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Authors Khonakdar, H. A. ; Golriz, M. ; Jafari, S.H. ; Abedini, H. ; Wagenknecht, U. ; Heinrich, G.
Title A study on transreactions of PET/PEN reactive blending in a twin-screw extruder using axial dispersion model
Date 12.04.2012
Number 29684
Abstract Transreactions of PET and PEN melt-mixed in a twin-screw extruder are investigated. The extruder is modeled and characterized in the frame of a tubular system of closed type. The kinetic modeling is based on a modified second-order reversible reaction equation, which allows the dispersion equation to be solved analytically. The analysis shows a good agreement between the model and experiment. The axial dispersion model is employed to predict the extent of transesterification reactions (X) and degree of randomness (RD). 1H NMR measurements are performed to estimate X and RD. Theoretical and experimental data are in good agreement. The model can thus be exploited to describe the effects of processing parameters, mixing time, mixing temperature, and blend composition on X and RD.
Publisher Macromolecular Theory and Simulations
Wikidata
Citation Macromolecular Theory and Simulations 21 (2012) 340-349
DOI https://doi.org/10.1002/mats.201100106
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