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Advances in the Thermal Characterization of Polymers and Plastic Waste

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

Deadline for manuscript submissions: 15 December 2025 | Viewed by 668

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Special Issue Information

Dear Colleagues,

Material science with particular reference to polymers, polymer composites and plastic materials (waste or innovative newly synthesized ones) is usually characterized using thermal analysis techniques. Many researchers focus their interests on the study of their thermal behavior, often trying to assess a thermal stability scale among a class of different materials with related structures.

This Special Issue aims to provide a useful platform for distinguished and younger scholars to share their most recent developments on the synthesis, structural, morphological and thermal characterization of innovative and end-of life polymer-based materials, in which thermal analysis techniques (thermogravimetry, differential thermal analysis and differential scanning calorimetry and dynamic mechanical analysis) play a significant role in combination with spectroscopic, structural and computational techniques.

In particular, I address those colleagues who wish to provide deeper insights into the physico-chemical processes directly connected to the thermal treatment of polymers and/or polymer-based materials, with the aim to deliver information of utmost importance for their future innovative applications.

Dr. Stefano Vecchio Ciprioti
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • thermal behavior
  • thermal stability
  • glass transitions
  • crystallization
  • pyrolysis
  • pyrolysis kinetics
  • plastic waste
  • polymer fibers
  • physical aging

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Published Papers (1 paper)

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Research

12 pages, 4568 KiB  
Article
Influence of Molecular Weight and Temperature on the Pyrolysis Behavior of Polyethylene
by Eunji Chae and Sung-Seen Choi
Polymers 2025, 17(5), 576; https://doi.org/10.3390/polym17050576 - 21 Feb 2025
Viewed by 527
Abstract
The pyrolysis technique is a useful recycling method for waste polyethylene (PE). Various PEs with different molecular weights have been produced and are widely used. The major pyrolysis products of PE include alkadienes (CnH2n−2), alkenes (CnH2n [...] Read more.
The pyrolysis technique is a useful recycling method for waste polyethylene (PE). Various PEs with different molecular weights have been produced and are widely used. The major pyrolysis products of PE include alkadienes (CnH2n−2), alkenes (CnH2n), and alkanes (CnH2n+2). In this study, the differences in pyrolysis behavior of PE based on its molecular weight and the pyrolysis temperature (423–764 °C) were investigated using four types of PEs, with Mw = 2.0 × 103, 16.0 × 103, 28.3 × 103, and 56.8 × 103 g/mol. More specifically, the pyrolysis products were compared in terms of their type (alkanes, alkenes, and alkadienes) and size (the number of carbon atoms). The order of production was alkenes > alkanes > alkadienes. The alkadiene/alkene ratios tended to increase with the PE molecular weight and size of the pyrolysis products. The alkadiene/alkene ratio increased until the pyrolysis temperature reached 670 °C. The alkane/alkene ratios tended to decrease as the PE molecular weight increased; however, they increased with the increasing size of the pyrolysis products. The alkane/alkene ratio decreased as the pyrolysis temperature increased, until it reached 670 °C. The formation of alkenes was more favorable than that of alkadienes and alkanes. Full article
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