Abstract
The present work aims at investigating the effect of applying different dyeing sequences on the imparted functional properties to partially hydrolysed and bleached PET and PET/CO fabrics loaded with TiO2, ZnO and SnO2 nanoparticles (NPs). The so obtained dyed fabrics have been characterized using SEM, EDX and FT-IR analytical techniques. The obtained results revealed that, an interaction has taken place between COOH groups created on dyed polyester fabrics and each of the applied NPs. Moreover, the effect of loading and sequence of dyeing wet operation on the functional performances of polyester fabrics was evaluated by estimating its antimicrobial efficacy and ultraviolet protection properties. The antimicrobial activity was tested against B. mycoides, E. coli and C. albicans. It has been found that, loading polyester fabrics with TiO2 and ZnO during dyeing process using exhaustion or after dyeing using pad-dry-cure methods paves the way for imparting outstanding antimicrobial activity even after five washing cycles. Moreover, the obtained results have also reviled that, the UPF values are dependent on the sequences of the loading of abovementioed NPs during or after dyeing wet operation.
Highlights
The loaded samples were washed with distilled water to remove NPs that did not attach to the fabrics surfaces
As we have mentioned before, the present study aims at clarification of the effect of wet processing operations on the valuable functional properties of PET fabrics gained after loading it with metal oxide nanoparticles
The effect of the sequences of loading with various types of NPs with dyeing wet process operation on the properties of bleached, partially hydrolysed and dyed polyester fabrics have been carried out as follows: 1. PET→H→B and PET/CO→H→B were separately immersed in TiO2, ZnO and SnO2 NPs emulsion squeezed at 75% pick up increase, dried at 100°C for 60 min and cured at 150°C for 10 min
Summary
Desirable properties.[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] Antimicrobial,[1,2,3,4] UV protection,[5,6,7,8,9,10,11,12] self-cleaning[13,14] and antistatic finish[15] finishing are among these imparted properties Most of these finishing methods depend on the activation of the surface of PET fabrics by creation of functional groups able to react with NPs. PET and PET/CO blended fabrics have been treated by Shalaby et al.[3,11] with TiO2 and ZnO nanoparticles after surface activation of the fabrics by chemical and physical methods. It was found that, such activation facilitated imparting high antimicrobial and UV protection properties to the abovementioned fabrics
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