A comparison between torsional and capillary rheometry for polyethylene and polyethylene blends

A comparison between torsional and capillary rheometry for polyethylene and polyethylene blends

Autori: G. Carianni, P. Mariani
Presentato al: Southern Europe Conference on Rheology
Anno: 1999
Volume: 2 - Issue: Unico
Casa Editrice: SIR-Cuen Napoli
Lingua: English

Abstract
It is well known that the steady flow in a capillary rheometer is quite different from oscillatory flow in a torsional rheometer.
However, agreement has been found (1-4) between curves of apparent viscosity vs shear rate and curves of dynamic complex viscosity vs frequency for some relatively flexible polymers, with some exceptions (5, 6).

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XIX Italian Society of Rheology Conference

Bologna, 16th-19th June 2026
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The Italian Society of Rheology (SIR) organizes every two years the Italian Rheology Conference, which is the meeting point of the National and International rheological community to promote knowledge and discuss research in the field of rheology. The Conference consists of keynote lectures, oral communications and posters on topics related to all the thematic areas of rheology. The XIX edition will be held in the conference rooms of Plesso Belmeloro, in the city centre of Bologna, in June 16th-19th, 2026. Book your accommodation in Bologna well in advance, the city is a famous tourist destination and has limited availability of accommodations!

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