Abstract
The aim of this study is to prepare a polypropylene nonwoven with the ability to adsorb both anionic and cationic compounds from aqueous media. Polypropylene nonwoven was activated with oxygen plasma and acrylic acid was grafted on it. Then, poly(propylene imine) dendrimer was grafted on it by a pad-dry-cure process. The effect of three parameters on the dendrimer grafting yield was studied and the process was optimized using response surface methodology. The prepared samples were analyzed using ATR-FTIR, FESEM, EDS, AFM, and XPS. The results of different analyses confirmed the grafting of acrylic acid and dendrimer on the surface of the polypropylene nonwoven. The XPS results showed that the sample prepared under the optimal conditions contains both amine and carboxylic acid groups which enables it to interact with various compounds. The ability of acrylic acid grafted and dendrimer grafted samples for removal of model anionic and cationic dyes was studied. The dendrimer grafted sample removed more than 70% and 99% of cationic and anionic dyes from water, respectively.
Published Version
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