Plant-based, aqueous, water-repellent sprays for coating textiles

Area of Science:

• Materials Science
• Sustainable Chemistry

Background:

• Traditional water-repellent coatings often rely on petroleum-based chemicals, raising environmental concerns.
• There is a growing demand for eco-friendly alternatives in the surface coating industry.

Purpose of the Study:

• To develop novel superhydrophobic coatings using biodegradable and biosourced plant waxes.
• To evaluate the efficacy and application of these coatings on different textile types.

Main Methods:

• Plant waxes were isolated via solvent extraction and characterized (DSC, GC-MS, DLS).
• Wax-solvent solutions and aqueous dispersions were prepared and applied to filter paper and textiles (cotton, polyester).
• Coating morphology was analyzed using Scanning Electron Microscopy (SEM), and superhydrophobicity was confirmed via contact angle measurements.

Main Results:

• Superhydrophobic coatings were successfully prepared from plant waxes.
• The coatings demonstrated excellent water-repellent properties on both cotton and polyester textiles.
• SEM confirmed the desired coating morphology, and contact angle measurements indicated superhydrophobicity.

Conclusions:

• Biodegradable and biosourced plant waxes can create high-performing, petroleum-free superhydrophobic coatings.
• These novel coatings are effective on textiles with varying polarities and require less material than commercial alternatives.
• This research presents a sustainable approach to water-repellent textile finishing.