New membranes obtained by grafting implanted PVDF foils

R. MAZZEI; G. GARCÍA BERMÚDEZ; C. ARBEITMAN; V. C. CHAPPA; M. F. DEL GROSSO; M. BEHAR

Padova, Italia

Conferencia; Radiation effects on insulators (REI 2009); 2009

Universidad de Padova

This work describes a new method to produce a thin layer of polyAcrylic-acid (membranes) that grows on the surface of PVDF foils implanted by an Ar beam with energies between 30 and 150 keV. Different combinations of monomers in water solutions were used such as: acrylic acid (AAc); acrylic acid-glycidyl methacrylate (AAC-GMA); acrylic acidstyrene(AAc-S) and acrylic acid-Nisopropyl acrylamide (AAc-NIPAAm). Then the grafting induced on the implanted PVDF surface was analyzed . The experimental results showed that a huge percentage of grafting was obtained for a particular value of ion fluence and energy, AAc concentration, sulfuric acid and PVDF phase (alpha or beta).Furthermore, at certain point of the grafting process the development of the PolyAAc produced a detachment from the irradiated substrate and continued its grafting outside the irradiated substrate. This method produces a membrane that is an increased replica of the original implanted surface