Radiation-induced grafting of styrene onto poly(tetrafluoroethylene) (PTFE) films. I. Effect of grafting conditions and properties of the grafted films

Authors
Nasef, MM Saidi, H Dessouki, AM El-Nesr, EM
Citation
Mm. Nasef et al., Radiation-induced grafting of styrene onto poly(tetrafluoroethylene) (PTFE) films. I. Effect of grafting conditions and properties of the grafted films, POLYM INT, 49(4), 2000, pp. 399-406
Citations number
37
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER INTERNATIONAL
ISSN journal
09598103 → ACNP
Volume
49
Issue
4
Year of publication
2000
Pages
399 - 406
Database
ISI
SICI code
0959-8103(200004)49:4<399:RGOSOP>2.0.ZU;2-P
Abstract
Radiation-induced grafting of styrene onto poly(tetrafluoroethylene) (PTFE) films was studied by a simultaneous irradiation technique. Grafting was ca rried out using gamma-radiation from a Co-60 source at dose rates of 1.32-1 5.0 kGyh(-1) at room temperature. The effects of type of diluent, dose rate , irradiation dose, and the initial monomer concentration in the grafting s olution on the degree of grafting were investigated. The degree of grafting was found to be strongly dependent upon the grafting conditions. The depen dence of the initial rate of grafting on the dose rate and the initial mono mer concentration in the grafting solution was found to be in the order of 0.6 and 1.7, respectively. The chemical structure and the crystallinity of the grafted PTFE films were studied by means of Fourier-transform infrared, (FTIR), electron spectroscopy for chemical analysis (ESCA) and X-ray diffr actometry (XRD). (C) 2000 Society of Chemical Industry.