Special Issue "Polymeric Thin Films and Membranes II"

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

Deadline for manuscript submissions: 20 August 2021.

Special Issue Editors

Prof. Maria J. Sanchis
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Guest Editor
Instituto Tecnológico de la Energía, Universitat Politecnica de Valencia, Spain
Interests: molecular mobility; Thermal, mechanical, dielectric properties; biomaterials, nano technology
Dr. Marta Carsí
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Guest Editor
Instituto Universitario de Automática e Informática Industrial, Universitat Poltecnica de Valencia, Spain
Interests: molecular mobility; thermal; mechanical; dielectric properties; biomaterials; nano technology
Special Issues and Collections in MDPI journals
Dr. Michael J.D. Nugent
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Guest Editor
Athlone Institute of Technology, Dublin Road, Athlone, County Westmeath, Ireland
Interests: biomaterials; smart hydrogels; nanotechnology; drug delivery
Special Issues and Collections in MDPI journals
Dr. Pilar Ortiz Serna
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Guest Editor
Department of Applied Thermodynamics, Universitat Politècnica de València, Valencia, Spain
Interests: polymers, termal and dielectrical characterization

Special Issue Information

Dear Colleagues,

Investigations involving polymer films and membranes represent a rapidly growing research area in physics, materials/polymer science, chemistry, and engineering. The study of the dynamics of polymer molecules has been one of the most fruitful areas of polymer physics. The glass transition, the precursor of which is the glass-liquid relaxation, is one of the most important unsolved subjects in the physics of condensed matter. In cooling, supercooled liquids can reach a temperature in the vicinity of which ergodicity is lost. The physical properties of the materials are directly related to the structure and molecular mobility of the same. For this reason, a special focus always has been placed on understanding dynamics and the glass transition in polymer films.

In recent years, the current trend to miniaturization of existing devices has stimulated the development of polymer material thin films, which has brought with it the investment of a substantial effort to understand dynamics and the glass transition in thin polymer films. In many cases, the thin films can be of complex composition with different types of polymers with complex architecture and other components such as nanoparticles/nanofibers. Furthermore, the prediction and determination of materials/fluids properties at the nanoscale is not a trivial task and the current experimental data supports that unexpected deviations from bulk behaviour are not uncommon, due to the geometric constraints imposed by the presence of surfaces and interfaces. Confinement effects and interfacial interactions are determinants of the molecular mobility of the molecular chains and thus of the physical properties of these thin-film polymeric materials. The close monitoring of the mobility changes induced in the vicinity of surfaces and interfaces is highly attractive. It enables the design of materials with tailor-made properties depending on the desired technological application. For this reason, significant effort has been invested in the design, as well as in the study of their physical properties, of new low cost methodologies for the directed and controlled manufacture of nanostructures and nanoparticles based on thin and ultrafine films of polymeric materials based.

This Special Issue, “Polymeric Thin Films and Membranes II,” aims to provide an overview of the current state of knowledge on the synthesis, characterization and use of polymeric film thin materials in important technological applications. Given the interdisciplinary nature of thin polymer films, we hope that this Special Issue will present a collection of high-caliber original/reviewed contributions from scientists from a wide range of disciplines: chemists, chemical engineers, materials scientists, physicists and technologists.

These thin polymer films have numerous technological applications in various industrial and biomedical sectors. Among these applications, we include sensor & device technologies, microelectronics and optoelectronics, catalysts, separations, advanced membranes, microfluidics, electroactive protective shields, bright fluorescent coatings to new adhesives, low friction coatings, design of energy-efficient materials, new portable devices, such as wearable medical devices, applications as biomaterials and biocompatibility of medical implants. High temperature polymeric materials for electrical insulation and energy storage are needed for transformational power applications such as pulsed-power and hybrid electrical vehicles.

In addition, the aim is to achieve functional materials using approaches that are simple to realize, use low cost materials that are potentially scalable. The environmental friendliness at reduced cost represent the driving force for profound changes in contemporary technology. In this respect, new synthetic procedures have been developed using resources of natural origin for the preparation of these new polymeric materials and green chemistry.

