Modeling and Characterization of Recycled High-Performance Polymer Materials

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Polymer Science".

Deadline for manuscript submissions: 30 July 2024 | Viewed by 725

Special Issue Editors


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1. Transfercenter für Kunststofftechnik GmbH, Franz-Fritsch-Strasse 11, 4600 Wels, Austria
2. School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstr. 23, 4600 Wels, Austria
Interests: structure–processing–property relationships of polymer-based systems; polymer matrix composites; simple models for predicting polymer matrix composite properties; mechanical recycling of plastics; natural fiber reinforcement
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Engineering, University of Applied Sciences Upper Austria, Stelzhamerstr. 23, 4600 Wels, Austria
Interests: determination of material properties for polymer extrusion; tribology in polymer processing; development and modeling of extrusion processes; polymer rheology; wetting and adhesion in polymer processing; thermoforming; liquid crystal polymers
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

Recycling is an important issue used to conserve our limited resources and save on energy. While recycling is a widely researched topic for packaging materials and other similar short-lived applications, for other high-performing materials, this is less of a present topic. High-performance polymers are characterized by their outstanding thermal stability, chemical resistivity, and mechanical properties. In addition, they are suited for a variety of applications in many different areas, including automotive, aerospace, defense, electronics, medical, and sport and safety equipment. Due to their nature, these polymers are often more complex to produce, thus requiring more energy and overall effort, and they are therefore even more interesting to recycle. This Special Issue of Polymers is dedicated to the reprocessing and recycling of high-performance polymer materials, with an emphasis on modeling such processes and characterizing said polymer materials. Computational modeling and simulation have emerged as an indispensable tool to complement and/or guide experiments in every field. The complex and intriguing mechanical/physical properties of polymeric materials, originating from multiple spatial and temporal scales, call for advanced multiscale computational techniques in order to account for the all-important mechanisms in polymers. Using these to understand the complex structure–processing–property relationships in polymer-based composites and blends helps to further develop polymeric materials. Various polymer materials characterization methods are needed to investigate material properties, often by combining them to extract even more valuable information which would otherwise be inaccessible, and with that deliver the basis for modeling approaches. This Special Issue aims to compile original and cutting-edge research works in the field of the modeling and characterization of reprocessed and recycled high-performance polymer materials. 

Prof. Dr. Christoph Burgstaller
Prof. Dr. Gernot Zitzenbacher
Guest Editors

Manuscript Submission Information

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Keywords

  • functional
  • manufacturing
  • characterization
  • modeling

Published Papers (1 paper)

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Research

15 pages, 2686 KiB  
Article
Advancing the Characterization of Recycled Polyolefin Blends with a Combined Experimental and Numerical Approach to Thermomechanical Behavior
by Pei Hao, Charmayne Siebers, Kim Ragaert and Francisco A. Gilabert
Polymers 2024, 16(8), 1153; https://doi.org/10.3390/polym16081153 - 19 Apr 2024
Viewed by 516
Abstract
The blending of polyolefins (POs), such as polyethylene (PE) and polypropylene (PP), is a growing area of research, particularly for recycling mixed polyolefin (MPO) waste through flotation sorting techniques. However, understanding the thermomechanical behavior of these recycled blends is challenging due to limitations [...] Read more.
The blending of polyolefins (POs), such as polyethylene (PE) and polypropylene (PP), is a growing area of research, particularly for recycling mixed polyolefin (MPO) waste through flotation sorting techniques. However, understanding the thermomechanical behavior of these recycled blends is challenging due to limitations in the existing characterization methods. This paper introduces a combined experimental and numerical method to accurately assess the complex mechanical behavior of high-density PE, PP, and their blends. We conducted detailed thermomechanical analyses using a high-speed stereo digital image correlation (DIC) system paired with an infrared camera to capture temperature variations alongside mechanical stress and strain. This approach allowed us to correct for distortions caused by necking and to derive accurate stress–strain relationships. We also applied a cutting-edge unified semi-crystalline polymer (USCP) model to simplify the analysis, focusing on the effects of strain rate and temperature, including self-heating and thermal softening phenomena. Our results, which closely match experimental observations of stress–strain behavior and temperature changes, offer new insights into the thermomechanical properties of PO blends, which are essential for advancing their practical applications in various fields. Full article
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