|
|||||
|
|
Structural changes of poly(ethylene isophthalate) subjected to gamma irradiation |
|
| Authors: | G. Consolati N. LottiM. Mariani A. MunariF. Quasso |
| Affiliation: | a Dipartimento di Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milano, Italy b Dipartimento di Chimica Applicata e Scienza dei Materiali, Università di Bologna, Viale Terracini 28, 40131 Bologna, Italy c Dipartimento di Energia, Politecnico di Milano, sede CeSNEF, via Ponzio 34/3, Piazza Leonardo da Vinci 32, 20133 Milano, Italy |
| Abstract: | The results of studies of the physico-chemical changes of a polyester, poly(ethylene isophthalate), subjected to gamma irradiation up to 1 MGy, are reported. Viscometric measurements were carried out to monitor variations of the molecular weight. Changes in the amorphous fraction of the polymer were observed by means of differential scanning calorimetry. Positron annihilation lifetime spectroscopy was used to show possible modifications of the free volume as a consequence of irradiation. The results allow us to conclude that the polymer shows a good resistance to radiation damage. |
| Keywords: | Differential scanning calorimetry Free volume Gamma irradiation Polyester Positron annihilation Viscometry |
| 本文献已被 ScienceDirect 等数据库收录！ | |