Prof. Maria J. Sanchis
Dr. Marta Carsí
Dr. Michael J.D. Nugent
Dr. Pilar Ortiz Serna
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 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. 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 2200 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

  • Dynamic Mobility
  • biotechnology
  • biosensors
  • energy-efficient materials
  • Polymer coatings
  • Nano technology
  • Smart Hydrogels

Published Papers (2 papers)

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Research

Open AccessArticle
Role of Doping Agent Degree of Sulfonation and Casting Solvent on the Electrical Conductivity and Morphology of PEDOT:SPAES Thin Films
Polymers 2021, 13(4), 658; https://doi.org/10.3390/polym13040658 - 23 Feb 2021
Viewed by 219
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT) plays a key role in the field of electrically conducting materials, despite its poor solubility and processability. Various molecules and polymers carrying sulfonic groups can be used to enhance PEDOT’s electrical conductivity. Among all, sulfonated polyarylether sulfone (SPAES), prepared via homogenous [...] Read more.
Poly(3,4-ethylenedioxythiophene) (PEDOT) plays a key role in the field of electrically conducting materials, despite its poor solubility and processability. Various molecules and polymers carrying sulfonic groups can be used to enhance PEDOT’s electrical conductivity. Among all, sulfonated polyarylether sulfone (SPAES), prepared via homogenous synthesis with controlled degree of sulfonation (DS), is a very promising PEDOT doping agent. In this work, PEDOT was synthesized via high-concentration solvent-based emulsion polymerization using 1% w/w of SPAES with different DS as dopant. It was found that the PEDOT:SPAESs obtained have improved solubility in the chosen reaction solvents, i.e., N, N-dimethylformamide, dimethylacetamide, dimethyl sulfoxide, and N-methyl-2-pyrrolidone and, for the first time, the role of doping agent, DS and polymerization solvents were investigated analyzing the electrical properties of SPAESs and PEDOT:SPAES samples and studying the different morphology of PEDOT-based thin films. High DS of SPAES, i.e., 2.4 meq R-SO3× g−1 of polymer, proved crucial in enhancing PEDOT’s electrical conductivity. Furthermore, the DMSO capability to favor PEDOT and SPAES chains rearrangement and interaction results in the formation of a polymer film with more homogenous morphology and higher conductivity than the ones prepared from DMAc, DMF, and NMP. Full article
(This article belongs to the Special Issue Polymeric Thin Films and Membranes II)
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Open AccessArticle
Hydrophilic Films Based on Carboxymethylated Derivatives of Starch and Cellulose
Polymers 2020, 12(11), 2447; https://doi.org/10.3390/polym12112447 - 22 Oct 2020
Cited by 1 | Viewed by 435
Abstract
The carboxymethylated derivatives of starch (CMS) and cellulose (CMC) were used for film preparation. The infrared spectroscopy revealed that crosslinking via ester bridges with citric acid occurred between the two polysaccharide derivatives. The effect of polysaccharide derivatives ratio on physicochemical properties of prepared [...] Read more.
The carboxymethylated derivatives of starch (CMS) and cellulose (CMC) were used for film preparation. The infrared spectroscopy revealed that crosslinking via ester bridges with citric acid occurred between the two polysaccharide derivatives. The effect of polysaccharide derivatives ratio on physicochemical properties of prepared films was evaluated. Generally, the values of tested parameters (moisture absorption, surface roughness, and mechanical and thermal properties) were between the values noted for neat CMS or CMC-based films. However, the physicochemical properties of the system with equal CMS/CMC weight ratio diverged from this trend, i.e., the highest tensile strength, the highest Young’s modulus (ca. 3.4 MPa and ca. 4.9 MPa, respectively), with simultaneously the lowest moisture absorption (18.5% after 72 h) have been noted. Such systems could potentially find application in agriculture or pharmacy. Full article
(This article belongs to the Special Issue Polymeric Thin Films and Membranes II)
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