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Polymers 2018, 10(2), 147; https://doi.org/10.3390/polym10020147

An Investigation and Comparison of the Blending of LDPE and PP with Different Intrinsic Viscosities of PET

National Engineering Laboratory for Textile Fiber Materials and Processing Technology (Zhejiang), Zhejiang Sci-Tech University, Hangzhou 310018, China
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Received: 5 December 2017 / Revised: 1 February 2018 / Accepted: 1 February 2018 / Published: 5 February 2018
(This article belongs to the Special Issue Processing-Structure-Properties Relationships in Polymers)
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Abstract

The blending of aliphatic polyolefins and aromatic poly(ethylene terephthalate) (PET) based on different intrinsic viscosities (IV) was conducted in a torque rheometer. The comparison of blend components in terms of low density polythene (LDPE) and polypropylene (PP) in blending with PET was investigated, and the effects of the IV and proportion of PET on polymer blends are discussed in detail. Polymer blends with or without compatibilizer were examined by using a differential scanning calorimeter, thermogravimetric analyzer, rotary rheometer, field-emission scanning electron microscopy and a universal testing machine. It was found that the blending led to an increase in processability and a decrease in thermal stability for blends. The morphological analysis revealed that the incompatibility of blends was aggravated by a higher IV of PET, while this situation could be improved by the addition of compatibilizer. Results showed that there was an opposite effect for the tensile strength and the elongation at break of the polymer blend in the presence of a compatibilizer, wherein the influence of IV of PET was complicated. View Full-Text
Keywords: polymer blend; poly(ethylene terephthalate); intrinsic viscosity; polyolefin; compatibilizer polymer blend; poly(ethylene terephthalate); intrinsic viscosity; polyolefin; compatibilizer
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Chen, S.-C.; Zhang, L.-H.; Zhang, G.; Zhong, G.-C.; Li, J.; Zhang, X.-M.; Chen, W.-X. An Investigation and Comparison of the Blending of LDPE and PP with Different Intrinsic Viscosities of PET. Polymers 2018, 10, 147.

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