Keratin/alginate hybrid hydrogels filled with halloysite clay nanotubes for protective treatment of human hair

Keratin/alginate hydrogels filled with halloysite nanotubes (HNTs) have been tested for the protective coating of human hair. Preliminary studies have been conducted on the aqueous colloidal systems and the corresponding hydrogels obtained by using Ca2+ ions as crosslinkers. Firstly, we have investigated the colloidal properties of keratin/alginate/HNTs dispersions to explore the specific interactions occurring between the biomacromolecules and the nanotubes. Then, the rheological properties of the hydrogels have been studied highlighting that the keratin/alginate interactions and the subsequent addition of HNTs facilitate the biopolymer crosslinking. Finally, human hair samples have been treated with the hydrogel systems by the dipping procedure. The protection efficiency of the hydrogels has been evaluated by studying the tensile properties of hair fibers exposed to UV irradiation. In conclusion, keratin/alginate hydrogel filled with halloysite represents a promising formulation for hair protective treatments due to the peculiar structural and rheological characteristics.

Automated summary

The application of keratin/alginate hydrogel filled with halloysite nanotubes as a protective coating for hair was investigated. The specific interactions between biomacromolecules and nanotubes were explored through studying colloidal properties and rheological characteristics. The addition of halloysite nanotubes facilitated the crosslinking of the biopolymer. The protective efficiency of the hydrogel was evaluated by studying the tensile properties of hair fibers exposed to UV irradiation. The results showed that the hydrogel filled with halloysite nanotubes effectively protected the hair.