Aalto University School of Chemical Engineering, Department of Bioproducts and Biosystems, P.O. Box 16300, 00076 Aalto, Finland.
University of Helsinki, Department of Food and Nutrition, P.O. Box 66, FI-00014 Helsingin Yliopisto, Finland.
Carbohydr Polym. 2020 Jan 1;227:115363. doi: 10.1016/j.carbpol.2019.115363. Epub 2019 Sep 25.
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.
环境友好型纤维素纺织品因其吸水性而受到阻碍，这限制了它们在功能性服装中的应用。在此，我们描述了一种使用天然蜡颗粒和天然聚合物制成的薄而开放的涂层来对纺织品表面进行功能化的方法，使纤维素织物具有拒水性，同时保留其手感和透气性。使用接触角测量和扫描电子显微镜研究了固化温度、阳离子聚合物和织物性能对润湿和长期拒水性的影响。通过白光干涉仪将润湿性与纺织品的粗糙度相关联。X 射线光电子能谱揭示了表面化学成分，从而深入了解了退火对蜡层的影响。水蒸气透过率评估了透气性。最佳固化温度为 70°C。所开发的涂层在不同的天然纺织品上表现良好，优于商业替代品。使用该涂层制作了一系列服装原型。
