Preparation and properties of nano-MgO/HDTMS super hydrophobic multifunctional cotton

Abstract

First, nano-sized magnesium oxide (MgO) particles were prepared with magnesium nitrate hexahydrate as raw material and plant extract Angelica dahurica as a protective agent and dispersant. Then, MgO nano particles (MgO NPs) were loaded on the cotton fabric surface by dipping method. Finally, using hexadecyl trimethoxysilane (HDTMS) as a modifier and ammonia as a catalyst, the cotton fabric was hydrophobically modified to prepare a super hydrophobic multifunctional cotton fabric. FTIR indicated that long carbon chain silane was successfully introduced onto cotton fabric. SEM and XRD analysis showed that the micro-nano rough structure was formed on the MgO/HDTMS/cotton fabric surface, and its crystal structure was unchanged. The water contact angle of cotton fabric modified by MgO/HDTMS reached 153°, which made it super hydrophobic. Moreover, MgO/HDTMS/cotton fabric has excellent antibacterial properties with the antibacterial rates against S. aureus and E. coli of 95.50% and 95.30%, respectively. After 10 times of cyclic washing, both the water contact angle and the antibacterial rate for S. aureus and E. coli of the fabric showed a slight decrease, which indicated that it has good washing durability.

Keywords:

• Nanometer magnesium oxide
• HDTMS
• cotton fabric
• super hydrophobicity
• antibacterial property

Disclosure statement

The authors declare no conflict of interest.

Data availability statement

The data presented in this study are available on request from the corresponding author.

Additional information

Funding

This work was supported by the project of ‘Five Strategies’ of Education Service of Industrial Technology Research Institute of Liaoning Universities; Instituto Federal de Educação, Ciência e Tecnologia do Espírito Santo (No. 2018LY027).