Irradiation crosslinking of unplasticized polyvinyl chloride in the presence of additives

Citation
Ct. Ratnam et al., Irradiation crosslinking of unplasticized polyvinyl chloride in the presence of additives, POLYM TEST, 20(5), 2001, pp. 485-490
Citations number
34
Categorie Soggetti
Material Science & Engineering
Journal title
POLYMER TESTING
ISSN journal
01429418 → ACNP
Volume
20
Issue
5
Year of publication
2001
Pages
485 - 490
Database
ISI
SICI code
0142-9418(2001)20:5<485:ICOUPC>2.0.ZU;2-S
Abstract
Electron beam initiated crosslinking of unplasticized polyvinyl chloride, U PVC, has been carried out over a range of irradiation doses (20-200 kGy). T he effects of trimethylolpropane triacrylate (TMPTA) and Irganox 1010 on th e rate of crosslinking were also studied. Changes in gel fraction, hardness , tensile strength and damping properties upon irradiation were investigate d. Results revealed that under the irradiation conditions employed, the sta bilized UPVC are crosslinked by the electron beam. Addition of 4 phr TMPTA was found to be effective in increasing the rate while Irganox 1010 inhibit s crosslinking. A considerable increase in glass transition temperature upo n irradiation of UPVC in the presence of TMPTA was noted. Further, within t he dose range studied, the degradation caused by electron beam irradiation was found to be minimal. (C) 2001 Elsevier Science Ltd. All rights reserved .