An investigation of the viscoelastic properties of molten polypropylene |
| |
| Authors: | S Ottani G Pezzin C Castellari |
| |
| Institution: | (1) Centro di Studio per la Fisica delle Macromolecole del C. N. R., Via Selmi 2, I-40126 Bologna, Italy;(2) Dipartimento di Chimica-Fisica, Universitá di Padova, Via Loredan, I-35100 Padova, Italy;(3) Dipartimento di Chimica  G. Ciamician , Universitá di Bologna, Via Selmi 2, I-40126 Bologna, Italy |
| |
| Abstract: | Two series of polypropylene samples of different molecular weight, the first obtained directly from polymerization reactions and the second from controlled thermal degradation, were studied by dynamic testing in the melt state. Several viscoelastic parameters were determined, and correlated with weight-average molecular weightM
w
. It is found that theM
w
-dependence of the two series is rather different. |
| |
| Keywords: | Polypropylene viscoelasticity molecular weight molecular-weightdistribution |
| 本文献已被 SpringerLink 等数据库收录！ |
|
