Synthesis of castor oil/2,4-toluene diisocyanate adduct

Scientists recently synthesised castor oil/2,4-toluene diisocyanate adduct to impart water repellency and antibacterial properties for cotton/polyester fabric.

Opened cotton boll with white cotton.
The emulsion synthesised in the study is suitable both as a water-repellent and as an antibacterial finish for cotton/polyester fabric. Source: silencefoto – -

A new CAO/TDI adduct was synthesised by reacting 2,4-toluene diisocyanate (TDI) with castor oil (CAO) in a molar ratio of 70%, respectively, at 100°C for 90 min. The chemical structure of the synthesised adduct was confirmed by FTIR analysis. Furthermore, such adduct was emulsified in water using stearic acid/triethanol amine system.

Water-repellent and antibacterial surface

Moreover, the emulsion was examined as a water-repellent as well as an antibacterial finish for cotton/polyester fabric. The results indicated that the emulsion treated fabric acquires water repellency, softness, stiffness, and antibacterial properties. In addition, the surface of the aforementioned treated fabric was characterised via scanning electron microscopy.

The study is published in: Journal of Coatings Technology and Research  January 2019, Volume 16, Issue 1, pp 31–39.

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