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Advances in Polymer Composites, Coatings and Adhesive Materials
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Advances in Polymer Composites, Coatings and Adhesive Materials

A special issue of Coatings (ISSN 2079-6412). This special issue belongs to the section "Functional Polymer Coatings and Films".

Deadline for manuscript submissions: 25 February 2026 | Viewed by 2606

Special Issue Editors

Dr. Paulina Bednarczyk

E-Mail Website
Guest Editor
Department of Chemical and Process Engineering, Faculty of Chemical Technology and Engineering, West Pomeranian University of Technology in Szczecin, Piastów Ave. 42, 71-065 Szczecin, Poland
Interests: polymer composite; coatings; photopolymerization; urethane acrylates; epoxy acrylates; oligomers; acrylic monomers; pressure-sensitive adhesives; medical patches
Special Issues, Collections and Topics in MDPI journals
Dr. Alicja Balcerak-Woźniak

E-Mail Website
Guest Editor
Department of Organic Chemistry, Faculty of Chemical Technology and Engineering, Bydgoszcz University of Science and Technology, Seminaryjna 3, 85-326 Bydgoszcz, Poland
Interests: organic synthesis; photochemistry; photoinitiating systems; photopolymerization; polymer materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The development of new polymer composite materials, coatings, and adhesive materials with desired properties is currently of great scientific and practical importance. In the era of the development of artificial intelligence, designing new oligomers and monomers for the production of functional materials often comes down to using modern techniques and giving these types of materials intelligent functions, e.g., response to external stimuli. Functionalization by introducing modifications at the molecular level or as a result of physical modification can lead to the replacement of other materials and use in many industrial fields.

We welcome the submission of research and review articles that focus on the development of new polymer materials, i.e., composites, coatings, and other adhesive materials.

Submissions to this Special Issue of Coatings, entitled “Advances in Polymer Composites, Coatings and Adhesive Materials”, are welcomed.

Dr. Paulina Bednarczyk
Dr. Alicja Balcerak-Woźniak
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. 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.

Keywords

  • polymer composites
  • coatings
  • adhesive materials
  • oligomers
  • monomers

