Abstract
Graft polymerization has been considered as a general method for the modification of the physical and chemical properties of polymeric materials and of particular interest for synthesis of the hydrophilic membrane. In this study, hydrophilic carboxylic acid groups were introduced by radiation-induced grafting of acrylic acid (AAc) onto non-woven polypropylene fabric (NWPP). Different irradiation doses and (AAc) monomer concentrations were used to optimize grafting yield. Characterization and properties of the prepared graft copolymer were studied by employing X-ray Dif-fraction (XRD), Thermogravimetric Analysis (TGA), Scanning Electron Microscope (SEM ), Fourier Transform Infrared Spectrometry (FTIR) and differential scanning calorimeter (DSC). The prepared grafted materials were used for removing some heavy metals ions. The results showed that the non-woven PP grafted with (AAc) has good affinity toward Cu, Ni and Co.
Highlights
Water contamination with toxic metals causes serious human health problems
Characterization and properties of the prepared graft copolymer were studied by employing X-ray Diffraction (XRD), Thermogravimetric Analysis (TGA), Scanning Electron Microscope (SEM ), Fourier Transform Infrared Spectrometry (FTIR) and differential scanning calorimeter (DSC)
The radiation grafting process of aqueous acrylic acid (AAc) is usually accompanied by undesirable homopolymerization
Summary
Water contamination with toxic metals causes serious human health problems. Enhanced metal separation techniques that require less energy with minimal impact on the environment are desirable. Radiation-induced graft polymerization is widely used to produce high performance chemically active polymer materials for adsorption and separation processes on the basis of various commercial polymers available in different forms (films, fibers, resins, textiles, powders) [2,3].Various approaches for synthesizing polymer adsorbents have been developed, including direct graft polymerization of vinyl monomers already containing desirable functional groups. The advantages of using nonwoven polypropylene NWPP as matrix are their relatively low processing temperature which is essential because of low thermal stability of natural fibers and their good properties and lower cost For these increasing applications it is desirable to produce such nonwoven materials with well defined surface properties. The application of the prepared NWPP-AAc as adsorbent materials for waste water treatment from heavy and toxic metals is investigated
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