Influence of crosslinker structure on performance of functionalised organic-inorganic hybrid sol-gel coating

17th World Textile Conference AUTEX 2017 - Shaping the Future of Textiles

Vasiljevi, J.^1 ; Zorko, M.^2 ; Štular, D.^1 ; Tomi, B.^1 ; Jerman, I.^2 ; Orel, B.^2 ; Medved, J.^1 ; Simoni, B.^1

University of Ljubljana, Faculty of Natural Sciences and Engineering, Akereva 12, Ljubljana

1000, Slovenia^1

National Institute of Chemistry, Hajdrihova 19, Ljubljana

1000, Slovenia^2

关键词: Ammonium chloride;    Cellulose fibres;    Functional properties;    Organic-inorganic hybrid sol-gel coatings;    Pad-dry-cure process;    Sol-gel coatings;    Static contact angle;    Washing fastness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/254/12/122013/pdf
DOI  :  10.1088/1757-899X/254/12/122013

来源: IOP

【 摘 要 】

This research aimed to investigate the influence of the co-condensation of the three different organofunctional trialkoxysilane precursors with two different crosslinkers, i.e. tetraethoxysilane or organocyclotetrasiloxane on the performance and the washing fastness of this multicomponent multifunctional sol-gel coating on cellulose fibres. To this aim, a three-component equimolar sol mixture (MC), which included 1H,1H,2H,2H-perfluorooctyltriethoxysilane (SiF), 3-(trimethoxysilyl)-propyldimethyloctadecyl ammonium chloride (SiQ) and P,P-diphenyl-N-(3-(trimethoxysilyl)propyl) phosphinic amide (SiP) in combination with two different concentrations of TEOS (T and 3T) or organocyclotetrasiloxane 2,4,6,8-tetrakis(2-(diethoxy(methyl)silyl)ethyl)-2,4,6,8-tetramethyl-cyclotetrasiloxane (T4) as crosslinkers, was applied to the cotton fibres by a pad-dry-cure process. The functional properties of the coated samples before and after repeated washing were investigated by the water θ (W) and n-hexadecane θ (C16) static contact angle as well as water sliding (roll-off) (α) angle measurements. The inclusion of both TEOS and T4into the MC sol increased the hydrophobic affect and simultaneously decreased the oleophobic effect of the MC coating. These phenomena were more pronounced for higher concentration of TEOS and T4crosslinker. The inclusion of T4into the MC sol improved the coating washing fastness to a significantly higher extent than the inclusion of TEOS, with respect to the applied concentrations.