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

20 pages, 4439 KiB  
Article
Predicting UV-Vis Spectra of Benzothio/Dithiophene Polymers for Photodetectors by Machine-Learning-Assisted Computational Studies
by Abrar U. Hassan and Mamduh J. Aljaafreh
Coatings 2025, 15(5), 558; https://doi.org/10.3390/coatings15050558 - 7 May 2025
Viewed by 194
Abstract
The current study represents a machine-learning (ML)-assisted reverse polymer engineering for the rational design of high-performance benzothiophene (BT) benzodithiophene (BDT) polymers for photodetector applications. By integrating their 5617 units with various acceptor moieties, a total of 72,976 unique polymer combinations are generated. The [...] Read more.
The current study represents a machine-learning (ML)-assisted reverse polymer engineering for the rational design of high-performance benzothiophene (BT) benzodithiophene (BDT) polymers for photodetector applications. By integrating their 5617 units with various acceptor moieties, a total of 72,976 unique polymer combinations are generated. The optical properties of these polymers are predicted with high accuracy (R2 = 0.86) using a Gradient-Boosting Regression (GBR) model. The SHAP value-based feature importance analysis indicates that Chi0 is the most influential factor in predicting the absorption maxima (λmax) of polymers, followed by LabuteASA, Chi0V, Chi1, SlogP_VSA12, and other molecular descriptors. The robustness of the employed model is further validated through K-Fold cross-validation, with the highest mean squared error (MSE) observed at 2.02 in the fold-2 subset. The designed polymers exhibit λmax within the range of 400–750 nm, demonstrating their suitability for photodetector applications. Moreover, a Transformer-Assisted Orientation (TAO) approach is employed to optimize polymer design, successfully achieving bandgaps as low as 0.42 eV. This approach facilitates the rapid design and optimization of high-performance polymers with tailored electronic properties, effectively addressing the limitations of conventional trial-and-error methods. The current ML-assisted approach presents a promising strategy for expediting the development of high-performance photodetectors and other advanced optoelectronic devices. Full article
(This article belongs to the Special Issue Advances in Polymer Composites, Coatings and Adhesive Materials)
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24 pages, 18456 KiB  
Article
Influence of Post-Printing Polymerization Time on Flexural Strength and Microhardness of 3D Printed Resin Composite
by Shaima Alharbi, Abdulrahman Alshabib, Hamad Algamaiah, Muath Aldosari and Abdullah Alayad
Coatings 2025, 15(2), 230; https://doi.org/10.3390/coatings15020230 - 14 Feb 2025
Viewed by 998
Abstract
Background: The adoption of 3D printing in restorative dentistry is increasing, with the post-curing duration of a material being identified as a key determinant of its performance. This study evaluated the effect of the post-polymerization time on the flexural strength (FS) and Vickers [...] Read more.
Background: The adoption of 3D printing in restorative dentistry is increasing, with the post-curing duration of a material being identified as a key determinant of its performance. This study evaluated the effect of the post-polymerization time on the flexural strength (FS) and Vickers microhardness (VHN) of a 3D-printed composite. Methods: Specimens of Formlabs Permanent Crown Resin were 3D printed and divided into four groups according to their post-curing time: no post-curing time and 20, 40, and 60 min post-curing time. Flexural strength testing was carried out using a three-point test of 40 bar-shaped specimens (n = 10/group), followed by fractography observations under a scanning electron microscope (SEM). Vicker microhardness testing was also conducted with 40 disk-shaped specimens (n = 10/group). The inorganic filler content was measured using the ash method, and the filler morphology was characterized under an SEM. Statistical analyses were performed using adjusted ANOVA and regression tests. Results: The highest median FS values were observed at 40 min post-curing (133.07 MPa), with significant differences across all groups (p < 0.0001). The highest median VHN values were found at 40 min post-curing (32.09 VHN), with significant differences between groups (p < 0.0001). A significant positive correlation (rho = 0.7488; p < 0.0001) was found between the flexural strength and Vickers hardness with changing post-curing durations. The 3D resin composite had an average filler content of 66.82% based on weight. Conclusions: With the limitation of the current in vitro setup, a post-polymerization time of 40 min was shown to lead to the best material performance. The post-printing polymerization time significantly affects the Vickers hardness and FS of 3D Formlabs Permanent Crown Resin. Further research should explore the effects of different resin compositions, clinical conditions, and curing protocols to enhance the general applicability of these findings. Clinical implications: Extending the post-printing polymerization time does not inherently result in improved material properties. A considered adjustment of the post-curing time can significantly impact the mechanical properties of a 3D-printed composite. Full article
(This article belongs to the Special Issue Advances in Polymer Composites, Coatings and Adhesive Materials)
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13 pages, 2975 KiB  
Article
Impact of Carbon Fiber Content and Length on the Rheological Properties and Coating Performance for Lost Foam Casting
by Guojin Sun, Linqian Xu and Qi Wang
Coatings 2024, 14(8), 1061; https://doi.org/10.3390/coatings14081061 - 19 Aug 2024
Viewed by 1001
Abstract
This study explores the impact of carbon fiber length and content on the rheological properties and performance of coatings used in lost foam casting. The investigation encompassed fiber lengths of 1 mm, 3 mm, and 6 mm and fiber contents of 0.2%, 0.5%, [...] Read more.
This study explores the impact of carbon fiber length and content on the rheological properties and performance of coatings used in lost foam casting. The investigation encompassed fiber lengths of 1 mm, 3 mm, and 6 mm and fiber contents of 0.2%, 0.5%, and 0.8%. The effects on coating viscosity, shear stress, coating weight, and surface morphology were meticulously evaluated. The results demonstrate that incorporating carbon fibers significantly enhances coating viscosity and shear stress compared to fiber-free coatings, with more pronounced effects observed at higher fiber contents and longer fiber lengths. Nevertheless, excessive fiber contents and lengths can lead to agglomeration, negatively impacting coating uniformity. The optimal fiber length and content were identified, striking a balance between improved rheological properties and coating performance. These findings provide critical insights for the development and industrial application of high-performance coatings in lost foam casting. Full article
(This article belongs to the Special Issue Advances in Polymer Composites, Coatings and Adhesive Materials)
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