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Mechanism of the esterified processing aid based on PEG and fluoropolymers in molten high-density polyethylene (HDPE)

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Abstract

In this study, the performance mechanism of a new esterified PEG and a fluoropolymer as two different polymer processing aids (PPAs) on the HDPE was investigated. Die pressure of HDPE with introducing 1000 ppm of PPAs was conducted using the extrusion process. Our findings showed that PEG-based PPA decreased the primary pressure of HDPE from the start of the process while fluoropolymers after an induction time of around 6 min affect the HDPE die pressure. Time sweep tests were performed at two constants angular frequencies of 100 and 625 s− 1. During experiment time, the HDPE behavior was significantly influenced at high frequency for all samples including PPAs; whereas it was constant for HDPE. The study of the complex viscosity and dynamic modulus revealed that PEG-based PPA and fluoropolymer did not affect at low frequency. The rheological behavior of HDPE was altered as frequency increased from 100 to 625 s− 1.

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Data availability

The data that support the findings of this study are available in our previous article https://doi.org/10.1063/5.0053461.

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  1. Polymer Engineering Department, Sahand University of Technology, Sahand New Town, Tabriz, Iran

    Samaneh Dehghani

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Dehghani, S. Mechanism of the esterified processing aid based on PEG and fluoropolymers in molten high-density polyethylene (HDPE). J Polym Res 30, 153 (2023). https://doi.org/10.1007/s10965-023-03529-5

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