Evaluation of Rheological Behaviour upon Recycling of an Ethylene Vinyl Acetate Copolymer by Means of Twin-Screw Extrusion Process

• Authors: M. Fatih Ergin , I. Aydin
• Languages of publication: EN

Abstracts

EN

Recycling of many polymers has gained a spectacular importance mainly because of its environmental and economical benefits. Ethylene vinyl acetate is one of the thermoplastics used directly as a final product and indirectly as an additive within many other polymeric materials. There has been limited research work on recycling of polymers even though recycling in industry has shown a spectacular growth in the last decade. It is the aim of this study to investigate and to evaluate the rheological behaviour of an ethylene-vinyl acetate copolymer resin upon recycling. For this purpose, original ethylene vinyl acetate granules were processed five cycles by using a twin-screw extruder and their rheological analysis was performed by means of an AR-G2 rheometer (TA Instruments), with a parallel-plate geometry, under a steady state condition. It was found that the rheological measurements of copolymer ethylene vinyl acetate exhibited a shear thinning constitutive behavior, obeying Carreau-Yasuda rheological constitutive model. The changes in flow and oscillatory shear measurements under different processing conditions were also determined in detail and results are reported in the paper.

Keywords

EN

47.85.md; 83.80.Sg; 47.57.Ng; 83.80.-k; 81.20.Hy

Discipline

• 83.80.Sg: Polymer melts
• 47.57.Ng: Polymers and polymer solutions
• 81.20.Hy: Forming; molding, extrusion, etc.[see also, 83.50.Uv Material processing (extension, molding, etc.)]
• 83.80.-k: Material type(see also 82.70.-y Disperse systems; complex fluids and 82.35.-x Polymers: properties; reactions; polymerization in physical chemistry and chemical physics)
• 47.85.md: Polymer processing flows

• Journal: Acta Physica Polonica A
• Year: 2017
• Volume: 131
• Issue: 3
• Pages: 542-544

Dates

published

2017-03

Contributors

author

M. Fatih Ergin

• Rheology Laboratory, Chemical Engineering Department, Faculty of Engineering, Istanbul University, Avcilar Campus, Avcilar 34320, Istanbul, Turkey

author

I. Aydin

• Rheology Laboratory, Chemical Engineering Department, Faculty of Engineering, Istanbul University, Avcilar Campus, Avcilar 34320, Istanbul, Turkey

References

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Identifiers

DOI

10.12693/APhysPolA.131.542