2. Materials and methods
2.1. Materials
The plain weave 100% super bright nylon 66 fabric was used
with the wrap density of 42 yarn/cm, the weft density of 24 yarn/
cm and the fabric weight of 168 g/m2
. Nano-titanium dioxide
powder (Degussa P-25) with average particle size of about 21 nm
from Evonik, nanopowder of strontium titanate from Aldrich
(517011) with average particle size of less than 100 nm and nanoZnO
(S830CD-HOUSTON-color USA) with particle size of less than
100 nm were employed. Super bright nylon chips from Aldrich
(N66 74712) and formic acid (CH2O2) as chips solution from Merck
Company were prepared. Commercially available Direct Green 6
(Fig. 1) was obtained.