INVESTIGADORES
SARMORIA Claudia
artículos
Título:
Model linear Ethylene-Butene copolymers Irradiated with g-rays
Autor/es:
ANDREUCETTI, N A; FERNANDEZ LAGOS, L; CURZIO, O A; SARMORIA, C; VALLÉS, E M; SARMORIA, C
Revista:
POLYMER
Editorial:
Elsevier
Referencias:
Lugar: Oxford; Año: 1999 vol. 40 p. 3443 - 3450
ISSN:
0032-3861
Resumen:
Two model linear polyethylenes of different molecular weights and very narrow molecular weight distributions were subject to gamma-ray irradiation under vacuum. Irradiations were conducted at two temperatures: 25 and 135°C. Number average and weight average molecular weight of irradiated samples was measured by LALLS and membrane osmometry, and the distribution of molecular weights was studied by GPC. The presence of a low but measurable amount of scission was verified. A mathematical model of the irradiation process was developed, which gave very good predictions of the measured values.
