Memory Effect and Extrudate Swell

• Published in: Nihon Reoroji Gakkaishi Vol. 18; no. 1; pp. 5 - 11
• Main Author: NAKAJIMA, Nobuyuki
• Format: Journal Article
• Language: English
• Published: The Society of Rheology, Japan 1990
• Subjects: Deformational Memory; Extrudate Swell; Non-linear Viscoelasticity; Stress Relaxation; Transient Behavior

The first part of this paper describes an interpretation of extrudate swell with an emphasis on the following aspects: (1) The material behavior in the entrance zone leading to capillary is in transient and not in steady state. (2) The material behavior is predominantly in elognation and not in shea...