Ion beam modification of PES, PS and PVC polymers

Physico-chemical integrity of nanofiltration/reverse osmosis membranes during characterization by Rutherford backscattering spectrometry

“…A comparison of Fig. 1(a) and (b) reveals that the helium irradiation causes the formation of compact islands in the PSf structure, which consistent with the observation by Evelyn et al [1] for irradiated PES, might be indicative of polymer chain cross-linking via sulfone groups. The RBS spectra for PSf samples were characterized by the presence of three distinct signals corresponding to sulfur, oxygen and carbon (Fig.…”

“…However, applications of RBS to the characterization of polymeric materials are relatively sparse, mainly because the relatively high-energy ion beams used can cause irreversible chemical damage/modification to polymers, including chemical bond cleavage (chain scission), creation of double bonds and a cross-linked structure, and emission of gaseous degradation products [1][2][3][4][5][6][7][8].…”

“…Ions entering polymer materials loose energy by interacting with both electrons (i.e., electronic stopping) and nuclei (i.e., nuclear stopping) [1]. As a result they can produce intense terephthalate) (PET) has been shown to decrease at fluences above 4 × 10 14 He + /cm 2 [6].…”

Surface attachment of horseradish peroxidase to nylon modified by plasma‐immersion ion implantation

“…Ion‐beam implantation and PIII have been used for the modification of polyethylene, 13–21 polystyrene, 22–28 polytetrafluoroethylene, 29–34 poly(ethylene terephthalate), 35–38 poly(methyl methacrylate), 39–42 polyurethane, 43–47 and other polymers. Leading to increases in the hardness, electrical conductivity, and wettability, structural changes typical of ion‐irradiated polymers, such as carbonization, depolymerization, and oxidation, have been observed.…”

Response of Cellulose detectors to different doses of 62?MeV protons

“…Chain scission and cross-links as well as the masslosses induced by electronic excitation and ionization are accepted as fundamental events that give rise to the observed macroscopic changes. A lot of work is in progress in the field of electron, gamma, proton and ion irradiation-induced modification in polymers [1][2][3][4]. An extensive study on the effect of proton irradiation on different polymers has been carried out.…”