An investigation on rheological properties of some polyesters prepared for plasticizing poly(vinyl chloride)

✍ Scribed by Abdel-Azim, Abdel-Azim A.; Atta, Aiman M.; Gad, El-Shafie A.; Farahat, Medhat S.

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 273 KB
• Volume: 47
• Category: Article
• ISSN: 0959-8103
• DOI: 10.1002/(sici)1097-0126(199811)47:3<303::aid-pi21>3.0.co;2-0

✦ Synopsis

A series of polyester resins having di †erent structures and molecular weights has been prepared. The molecular weights of the polyesters prepared have been determined via end-group analysis. The rheological properties of the polymers prepared have been studied and the inÑuence of various parameters on these properties elucidated. Di †erent Ñow behaviours of the prepared polyesters such as the Bengham and Casson models of Ñow were tested. It has been found that the polyesters investigated follow a pseudoplastic type of behaviour, in which the viscosity decreases with increasing shear rate.