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Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications
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Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Polymeric Materials".

Deadline for manuscript submissions: closed (20 December 2023) | Viewed by 5101

Special Issue Editor

Dr. Alenka Ojstršek

E-Mail Website
Guest Editor
Institute of Engineering Materials and Design, Faculty of Mechanical Engineering, University of Maribor, Maribor, Slovenia
Interests: polymeric materials; coatings; surface functionalization; functional dyes and pigments; material characterization; nanostructured materials; nanocomposites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Numerous advanced or functional polymers in the form of thin films can be applied onto the surface of various materials which utilize different coating techniques, such as dip coating, roll-to-roll coating, spin coating, spray coating, etc. Accordingly, the surface properties (adhesion, wettability, and biocompatibility) are modified, and the morphological, physical–mechanical, and/or optical properties changed. Moreover, the special (multi)functionalities, such as flame retardancy, super-hydrophobicity, thermal and electro-conductivity, antibacterial, self-cleaning, heat-generating, sensing, UV- and EMI-shielding functionalities, etc., can be tuned regarding the final applications (protection, textile, biomedical, packaging, energy, automotive, optoelectronic, environmental, and aerospace).

This Special Issue aims to cover the most recent experimental and theoretical developments in the field of polymer-coated materials (membranes, films, fibers, textiles, composites, metals, glass, etc.) with focus on their fabrication, characterization, functional properties, and applications. Researchers from both academia and industry are invited to contribute manuscripts in the form of original full-length articles, communications, and critical reviews.

Dr. Alenka Ojstršek
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 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. Materials 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 2600 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

  • functional polymers
  • polymer-coated materials
  • thin film and interfaces
  • fabrication techniques
  • multifunctionality
  • durability
  • protective applications
  • textile applications
  • wastewater applications
  • biomedical applications

Published Papers (4 papers)

