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Science and Technology of Glassy Coatings
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Science and Technology of Glassy Coatings

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Surface Characterization, Deposition and Modification".

Deadline for manuscript submissions: closed (20 November 2022) | Viewed by 10765

Special Issue Editor

Dr. George D. Verros

E-Mail Website
Guest Editor
Department of Chemistry, Aristotle University of Thessaloniki, P.O. Box 454 Plagiari Thes., 57500 Epanomi, Greece
Interests: coatings; polymers; thermodynamics; simulations
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is dedicated to ‘Science and Technology of Glassy Coatings’. The aim is to bring together scientists working in technology of glassy coatings from several disciplines in order to further develop new methods and ideas.

The topics to be covered include (but are not limited to):

  • Polymers, metals, alloys, and composites
  • Novel materials
  • Synthesis and characterization
  • Thermodynamics and transport properties
  • Theory and simulations
  • Applications

Dr. George D。 Verros
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. Coatings 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 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.

Published Papers (4 papers)

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Research

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9 pages, 277 KiB  
Article
On the Validity of a Linearity Axiom in Diffusion and Heat Transfer
by Raj Kumar Arya, Devyani Thapliyal, George D. Verros, Neetu Singh, Dhananjay Singh, Rahul Kumar, Rajesh Kumar Srivastava and Anurag Kumar Tiwari
Coatings 2022, 12(10), 1582; https://0-doi-org.brum.beds.ac.uk/10.3390/coatings12101582 - 19 Oct 2022
Viewed by 1449
Abstract
In this work, the linearity axiom of irreversible thermodynamics for diffusion and heat transfer has been re-examined. It is shown that this axiom is compatible with the entropy production invariance principle with respect to a reference quantity for diffusion and heat transfer in [...] Read more.
In this work, the linearity axiom of irreversible thermodynamics for diffusion and heat transfer has been re-examined. It is shown that this axiom is compatible with the entropy production invariance principle with respect to a reference quantity for diffusion and heat transfer in the Euclidean space. Moreover, the underlying relations of the other principles of irreversible thermodynamics for multi-component diffusion and heat transfer, such as the quasi-equilibrium and the Onsager reciprocal relations (ORR) with the entropy production invariance, are re-examined. It was shown that the linearity principle postulates for diffusion and heat transfer and could be directly derived from the entropy production invariance axiom. It is believed that this work could not only be used for the drying of polymer coatings but also for pedagogical purposes. It may also be generalized; thus, leading to a generalized framework for irreversible thermodynamics. Full article
(This article belongs to the Special Issue Science and Technology of Glassy Coatings)
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15 pages, 1728 KiB  
Article
Polymerisation Kinetics on FT-IR and Colorimetric Changes under UV Irradiation for a Commercial Polycyanoacrylate Adhesive, Addressed to Glass Restoration
by Evangelia C. Vouvoudi, Panagiotis D. Morfis, George D. Verros and Dimitris S. Achilias
Coatings 2022, 12(4), 490; https://0-doi-org.brum.beds.ac.uk/10.3390/coatings12040490 - 06 Apr 2022
Cited by 1 | Viewed by 2108
Abstract
This study evaluates a commercial polycyanoacrylate adhesive of medium viscosity regarding its suitability for the restoration of glass objects of cultural heritage in a museum environment (exhibition/storage). Loctite® Super Attak was investigated in terms of (a) its polymerisation rate and degree of [...] Read more.
This study evaluates a commercial polycyanoacrylate adhesive of medium viscosity regarding its suitability for the restoration of glass objects of cultural heritage in a museum environment (exhibition/storage). Loctite® Super Attak was investigated in terms of (a) its polymerisation rate and degree of conversion, using Infrared Spectroscopy FT-IR by monitoring the change of the C=C peak vs. C=O peak and (b) the alteration of the colour parameters of its films after its submission to UVC irradiation for several time intervals. It was confirmed that within 6 h, a thin-layered adhesive film acquires 80–85% of its polymerization in ambient conditions, while the reaction continues for up to 12–18 h in the conditions examined. The progress of the reaction is slower when the adhesive is in a protected environment. On the other hand, the effect of UVC rays on the glue is destructive and oxidative, provoking a yellow shade/colour from the first hours of exposure. The intensity of the yellowness becomes higher after 6 h of exposure, showing shifts in the absorption peaks of C–O/C=O groups of the initial IR spectrum and the augmentation of –OH absorptions. It was concluded that the adhesive is suitable for glass restoration, especially for instant, rapid, applications, under mild conditions of maintenance and exposure. Full article
(This article belongs to the Special Issue Science and Technology of Glassy Coatings)
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14 pages, 2338 KiB  
Article
Modeling of Surfactant-Enhanced Drying of Poly(styrene)-p-xylene Polymeric Coatings Using Machine Learning Technique
by Raj Kumar Arya, Jyoti Sharma, Rahul Shrivastava, Devyani Thapliyal and George D. Verros
Coatings 2021, 11(12), 1529; https://0-doi-org.brum.beds.ac.uk/10.3390/coatings11121529 - 12 Dec 2021
Cited by 1 | Viewed by 2078
Abstract
In this work, a machine learning technique based on a regression tree model was used to model the surfactant enhanced drying of poly(styrene)-p-xylene coatings. The predictions of the developed model based on regression trees are in excellent agreement with the experimental [...] Read more.
In this work, a machine learning technique based on a regression tree model was used to model the surfactant enhanced drying of poly(styrene)-p-xylene coatings. The predictions of the developed model based on regression trees are in excellent agreement with the experimental data. A total of 16,258 samples were obtained through experimentation. These samples were separated into two parts: 12,960 samples were used for the training of the regression tree, and the remaining 3298 samples were used to test the tree’s prediction accuracy. MATLAB software was used to grow the regression tree. The mean squared error between the model-predicted values and actual outputs was calculated to be 8.8415 × 10−6. This model has good generalizing ability; predicts weight loss for given values of time, thickness, and triphenyl phosphate; and has a maximum error of 1%. It is robust and for this system, can be used for any composition and thickness for this system, which will drastically reduce the need for further experimentations to explain diffusion and drying. Full article
(This article belongs to the Special Issue Science and Technology of Glassy Coatings)
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Review

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37 pages, 10964 KiB  
Review
Glassy Polymers—Diffusion, Sorption, Ageing and Applications
by Raj Kumar Arya, Devyani Thapliyal, Jyoti Sharma and George D. Verros
Coatings 2021, 11(9), 1049; https://0-doi-org.brum.beds.ac.uk/10.3390/coatings11091049 - 30 Aug 2021
Cited by 15 | Viewed by 4128
Abstract
For the past few decades, researchers have been intrigued by glassy polymers, which have applications ranging from gas separations to corrosion protection to drug delivery systems. The techniques employed to examine the sorption and diffusion of small molecules in glassy polymers are the [...] Read more.
For the past few decades, researchers have been intrigued by glassy polymers, which have applications ranging from gas separations to corrosion protection to drug delivery systems. The techniques employed to examine the sorption and diffusion of small molecules in glassy polymers are the subject of this review. Diffusion models in glassy polymers are regulated by Fickian and non-Fickian diffusion, with non-Fickian diffusion being more prevalent. The characteristics of glassy polymers are determined by sorption isotherms, and different models have been proposed in the literature to explain sorption in glassy polymers over the last few years. This review also includes the applications of glassy polymers. Despite having many applications, current researchers still have difficulty in implementing coating challenges due to issues such as physical ageing, brittleness, etc., which are briefly discussed in the review. Full article
(This article belongs to the Special Issue Science and Technology of Glassy Coatings)
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