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Special Issue "Thermal Characterization and Applications of Polymer Composites"

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

Deadline for manuscript submissions: 15 January 2024 | Viewed by 3181

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Special Issue Editors

Dr. Mariola Robakowska

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Department of Polymers, Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland
Interests: photopolymerization; photocurable coatings, kinetics of polymerization; SLA/DLP stereolithography; nanocomposites; hybrid polymeric materials; biomaterials; solid-state electrolyte; fillers; thermal properties

Dr. Łukasz Gierz

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Faculty of Mechanical Engineering, Poznan University of Technology, 60-965 Poznan, Poland
Interests: innovative machines and devices for the agri-food and forestry sector; DEM and FEM simulation studies; artificial intelligence; neural networks; machine learning; computer image analysis; SLA/DLP; mechanical and thermal properties; application of coatings in devices and machines; photopolymerization; photocurable coatings
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Dr. Anna Modrzejewska-Sikorska

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Institute of Chemistry and Technical Electrochemistry, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, 60-965 Poznan, Poland
Interests: metal and non-metal nanostructures; nanostructures stabilized by biopolymers; properties and application of nanostructures; polymer fillers
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Thermal analysis provides a powerful tool for researchers to determine both unknown and reproducible properties of polymer composite materials. Thermal analysis is a branch of science for studying the thermophysical and kinetic properties of materials with temperature. Moreover, the relevant thermal properties of materials are related to energy transport and thermal transitions. Heat-conducting polymer composites are of particular interest. To improve the thermal conductivity of polymer composites, conducting fillers with relatively high thermal conductivity such as metal powders and carbon-based material such as graphite or inorganic particles may be used.

The purpose of this Special Issue is to collect high-quality articles in the fields of thermal properties of polymer (nano)composites. Potential topics include but are not limited to the application of thermoanalytical methods in the study of polymer composites with a special focus on thermogravimetry, differential scanning calorimetry, and thermomechanical analysis or thermal conductivity analysis.

It is our pleasure to invite you to submit a manuscript to this Special Issue. Full papers, communications, and reviews are all welcome.

We look forward to receiving your contributions.

Dr. Mariola Robakowska
Dr. Gierz Lukasz
Dr. Anna Modrzejewska-Sikorska
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

thermal conductivity analysis
thermal properties
thermogravimetry
differential thermal analysis
polymer composite

Published Papers (3 papers)

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Research

Open AccessArticle

Preparation of Monotrimethoxylsilylethyl-Terminated Polysiloxane Fluids and Their Application in Thermal Interface Materials

and

Polymers 2023, 15(16), 3334; https://doi.org/10.3390/polym15163334 - 08 Aug 2023

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Abstract

In this study, α-Trimethylsilylmethyl-ω-dimethylsilyl-terminated polydimethylsiloxane, polydiethylsiloxane and poly[2,2,2-trifluoropropyl(methyl)siloxane] are synthesized using an anion catalyzed nonequilibrium polymerization reaction with trimethylsilylmethyl lithium as the initiator; hexamethylcyclotrisiloxane, hexaethylcyclotrisiloxane or 1,3,5-trimethyl-1,3,5-trifluoropropylcyclotrisiloxane as the monomer; and dimethylchlorosilane as an end-capping agent. Three kinds of α-trimethylsilylmethyl-ω-trimethoxylsilylethyl-terminated polysiloxanes are further prepared by hydrosilylation reaction of α-trimethylsilylmethyl-ω-dimethylsilyl-terminated polysiloxanes with vinyltrimethoxysilane using Karstedt’s catalyst. These α-trimethylsilylmethyl-ω-trimethoxylsilylethyl-terminated polysiloxanes are functionalized as in situ surface treatment agents for AlN particles. The effects of the structure of these polysiloxanes on the dispersion of AlN in the polysiloxane matrix and on the heat transfer performance of silicone pastes and silicone rubbers are investigated. A possible mechanism of surface treatment of AlN fillers by these novel silicone fluids is also discussed. Full article

