Computational modelling of the separation of molten polymer blends by a centrifugal technique
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In: Journal of polymer research, Vol. 30.2023, No. 8, 308, 17.07.2023.
Research output: Contribution to journal › Article › Research › peer-review
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TY - JOUR
T1 - Computational modelling of the separation of molten polymer blends by a centrifugal technique
AU - Medvid, V.
AU - Steiner, Hermann
AU - Irrenfried, C.
AU - Feuchter, Michael
AU - Brenn, Günter
N1 - Publisher Copyright: © 2023, The Author(s).
PY - 2023/7/17
Y1 - 2023/7/17
N2 - Computational modelling of a centrifugal technique for separating binary mixtures of thermoplastic polymers in the molten state is presented. The technique may be useful for the recycling of polymeric materials. The study investigates the physical process of component separation due to the centrifugal force in a batch process, showing the potential of using a dispersed model for describing the complex mechanism underlying the technique. Given the long time scales of change of the flow field, the polymer melts are modelled as inelastic, shear-thinning materials. The centrifugal force drives the component with the higher density to the outer region of an annular cross section occupied by the melt inside a rotating containment. The model system PET/LDPE is investigated in detail. The simulations allow to predict the process time needed for the separation. The simulations are the basis for studying a continuous process in a rotating tube.
AB - Computational modelling of a centrifugal technique for separating binary mixtures of thermoplastic polymers in the molten state is presented. The technique may be useful for the recycling of polymeric materials. The study investigates the physical process of component separation due to the centrifugal force in a batch process, showing the potential of using a dispersed model for describing the complex mechanism underlying the technique. Given the long time scales of change of the flow field, the polymer melts are modelled as inelastic, shear-thinning materials. The centrifugal force drives the component with the higher density to the outer region of an annular cross section occupied by the melt inside a rotating containment. The model system PET/LDPE is investigated in detail. The simulations allow to predict the process time needed for the separation. The simulations are the basis for studying a continuous process in a rotating tube.
KW - Centrifugal technique
KW - Computational simulation
KW - Polymer blend component separation
KW - Polymer recycling
KW - Process time
UR - http://www.scopus.com/inward/record.url?scp=85165230110&partnerID=8YFLogxK
U2 - 10.1007/s10965-023-03682-x
DO - 10.1007/s10965-023-03682-x
M3 - Article
AN - SCOPUS:85165230110
VL - 30.2023
JO - Journal of polymer research
JF - Journal of polymer research
SN - 1022-9760
IS - 8
M1 - 308
ER -