Abstract
To obtain the safety of drinking water, an antibacterial material was prepared by loading silver (Ag) onto fibrous iminodiacetate (IDA) adsorbent, which was synthesized by radiation-induced graft polymerization of glycidyl methacrylate and subsequent chemical modification of the produced epoxy group to an IDA group (IDA-Ag). A total amount of loaded Ag on the IDA-Ag fabric was 0.4 mmol-Ag/g-fabric. From an observation of the IDA-Ag fabric cross section by a scanning electron microscope energy dispersive X-ray spectrometer, Ag was distributed to IDA layer uniformly. As a result of evaluating antibacterial effects by the column mode water flow test with stream water, the effective Ag concentration was monitored 0.05 ppm at irrespective flow rate which was functioned to the antibacterial performance. The antibacterial effects for general bacteria were indicated until BV (BV: steam water volume/IDA-Ag fabric volume) 6000, and for colitis germ legions were completely disinfected until BV 6000.
Highlights
The general bacteria and colitis germ legions could be contaminated from natural water resources
The antibacterial material was developed by Radiation-induced graft polymerization (RIGP) to prevent the proliferation of bacteria on Cs adsorbent which has been developed to decontaminate disaster regions
In the process of loading Ag on IDA-Na adsorbent (IDA-ad), 0.4 mmol-Ag/g-fabric could be loaded in 1 mmol/L of Ag solutions, and Ag amount was stable at pH ranging from 5 to 9 including the drinking water standard
Summary
The general bacteria and colitis germ legions could be contaminated from natural water resources . (2015) Evaluation of Antibacterial Effect by Using a Fibrous Grafted Material Loaded Ag Ligand. Antibacterial effects of metal ions are well known for a long time, mechanisms are not clarified yet [7]. Metal ions such as titanium [8]-[11], copper [6] [9] [10], zinc [6], and silver (Ag) [6]-[9] [12]-[15] were investigated for developing antibacterial materials. An antibacterial material with loading Ag was synthesized by RIGP of glycidyl methacrylate (GMA) onto a polyethylene nonwoven fabric (NF) and subsequent chemical modification with IDA. The continuous antibacterial evaluation was investigated for the resultant IDA-Ag fabric with the stream water
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