Characterization for graft polymerization of alkyl methacrylate onto polydimethylsiloxane membranes by electron beam and their permselectivity for volatile organic compounds

Improving the hydrophobicity/oleophobicity of polyethylene terephthalate fibrous materials using electron beam‐induced graft polymerization with 2‐(perfluorohexyl)ethyl acrylate monomer and alkyl acrylate monomer

“…35 Several reports suggest that radiation graft polymerization occurs on the PET fabric side (grafting) and in the monomer solution (homopolymerization and copolymerization). 26,36,37 Weight gain was calculated by the following equation and used as the graft degree 25,38 :…”

“…An affinity between the substrate and fluorinated polymer is required. 25 Graft polymerization is a rational method to combine polymer materials with different chemical and physical properties. 25,26 The graft chains are bonded to the substrate; therefore, the graft polymerization method is more stable to temperature, washing, and physical friction than chemical impregnation or coating such as the padding process.…”

“…25 Graft polymerization is a rational method to combine polymer materials with different chemical and physical properties. 25,26 The graft chains are bonded to the substrate; therefore, the graft polymerization method is more stable to temperature, washing, and physical friction than chemical impregnation or coating such as the padding process. 27,28 Graft polymerization can be achieved by ionizing radiation, gamma rays, electron beam (EB) irradiation, ultraviolet light, and plasma irradiation.…”

“…27,28 Graft polymerization can be achieved by ionizing radiation, gamma rays, electron beam (EB) irradiation, ultraviolet light, and plasma irradiation. 25,26,[29][30][31] EB has high energy does not require additives to form radicals, such as initiators in polymerization, enabling efficient graft polymerization. 25,32,33 Strong immobilization by covalent bonding of the monomers to the substrate can be achieved by functional groups of the vinyl monomer reacting with the radicals generated by the EB.…”

“…In the simultaneous EB graft polymerization method, the monomer and substrate are irradiated simultaneously or pre-irradiated, where the substrate is irradiated first and then grafted after irradiation. 24,25,35 The pre-irradiation and simultaneous irradiation methods were compared by evaluating the graft ratio, which was determined using weight change of the PET fabrics before and after EB graft polymerization. Water and oil repellency were evaluated by measuring the contact angles.…”