Morphology evolution in PS/LDPE blends in a twin screw extruder: Effects of compatibilizer |
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Authors: | Do Young Moon Moo Hyun Kwon O Ok Park |
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Affiliation: | (1) Chemical Division R&D Center, Cheil Industries Inc., 322-2 Gochen-dong, 437-010 Euiwang-si, Kyonki-do, Korea;(2) Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Kusong-dong, 305-701 Yusong-gu, Taejon, Korea |
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Abstract: | In order to understand the mixing in polymer extrusion, the morphology of PS/LDPE blends compatibilized with SEBS was simulated based on the Lee and Park model. Experiments were performed in a co-rotating twin screw extruder and a Haake mixer, and the morphology of the compatibilized blends of various compositions was compared with the non-compatibilized ones. The size of the dispersed phase of the compatibilized blend was smaller than the non-compatibilized one, and the blend of the PE matrix had a smaller size in the dispersed phase than the non-compatibilized one. Simulation results were agreed well with experiments, and the Lee and Park model could be applied in the extrusion analysis of compatibilized polymer blends. |
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Keywords: | Morphology PS/LDPE Blend Compatibilizer SEBS Extruder Lee and Park Model |
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