Compatibilization of polypropylene – polyethylene blends

S. Vervoort, C.F.J. den Doelder, E. Tocha, J. Genoyer, K.L. Walton, Y. Hu, J. Munro, K. Jeltsch

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Abstract

Many plastic waste recycle streams are blends of various types of polypropylene (PP) and polyethylene (PE). When reprocessing these blends into products it is difficult to obtain good mechanical and optical properties due to the immiscibility of the components. Blend morphology is one of the governing factors for these properties. There-fore morphology control is a key challenge when turning plastic waste into valuable materials. In this work, the effect of a novel polymeric compatibilizer on the morphology of PP – PE blends was investigated via rheological and scanning electron microscopy experiments. Homopolymer javascript:void(0);PP was combined with PE of varying comonomer level. In addition to the effect of including compatibilizer, the effect of blend ratio and viscosity ratio is discussed. It was found that very fine dispersions could be obtained when including the compatibilizing polymer for all studied systems. The blend rhe-ology was compared with predictions from empirical and physics-inspired mixing rules. The difference between meas-ured and predicted rheology is expected to provide insight into the structure of the various blend systems.
Original languageEnglish
Title of host publicationProceedings of PMI 2016 – 7th bi-annual International Conference on Polymers and Moulds Innovations
Subtitle of host publication22-23 September 2016, Ghent (Belgium)
Pages301-306
Number of pages7
Publication statusPublished - 22 Sep 2016

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    Vervoort, S., den Doelder, C. F. J., Tocha, E., Genoyer, J., Walton, K. L., Hu, Y., Munro, J., & Jeltsch, K. (2016). Compatibilization of polypropylene – polyethylene blends. In Proceedings of PMI 2016 – 7th bi-annual International Conference on Polymers and Moulds Innovations: 22-23 September 2016, Ghent (Belgium) (pp. 301-306)