In situ synthesis of silver nanoparticles on silk fabric with PNP for antibacterial finishing

Abstract

This research presents a generic strategy to fabricate antibacterial textile through in situ synthesis of silver nanoparticles on the fabric with smart polymeric molecules. Silk fabric and polyamide network polymer (PNP) were chosen for this study. PNP which has numerous amino groups and three-dimensional structure was applied to entrap silver ions into silk fabric. The pretreated silk fabrics were heated by steam method to make silver nanoparticles synthesized in situ on them without any other reductant and linker to provide silk fabric with antibacterial properties. The results indicated that the treated silk fabrics had excellent antibacterial activity and laundering durability. The quantitative bacterial tests showed the bacterial reduction rates of Staphylococcus aureus and Escherichia coli were able to reach above 99 % with not more than 0.05 mmol/L of AgNO 3 . The whiteness of silk fabric only changed from 90.47 to 86.49. The antibacterial activity of the treated silk fabric was maintained at 98.86 % reduction even after being exposed to 30 consecutive home laundering conditions. In addition, the results of scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy confirmed that silver nanoparticles had generated and dispersed well in Ag 0 form on the surface of silk fibers. The understanding acquired from this work will allow one to work with the preparation of other silver nanoparticles functional textiles with excellent antibacterial activities and laundering durability through this facile, eco-friendly in situ synthesis method.

Silver speciation and release in commercial antimicrobial textiles as influenced by washing

“…Comprehensive investigations of functionalised textiles in the scientific literature have shown that textiles can be functionalised with well-defined NPs under laboratory conditions (Zhang et al, 2012;Nguyen Khanh et al, 2013). However, it is reasonable to assume that upscaling of functionalization methodologies to the industrial level may result in different outcomes from those achievable under well-controlled laboratory conditions.…”

Synthesis of ZnO nanoparticles by PNP and its application on the functional finishing of cotton fabrics

“…PNP was prepared as described in our previous paper [20]. Woven, bleached, and scoured cotton fabric (58×30 number of yarns per cm 2 , 120 g·m -2 ) was obtained from the Huafang Group (China).…”

“…During heating process, the formed will transform into ZnO nuclei and generate ZnO NPs with the as growth unit [24]. Due to the special structure of PNP, which has interior sealed-in polymeric nanocages [20], it can confine the growth of ZnO NPs and protect them. Therefore, the size of ZnO NPs could be controlled and the prepared ZnO NPs/PNP hybrid exhibited good stability in aqueous solution.…”

“…In our previous study, an amino-terminated hyperbranched polymer (HBP-NH 2 ) was synthesized and used as the auxiliary for salt-free dyeing of cotton fabric [19]. In order to perfect the synthesis of NPs controlled by HBP-NH 2 , a modified hyperbranched polymer (polyamide network polymer, PNP) was synthesized, which could prepared smaller silver NPs than HBP-NH 2 [20].…”

UV Protection and Antibacterial Treatment of Wool using Green Silver Nanoparticles

“…AHSAN HABIB 1,4 , MST. ZAKIA SULTANA 1,5 and HUI-HONG LIU been withdrawn to modify surface of cellulose and protein fibers by incorporating metal and metal assisted nanoparticles (NPs) due to perform some multifunctional attributes such as antibacterial, UV protection, antistatic and self-cleaning [5,6]. Among the metallic nanoparticles, AgNP has nanosize between 1 nm and 100 nm and consider one of the best candidates for several applications including biosensing, microbial activities, drug delivery, catalysis, electrochemical, conductivity, etc.…”