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In recent years, graft copolymerization has been widely used to insert   various functional groups onto polymers. In our study, methacrylic acid   monomers are grafted to polypropylene (PP) fibers to make them hydrophilic   while maintaining their mechanical properties. Experiments are designed based   on Taguchi’s method and influence of temperature, monomer concentration;   cross-linker concentration and time of reaction are investigated. Grafting of   methacrylic acid and divinyl benzene is investigated by FTIR spectra and   confirmed by SEM micrographs. Tensile strength and toughness of specimens are   measured and compared with raw fibers. Influence of grafting on the tensile   strength and toughness of fibers are measured and critical grafting degree to   maintain tensile strength and toughness of fibers is defined

Graft copolymerization of methacrylic acid monomers onto polypropylene fibers