Thermal Processes and Thermal Properties of Sustainable Polymeric Materials

A special issue of Thermo (ISSN 2673-7264).

Deadline for manuscript submissions: 10 September 2024 | Viewed by 1772

Special Issue Editors


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Guest Editor
Materials Science, Energy, and Nano-Engineering MSN Department, Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Ben Guerir 43150, Morocco
Interests: thermodynamics; fluid phase equilibrium; structure–properties relationships; various thermodynamic-based models; process simulation models
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Special Issue Information

Dear Colleagues,

The word ‘Thermo’ originates from the Greek word ‘θερμός’ (thermos), meaning hot. Aristotle (384–322 BC) related each of the four ultimate elements which had been established by Empedocles (c. 494 – c. 434 BC), [γῆ  (gê—earth), ὕδωρ (hýdōr—water), ἀήρ (ar—air), and πῦρ (pŷr—fire)] to two of the four sensible qualities. The qualities were θερμό (thermo—hot), ψυχρό (psychro—cold), υγρό (hygro—wet), and ξηρόν (xero—dry). Consequently, from the very beginning of the history of science, heat and thermal properties were put at the center.

Natural polymers such as wood, wool, and cotton cellulose were among the first materials used by man. The combustion of wood has provided people with heat for hundreds of thousands of years. Nowadays, synthetic polymers are materials of everyday life. Recently, sustainable polymeric materials have attracted increasing interest. Polymer processing involves mass transfer, heat transfer, flow, and deformation. An important characteristic of most polymer processes is the softening of the polymer achieved by heating it. Then, to set the shape, cooling or crosslinking is applied. The relation between processing–structure–properties–performance is the main issue to address in polymer science and engineering. In addition, the pyrolysis of biomass which consists of natural polymers, for e.g. cellulose, or the pyrolysis of polymeric wastes are new ways to produce fuels, monomers, and chemicals. Finally, thermal analysis techniques including DSC, TGA, etc., are used in the study of the thermal properties and processes of polymers.

Authors are encouraged to submit their research for this Special Issue. Topics include but are not limited to:

  • Thermal properties of polymers
  • Thermal processes of polymers
  • Thermal analysis of polymers
  • Crystallization and melting of polymers
  • Thermal degradation of polymers
  • Thermo-oxidative degradation of polymers
  • Thermal polymerization
  • Polymer recycling
  • Pyrolysis of biomass
  • Thermochemical conversion of biomass
  • Pyrolysis of polymer wastes
  • Polymer blending
  • Extrusion
  • Blow molding
  • Injection molding
  • Heat transfer
  • Thermodynamics of polymer processing
  • Polymer crystallization kinetics
  • Thermochemical processes in biorefineries
  • Combustion
  • Melt polycondensation
  • Temperature control in polymerization reactors

Prof. Dr. George Z. Papageorgiou
Prof. Dr. Johan Jacquemin
Guest Editors

Manuscript Submission Information

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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. Thermo is an international peer-reviewed open access quarterly 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 1000 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 properties of polymers
  • thermal processing of polymers
  • thermal degradation of polymers
  • thermal analysis of polymers
  • pyrolysis
  • melting
  • crystallization
  • blending of polymers
  • extrusion
  • injection

Published Papers (2 papers)

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Research

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12 pages, 6358 KiB  
Article
Alterations of a CaCl2 Alginate Composite for Thermochemical Heat Storage during the Hydration in a 1 L Packed Bed Laboratory Reactor
by Stephan Heitmann, Tamás Simon, Andrea Osburg and Michael Fröba
Thermo 2023, 3(4), 593-604; https://doi.org/10.3390/thermo3040035 - 10 Oct 2023
Cited by 1 | Viewed by 814
Abstract
A composite material of alginate and CaCl2 was tested in a laboratory reactor (1 L) for its ability to thermochemically store heat. The material was exposed to air at 25 °C and 25% RH to prevent the salt from dissolving, and the [...] Read more.
A composite material of alginate and CaCl2 was tested in a laboratory reactor (1 L) for its ability to thermochemically store heat. The material was exposed to air at 25 °C and 25% RH to prevent the salt from dissolving, and the heat evolution was observed over a period of 15 cycles. To evaluate the changes in the material, samples were taken after 5, 10 and 15 cycles and the material properties and calorimetric characteristics were examined. A change of the material in favor of the heat release was determined, so that an increase of the heat storage capacity from 1.28 kJ∙cm−3 to 2.11 kJ∙cm−3 was detected, with a simultaneous steep decrease of the pore volume in the range from 0.01 to 10 μm. The temperature lift of the reactor showed a significant increase, with the first cycle showing the smallest amount. Full article
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17 pages, 1178 KiB  
Review
Theoretical Characterization of Thermal Conductivities for Polymers—A Review
by Cornelia Breitkopf
Thermo 2024, 4(1), 31-47; https://doi.org/10.3390/thermo4010004 - 13 Feb 2024
Viewed by 483
Abstract
Polymer thermal conductivities play an important role for their potential use in industrial applications. Therefore, great efforts have been made to investigate fundamental structure–property relationships to understand and predict thermal conductivities for polymers and their composites. The review summarizes selected well-proven microscopic theoretical [...] Read more.
Polymer thermal conductivities play an important role for their potential use in industrial applications. Therefore, great efforts have been made to investigate fundamental structure–property relationships to understand and predict thermal conductivities for polymers and their composites. The review summarizes selected well-proven microscopic theoretical approaches to calculate thermal conductivities such as EMD, NEMD, EMT, and BTE, and cites examples to focus on different qualitative aspects of recent polymer theoretical research. Examples other than polymer materials are given as supplemental information to support the general discussion of heat transport phenomena in solid materials. Full article
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