After extensive rinsing with deionized water to remove the unreacted chemicals, the fabrics were oven-dried at 100◦C for 20min. The treated fabric was then immersed separately into PAH (1.0 wt%) and PAA (1.0 wt%) solutions to form a PAH/PAA bilayer on the fab- ric, after which nanoparticle-containing multilayers (PAH/SiO2 )n (n = 1, 3, 5, 7) were assembled by alternately immersing the treated fabric into PAH (1.0 wt%) solution and a solution containing 1.0 wt% SiO2 nanoparticles. The pH values of PAH and PAA solutions were adjusted with NaOH to about 7.5 and 7, respectively. For each layer, the immersion time was 5 min, followed by washing three times with deionized water. Finally, the treated cotton fabrics were dipped in 2.0 wt% FAS in hexane for 1 h, and subsequently dried at 100◦C for 30min.
After extensive rinsing with deionized water to remove the unreacted chemicals, the fabrics were oven-dried at 100◦C for 20min. The treated fabric was then immersed separately into PAH (1.0 wt%) and PAA (1.0 wt%) solutions to form a PAH/PAA bilayer on the fab- ric, after which nanoparticle-containing multilayers (PAH/SiO2 )n (n = 1, 3, 5, 7) were assembled by alternately immersing the treated fabric into PAH (1.0 wt%) solution and a solution containing 1.0 wt% SiO2 nanoparticles. The pH values of PAH and PAA solutions were adjusted with NaOH to about 7.5 and 7, respectively. For each layer, the immersion time was 5 min, followed by washing three times with deionized water. Finally, the treated cotton fabrics were dipped in 2.0 wt% FAS in hexane for 1 h, and subsequently dried at 100◦C for 30min.
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