osterberg, Monika [1 ]
机构
[1] Aalto Univ, Sch Chem Engn, Dept Bioprod & Biosyst, POB 16300, Aalto 00076, Finland
[2] Univ Helsinki, Dept Food & Nutr, POB 66, FI-00014 Helsinki, Finland
[3] Aalto Univ, Sch Arts Design & Architecture, POB 31000, Aalto 00076, Finland
关键词
Wax particles; Hydrophobic textile; Surface roughness; Layer-by-layer; Breathability; Non-toxic; CARNAUBA WAX; SUPERHYDROPHOBIC COATINGS; FABRICS; COTTON; LAYER; FIBERS; FILMS; XPS;
D O I
10.1016/j.carbpol.2019.115363
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
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 degrees 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.
引用
收藏
页数:9
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