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Research

16 pages, 3052 KiB  
Article
Engineered Nanocomposite Coatings: From Water-Soluble Polymer to Advanced Hydrophobic Performances
by Syrine Jebali, Marylène Vayer, Khaled Belal and Christophe Sinturel
Materials 2024, 17(3), 574; https://doi.org/10.3390/ma17030574 - 25 Jan 2024
Viewed by 800
Abstract
In this work, a water-soluble (hydrophilic) polymer was used to form a hydrophobic coating on silicon substrates (Si) in a two-step process comprising (i) the transformation of the polymer into an insoluble material and (ii) the structuring of this coating at nanometric and [...] Read more.
In this work, a water-soluble (hydrophilic) polymer was used to form a hydrophobic coating on silicon substrates (Si) in a two-step process comprising (i) the transformation of the polymer into an insoluble material and (ii) the structuring of this coating at nanometric and micrometric scales to achieve the desired hydrophobic behavior. Polyvinylpyrrolidone (PVP), a water-soluble commodity polymer, was crosslinked using benzophenone and UV irradiation to produce a water-insoluble PVP coating. The nanometric scale roughness of the coating was achieved by the addition of silica nanoparticles (NPs) in the coating. The micrometric scale roughness was achieved by forming vertical pillars of PVP/NP coating. To prepare these pillars, a perforated polystyrene (PS) template was filled with a PVP/NP suspension. Micrometer scale vertical pillars of PVP/silica NPs were produced by this method, which allowed us to tune the wettability of the surface, by combining the micrometric scale roughness of the pillars to the nanometric scale roughness provided by the nanoparticles at the surface. By adjusting the various experimental parameters, a hydrophobic PVP coating was prepared with a water contact angle of 110°, resulting in an improvement of more than 80% compared to the bare flat film with an equal amount of nanoparticles. This study paves the way for the development of a more simplified experimental approach, relying on a blend of polymers containing PVP and NPs, to form the micro/nano-structured PVP pillars directly after the deposition step and the selective etching of the sacrificial major phase. Full article
(This article belongs to the Special Issue Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications)
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18 pages, 4636 KiB  
Article
Experimental and Numerical Investigation into the Effect of Water Uptake on the Capacitance of an Organic Coating
by Steven A. Policastro, Rachel M. Anderson, Carlos M. Hangarter, Attilio Arcari and Erick B. Iezzi
Materials 2023, 16(10), 3623; https://doi.org/10.3390/ma16103623 - 9 May 2023
Cited by 4 | Viewed by 1182
Abstract
Water uptake by organic coating systems used for corrosion prevention on airframes is one of the principal contributors to the loss of barrier properties of the coating. We used equivalent circuit analyses of electrochemical impedance spectroscopy (EIS) data to track changes in coating [...] Read more.
Water uptake by organic coating systems used for corrosion prevention on airframes is one of the principal contributors to the loss of barrier properties of the coating. We used equivalent circuit analyses of electrochemical impedance spectroscopy (EIS) data to track changes in coating layer capacitance for a two-layer coating system consisting of an epoxy primer and polyurethane topcoat immersed in NaCl solutions with different concentrations and temperatures. The capacitance curve exhibited two different response regions, consistent with the “two-stage kinetics” mechanisms for water uptake by the polymers. We tested several numerical diffusion models of water sorption and found the most successful to be one that varied the diffusion coefficient as a function of polymer type and immersion time and accounted for physical aging processes in the polymer. We employed the Brasher mixing law along with the water sorption model to estimate the coating capacitance as a function of water uptake. The predicted capacitance of the coating was found to be consistent with the capacitance obtained from the EIS data, which is consistent with theories that water uptake occurs via initial rapid transport followed by a much slower aging process. Thus, both these water uptake processes need to be considered when making EIS measurements to assess the state of a coating system. Full article
(This article belongs to the Special Issue Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications)
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12 pages, 2289 KiB  
Article
Patterning of Polymer-Functionalized Nanoparticles with Varied Surface Mobilities of Polymers
by Shuting Gong, Tianyi Wang, Jiaping Lin and Liquan Wang
Materials 2023, 16(3), 1254; https://doi.org/10.3390/ma16031254 - 1 Feb 2023
Viewed by 1196
Abstract
The polymers can be either dynamically tethered to or permanently grafted to the nanoparticle to produce polymer-functionalized nanoparticles. The surface mobility of polymer ligands with one end anchored to the nanoparticle can affect the surface pattern, but the effect remains unclear. Here, we [...] Read more.
The polymers can be either dynamically tethered to or permanently grafted to the nanoparticle to produce polymer-functionalized nanoparticles. The surface mobility of polymer ligands with one end anchored to the nanoparticle can affect the surface pattern, but the effect remains unclear. Here, we addressed the influence of lateral polymer mobility on surface patterns by performing self-consistent field theory calculations on a modeled polymer-functionalized nanoparticle consisting of immobile and mobile brushes. The results show that except for the radius of nanoparticles and grafting density, the fraction of mobile brushes substantially influences the surface patterning of polymer-functionalized nanoparticles, including striped patterns and patchy patterns with various patches. The number of patches on a nanoparticle increases as the fraction of mobile brushes decreases, favored by the entropy of immobile brushes. Critically, we found that broken symmetry usually occurs in patchy nanoparticles, associated with the balance of enthalpic and entropic effects. The present work provides a fundamental understanding of the dependence of surface patterning on lateral polymer mobility. The work could also guide the preparation of diversified nanopatterns, especially for the asymmetric patchy nanoparticles, enabling the fundamental investigation of the interaction between polymer-functionalized nanoparticles. Full article
(This article belongs to the Special Issue Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications)
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15 pages, 7454 KiB  
Article
Investigation of the Functional Ageing of Conductive Coated Fabrics under Simulated Washing Conditions
by Christian Biermaier, Phillip Petz, Thomas Bechtold and Tung Pham
Materials 2023, 16(3), 912; https://doi.org/10.3390/ma16030912 - 18 Jan 2023
Cited by 5 | Viewed by 1390
Abstract
Conductive textiles play an important role in recent electronics development; however, one of the major challenges remains their machine-washing durability. For the investigation of the basic wash ageing mechanisms, we used copper-plated polyamide 66 and cellulose fabrics and developed a wet and dry [...] Read more.
Conductive textiles play an important role in recent electronics development; however, one of the major challenges remains their machine-washing durability. For the investigation of the basic wash ageing mechanisms, we used copper-plated polyamide 66 and cellulose fabrics and developed a wet and dry operable flex tester with online resistance recording. The evaluation was supported by abrasion tests, cyclic elongation tests and tribological investigation of dry and wet textile–textile friction. It was found that the contribution of mechanical and chemical ageing to wash ageing strongly depends on the substrate material. A bad adhesion of copper on polyamide 66 leads to early fatigue while better stability of the copper on cellulose leads to a stronger resistance against ageing. For both substrates, the delamination of the copper layer was the root cause of the fatigue, which is facilitated by the washing solution. Finally, a cumulative fatigue model was developed and the determination of the end of lifetime by the intended use is discussed. Full article
(This article belongs to the Special Issue Advanced Polymer-Coated Materials: Fabrication, Characterization and Applications)
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