(This article belongs to the Special Issue Thermal Characterization and Applications of Polymer Composites)

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Open AccessArticle

Thermal Stability of Polycaprolactone Grafted Densely with Maleic Anhydride Analysed Using the Coats–Redfern Equation

Kotchaporn Thangunpai

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Polymers 2022, 14(19), 4100; https://doi.org/10.3390/polym14194100 - 30 Sep 2022

Cited by 2 | Viewed by 1176

Abstract

The plastic waste problem has recently attracted unprecedented attention globally. To reduce the adverse eff ects on environments, biodegradable polymers have been studied to solve the problems. Poly(ε-caprolactone) (PCL) is one of the common biodegradable plastics used on its own or blended with natural polymers because of its excellent properties after blending. However, PCL and natural polymers are difficult to blend due to the polymers’ properties. Grafted polymerization of maleic anhydride and dibenzoyl peroxide (DBPO) with PCL is one of the improvements used for blending immiscible polymers. In this study, we first focused on the effects of three factors (stirring time, maleic anhydride (MA) amount and benzoyl peroxide amount) on the grafting ratio with a maximum value of 4.16% when applying 3.000 g MA and 1.120 g DBPO to 3.375 g PCL with a stirring time of 18 h. After that, the grafting condition was studied based on the kinetic thermal decomposition and activation energy by the Coats–Redfern method. The optimal fitting model was confirmed by the determination coefficient of nearly 1 to explain the contracting volume mechanism of synthesized PCL-g-MA. Consequently, grafted MA hydrophilically augmented PCL as the reduced contact angle of water suggests, facilitating the creation of a plastic–biomaterial composite. Full article

(This article belongs to the Special Issue Thermal Characterization and Applications of Polymer Composites)

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Open AccessArticle

Synthesis and Characterization of a Self-Polycondensation Diazaphthalanone Monomer and Its Polymers from Polycondensation Reactions

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Polymers 2022, 14(18), 3904; https://doi.org/10.3390/polym14183904 - 19 Sep 2022

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Abstract

Polyether ketone (PEK) plastics are linear thermoplastic polymers connected by at least one ether bond and at least one ketone bond on the aryl group. The reason for their excellent heat resistance, rigidity, and mechanical strength is that their main molecular chain contains plenty of aromatic rings and polar carbonyl groups, and their molecular chain presents a large rigidity and strong intermolecular force. In addition, the main chain contains a considerable number of ether bonds, resulting in a certain toughness. However, polyether ketone materials have the disadvantage of poor solubility because of their excellent rigidity. To improve the solubility of polyether ketone, the preparation method of a novel nitrogenous heterocyclic polyaromatic ether monomer, 2-(4-chlorophenyl)-2,3-dihydrophthalazine-1,4-dione (CDD), was proposed, and its activity of polymerization was studied. The average molecular weight of the poly(aryl ether ketone) containing a nitrogenous heterocyclic polyaromatic ether group obtained by self-polycondensation of CDD was 4.181 × 10³ kg/mol, and the yield was 90.5%. In order to further explore the activity of monomers, novel copolymerized poly(aryl ether ketone) (PBCD) containing a nitrogenous heterocyclic polyaromatic ether structure was prepared by ternary copolymerization with 4,4-difluorobenzophenone (DFBP) and bisphenol fluorene (BHPF) with high activity. The average molecular weight of PBCD was 72.793 × 10³ kg/mol, the molecular weight distribution was 2.344, and the yield was 88.1%. Fourier transform infrared spectroscopy (FT-IR) and ¹H NMR were used to confirm the structure of the obtained polymer. Through thermogravimetric analysis (TGA), the determined weight loss temperature of 5% under nitrogen was higher than 500 °C, indicating excellent thermal stability. Compared with the solubility of the binary copolymer containing fluorenyl poly(aryl ether ketone) (PBD), the polymer showed reasonable solubility in selective solvents such as chloroform and N,N-dimethylacetamide. Full article

(This article belongs to the Special Issue Thermal Characterization and Applications of Polymer Composites)

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