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Polymers
Special Issues
Thermodynamics and Kinetics of Multicomponent Polymer Systems
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Thermodynamics and Kinetics of Multicomponent Polymer Systems

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

Deadline for manuscript submissions: closed (25 October 2020) | Viewed by 5874

Special Issue Editors

Prof. Dr. Clara M. Gómez

E-Mail Website
Guest Editor
Institute of Materials Science (ICMUV), University of Valencia, 46980 Paterna, Spain
Interests: conducting polymers; thermoelectricity; polyurethanes; hybrid materials; nanoparticle synthesis; structure–property characterization
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Rafael Muñoz-Espí

E-Mail Website
Guest Editor
Institute of Materials Science (ICMUV), Universitat de València, C/ Catedràtic José Beltrán 2, 46980 Paterna, València, Spain
Interests: multicomponent polymer systems; hybrid materials; conducting polymers; colloidal systems; nanoparticle synthesis
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The combination of components with different features to achieve improved properties of the final product is a common strategy in the design of new materials, and also in polymer science. For polymer materials, the preparation of so-called blends, formed by mixtures of polymers, is probably the most straightforward approach to produce multicomponent polymer systems, but not the only one. In addition to polymer blends, the term “multicomponent” can also be related to the incorporation of inorganic materials to form (nano)composites and polymer/inorganic hybrid materials. In all cases—i.e., “conventional” blends, composites, and hybrids—the miscibility of the constituents is the key parameter that determines the presence or absence of phase separation and the overall thermodynamics of the system. However, the structure of the final material is often not only determined by thermodynamics, but also by kinetic aspects of the synthesis and/or processing.
This Special Issue, “Thermodynamics and Kinetics of Multicomponent Polymer Systems”, aims to collect original research papers and critical reviews on recent progress in multicomponent polymer systems, with emphasis on thermodynamics and kinetic aspects. The issue is open to discussions of any type of multicomponent system, including both polymer/polymer and polymer/inorganic materials. We wish to highlight the importance of new approaches in the design of materials. Theoretical and experimental contributions are welcome.

Topics of interest for this issue may include:

  • Thermodynamics of polymer blends/hybrids
  • Thermodynamics and kinetics of polymer/inorganic composites and hybrid materials
  • Morphology control in multicomponent polymer systems
  • Modeling of phase behavior
  • Self-assembly in multicomponent polymer systems

We look forward to your contributions,

Prof. Dr. Clara M Gómez
Prof. Dr. Rafael Muñoz-Espí
Guest Editors

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

  • Multicomponent
  • Polymer/polymer hybrid
  • Polymer/inorganic hybrid
  • Phase separation
  • Nanocomposite

Published Papers (2 papers)

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Research

19 pages, 3979 KiB  
Article
Study on the Pyrolysis Kinetics and Mechanisms of the Tread Compounds of Silica-Filled Discarded Car Tires
by Chuansheng Wang, Baishun Zhao, Xiaolong Tian, Kongshuo Wang, Zhongke Tian, Wenwen Han and Huiguang Bian
Polymers 2020, 12(4), 810; https://doi.org/10.3390/polym12040810 - 04 Apr 2020
Cited by 18 | Viewed by 3055
Abstract
The disposal of used automobile tires is a major waste concern. Simply stacking tires and allowing them to decompose will harbor breeding mosquitoes that spread viruses, whereas burning them will release acidic and toxic gases. Therefore, one viable option is pyrolysis, where elevated [...] Read more.
The disposal of used automobile tires is a major waste concern. Simply stacking tires and allowing them to decompose will harbor breeding mosquitoes that spread viruses, whereas burning them will release acidic and toxic gases. Therefore, one viable option is pyrolysis, where elevated temperatures are used to facilitate the decomposition of a material. However, the lack of theoretical support for pyrolysis technology limits the development of the pyrolysis industry when it comes to discarded tires. The purpose of this research is to put forward a brand-new multi-kinetic research method for studying materials with complex components through the discussion of various kinetic research methods. The characteristic of this kinetic research method is that it is a relatively complete theoretical system and can accurately calculate the three kinetic factors considered during the pyrolysis of multicomponent materials. The results show that the multi-kinetic research method can obtain the kinetic equation and reaction mechanism for the pyrolysis of tires with high accuracy. The pyrolysis process of this compound was divided into two stages, Reaction I and II, where the kinetic equation of Reaction I was f ( α ) = 0.2473 α − 3.0473 , with an activation energy of 155.26 kJ/mol and a pre-exponential factor of 5.88 × 109/min. Meanwhile, the kinetic equation of Reaction II was f ( α ) = 0.4142 ( 1 − α ) [ − ln ( 1 − α ) ] − 1.4143 , while its activation energy was 315.40 kJ/mol and its pre-exponential factor was 7.86 × 1017/min. Furthermore, based on the results of the research analysis, the reaction principles corresponding to Reaction I and Reaction II in the pyrolysis process of this compound were established. Full article
(This article belongs to the Special Issue Thermodynamics and Kinetics of Multicomponent Polymer Systems)
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14 pages, 1751 KiB  
Article
Thermodynamic Properties and State Diagram of Gum Ghatti-Based Edible Films: Effects of Glycerol and Nisin
by Pingping Zhang, Ya Zhao, Xin Zhang, Lanlan Zhu, Zhongxiang Fang and Qilong Shi
Polymers 2020, 12(2), 449; https://doi.org/10.3390/polym12020449 - 14 Feb 2020
Cited by 11 | Viewed by 2430
Abstract
In this present study, the thermodynamic and thermal properties of glycerol and nisin-incorporated gum ghatti (GG, Anogeissus latifolia)-based films were determined. The films exhibited type III isotherm behaviors. Moisture content (MC) of films was increased with increasing water activity (aw [...] Read more.
In this present study, the thermodynamic and thermal properties of glycerol and nisin-incorporated gum ghatti (GG, Anogeissus latifolia)-based films were determined. The films exhibited type III isotherm behaviors. Moisture content (MC) of films was increased with increasing water activity (aw) and decreased with higher temperature. The incorporation of glycerol and nisin increased the sorption ability of GG films. The net isosteric heat of adsorption (qst) and differential entropy (Sd) were decreased with increasing MC, showing an exponential negative correlation between them. Spreading pressure (φ) was increased with increasing aw, but decreased with higher temperature. This incorporation of glycerol and nisin increased the qst, Sd and φ of the GG films. The sorption behaviors were enthalpy-driven and non-spontaneous processes. The glass transition temperature (Tg), critical MC and aw of the films were decreased, and increased respectively with the incorporation of glycerol and nisin. This work provides a theoretical basis for the application of edible films in fresh food preservation. Full article
(This article belongs to the Special Issue Thermodynamics and Kinetics of Multicomponent Polymer Systems)
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