The usual assumption of affine deformation of the strands of a polymeric network appears not to fulfil force balance over the nodes of the network in case such nodes are entanglements. In an effort to improve over the classical theory of Doi and Edwards for entangled polymers, a simple model is here proposed which is so constructed as to obey force balance. Explicit predictions for step strains are here obtained which compare very favourably with data, not only of damping function, but also of normal stress ratio.
Possible Role of Force Balance on Entanglements / G., Marrucci; Greco, Francesco; Ianniruberto, Giovanni. - In: MACROMOLECULAR SYMPOSIA. - ISSN 1022-1360. - STAMPA. - 158:(2000), pp. 57-64. [10.1002/1521-3900(200008)158:1<57::AID-MASY57>3.0.CO;2-7]
Possible Role of Force Balance on Entanglements
GRECO, FRANCESCO;IANNIRUBERTO, GIOVANNI
2000
Abstract
The usual assumption of affine deformation of the strands of a polymeric network appears not to fulfil force balance over the nodes of the network in case such nodes are entanglements. In an effort to improve over the classical theory of Doi and Edwards for entangled polymers, a simple model is here proposed which is so constructed as to obey force balance. Explicit predictions for step strains are here obtained which compare very favourably with data, not only of damping function, but also of normal stress ratio.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
