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Special Issue "Thermodynamics and Thermal Transport Properties in Nanomaterials"

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Nanochemistry".

Deadline for manuscript submissions: 31 March 2019

Special Issue Editor

Guest Editor
Dr. Claudio Melis

Universita’ degli studi di Cagliari, Department of Physics, Cagliari, Italy
Website | E-Mail
Interests: nanoscale thermal transport; Aanomalous heat transport in low dimensions; polymer-based hybrids for thermoelectrics and photovoltaics; atomistic simulations (classical molecular dynamics, density functional theory)

Special Issue Information

Dear Colleagues,

Over the last decade, the progress obtained in the synthesis and manufacture of nanomaterials has generated the need of a deeper theoretical and experimental elucidation of thermal transport at the nanoscale. From a technological point of view, thermal management has become one of the main limitations preventing a further reduction in the size of nanodevices. Moreover, nanoscale thermal transport plays a crucial role for many classes of devices, such as thermoelectrics and thermal diodes.

In the last few years a lot of progress has been made in theoretical and experimental understanding of thermal transport across a variety of interfaces, systems of reduced dimensionalities and collective phonons. However, there are still many issues that need to be further elucidated, such as anomalous heat transport in low dimensions and phonon hydrodynamics.

This Special Issue will present the most recent advances in this field with the aim of deepening our understanding in the mechanisms ruling thermal transport properties of different nanoscale materials. This includes, atomistic modeling of phonon transport, phonon–phonon interactions, and manipulation of tailored nanoscale materials.

Dr. Claudio Melis
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 papers will be 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. Molecules is an international peer-reviewed open access monthly 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 1800 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

  • Theoretical methods for phonon dispersions and phonon transport
  • Thermoelectrics
  • Anomalous thermal transport in low dimensions
  • Thermal transport in organic/inorganic composites
  • Phonon hydrodynamics
  • Thermal transport in two-dimensional materials
  • Novel simulation protocols and methods
  • Nanoscale heat transfer around nanoparticles for biomedical use

Published Papers (1 paper)

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Research

Open AccessArticle Thermal Degradation Characteristic and Flame Retardancy of Polylactide-Based Nanobiocomposites
Molecules 2018, 23(10), 2648; https://doi.org/10.3390/molecules23102648
Received: 20 September 2018 / Revised: 7 October 2018 / Accepted: 10 October 2018 / Published: 16 October 2018
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Abstract
Polylactide (PLA) is one of the most widely used organic bio-degradable polymers. However, it has poor flame retardancy characteristics. To address this disadvantage, we performed melt-blending of PLA with intumescent flame retardants (IFRs; melamine phosphate and pentaerythritol) in the presence of organically modified
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Polylactide (PLA) is one of the most widely used organic bio-degradable polymers. However, it has poor flame retardancy characteristics. To address this disadvantage, we performed melt-blending of PLA with intumescent flame retardants (IFRs; melamine phosphate and pentaerythritol) in the presence of organically modified montmorillonite (OMMT), which resulted in nanobiocomposites with excellent intumescent char formation and improved flame retardant characteristics. Triphenyl benzyl phosphonium (OMMT-1)- and tributyl hexadecyl phosphonium (OMMT-2)-modified MMTs were used in this study. Thermogravimetric analysis in combination with Fourier transform infrared spectroscopy showed that these nanocomposites release a smaller amount of toxic gases during thermal degradation than unmodified PLA. Melt-rheological behaviors supported the conclusions drawn from the cone calorimeter data and char structure of the various nanobiocomposites. Moreover, the characteristic of the surfactant used for the modification of MMT played a crucial role in controlling the fire properties of the composites. For example, the nanocomposite containing 5 wt.% OMMT-1 showed significantly improved fire properties with a 47% and 68% decrease in peak heat and total heat release rates, respectively, as compared with those of unmodified PLA. In summary, melt-blending of PLA, IFR, and OMMT has potential in the development of high-performance PLA-based sustainable materials. Full article
(This article belongs to the Special Issue Thermodynamics and Thermal Transport Properties in Nanomaterials)
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