Investigating the effect of various blend ratios of prepared masterbatch containing Ag/TiO2 nanocomposite on the properties of bioactive continuous filament yarns

Abstract

In this research, possibility of producing and processing antibacterial organic/inorganic nanocomposite polypropylene filament yarns for permanent antimicrobial efficiency has been investigated. First PP powder and inorganic nanocomposite filler were mixed in a twin screw extruder and modified masterbatch was produced. Continuous filament yarn was made by a pilot plant melt spinning machine from the blend of PP granule and various blending contents of the prepared masterbatch. Pure PP and all other combined samples showed acceptable spinnability at the spinning temperature of 240 o C and take-up speed of 2000 m/min. After producing as-spun filament yarns, samples were drawn, textured and finally weft knitted. Physical and structural properties of as-spun and drawn yarns with constant and variable draw ratios were investigated and also tensile and crimp properties of textured yarns were evaluated. Moreover, the DSC, SEM, FTIR techniques have been used for characterization of samples. Finally antibacterial efficiency of knitted samples was evaluated. The experimental results indicated that the maximum crystallinity reduction of modified drawn yarns has reached to 5 %. The observed improvement in the tensile properties of modified as-spun yarns compared to the pure PP was significant. Drawing process improved generally the tensile properties of as-spun yarns. Tensile properties of modified textured and drawn yarns were higher than the pure PP. An optimum of antibacterial activity has been observed in the sample containing 0.75 wt% of nanofiller. It is interesting that the optimum of tensile properties has been also obtained for the sample with maximum bioactivity.

A review on the application of inorganic nano-structured materials in the modification of textiles: Focus on anti-microbial properties

“…The rutile is thermodynamically more stable than the anatase and brookite. At high temperature, the anatase and brookite are Increasing the available nano-silver particles via surface coating of nanosilver on titanium dioxide [101,102].…”

Surface Modification of nTiO2/Ag Hybrid Nanoparticles Using Microwave-Assisted Polymerization in the Presence of Bis(2-hydroxyethyl) Terephthalate

“…However, NPs can be incorporated into polymer matrix leading to a new generation of antimicrobial agents with potential use in areas such as medicine, food packaging, and textile fibers. In this context, Dastjerdi et al [9] obtained filament yarns based on polypropylene (PP)/(nTiO 2 /Ag), in order to evaluate the antimicrobial activity by varying the concentration from 0.2 to 1 wt-% of NPs. These authors found that 0.75 wt-% of NPs is the optimal bactericidal content and increasing the content 2 Journal of Nanomaterials up to 1 wt-% of NPs they observed a significant reduction in the antimicrobial activity because of the NPs agglomeration.…”

Durable antibacterial and UV protective properties of cellulose fabric functionalized with Ag/TiO2 nanocomposite during dyeing with reactive dyes

“…For treating textiles, there are several different forms of nanosilver in use, e.g., metallic silver nanoparticles (Ag NP) , silver chloride particles (AgCl NP) (Tomšič et al 2009) and silver-titanium dioxide composite nanoparticles (Ag/TiO 2 NC) Yuranova et al 2006). In the case of antimicrobial efficiency, the surface coating of nanosilver on titanium dioxide maximizes the number of particles per unit area in comparison with the use of an equal mass fraction of pure silver (Dastjerdi et al 2008;Rimai et al 2000). TiO 2 nanoparticles activated by UV radiation have excellent photoactivity, high stability and antimicrobial properties, furthermore the incorporation of TiO 2 into textiles increases the UV protection factor of textiles (Montazer and Seifollahzadeh 2011;Sundaresan et al 2012;Ugur et al 2011).…”