Title variants
Languages of publication
Abstracts
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.
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
Year
Volume
Issue
Pages
542-544
Physical description
Dates
published
2017-03
Contributors
author
- Rheology Laboratory, Chemical Engineering Department, Faculty of Engineering, Istanbul University, Avcilar Campus, Avcilar 34320, Istanbul, Turkey
author
- Rheology Laboratory, Chemical Engineering Department, Faculty of Engineering, Istanbul University, Avcilar Campus, Avcilar 34320, Istanbul, Turkey
References
- [1] Plastics - the Facts 2014/2015. An analysis of European plastics production, demand and waste data, Associations of Plastics Manufactures, Brussels 2015 http://www.plasticseurope.org/documents/document/20150227150049-final_plastics_the_facts_2014_2015_260215.pdf
- [2] A. Ares, R. Bouza, S.G. Pardo, M.J. Abad, L. Barral, J. Polym. Environment 18, 318 (2010), doi: 10.1007/s10924-010-0208-x
- [3] J.E. Crespo, F. Parres, M.A. Peydró, R. Navarro, Polymer Eng. Sci. 53, 679 (2013), doi: 10.1002/pen.23307
- [4] J. Datta, P. Kopczyńska, Crit. Rev. Env. Sci. Tech. 46, 905 (2016), doi: 10.1080/10643389.2016.1180227
- [5] M. García-Morales, P. Partal, F.J. Navarro, F. Martínez-Boza, C. Gallegos, Polymer Engi. Sci. 47, 181 (2007), doi: 10.1002/pen.20697
- [6] E. Kuram, B. Ozcelik, F. Yilmaz, G. Timur, Z.M. Sahin, Polymer Compos. 35, 2074 (2014), doi: 10.1002/pc.22869
- [7] M.F. Ergin, I. Aydin, Anadolu Univ. J. Sci. Technol.-A Appl. Sci. Eng. 16, 265 (2015), doi: 10.18038/btd-a.10271
- [8] H. Eslami, Understanding Screw Design for Film Extrusion Process, 2014 http://www.macroeng.com/
- [9] P.J. Carreau, Ph.D. Thesis, University of Wisconsin-Madison, USA 1968
- [10] K. Yasuda, R.C. Armstrong, R.E. Cohen, Rheol. Acta 20, 163 (1981)
- [11] J.D. Ferry, Viscoleastic Properties of Polymer, 3rd ed., John Wiley Sons, Chichester 1980, doi: 10.1002/pi.4980130110
- [12] K.H. Su, J.-H. Lin, C.-C. Lin, J. Mater. Proc. Technol. 192-193, 532 (2007), doi: 10.1016/j.jmatprotec.2007.04.056
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv131n356kz