Effect of physical ageing on the viscoelasticity of interpenetrating polymer networks

Authors
Lipatov, YS Rosovitsky, VF Alekseeva, TT Babkina, NV
Citation
Ys. Lipatov et al., Effect of physical ageing on the viscoelasticity of interpenetrating polymer networks, POLYM INT, 49(4), 2000, pp. 334-336
Citations number
18
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER INTERNATIONAL
ISSN journal
09598103 → ACNP
Volume
49
Issue
4
Year of publication
2000
Pages
334 - 336
Database
ISI
SICI code
0959-8103(200004)49:4<334:EOPAOT>2.0.ZU;2-4
Abstract
The effect of physical ageing on viscoelastic properties was studied for se mi-IPNs based on crosslinked polyurethane and poly(butyl methacrylate) take n in the ratio 75/25 by mass. The viscoelastic properties of IPNs were stud ied after physical ageing and after heat treatment at 60 degrees C. Signifi cant changes in viscoelastic behaviour after ageing were observed. It was f ound that heterogeneous systems such as IPNs have their own specific featur es of physical ageing which are related to the existence of two glass trans ition to temperatures. Relaxation processes to establish the equilibrium st ate may need a long period of time. (C) 2000 Society of Chemical Industry.