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J. Compos. Sci.
Special Issues
Mechanical Behaviour of Composite Materials for Biomedical Applications
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Mechanical Behaviour of Composite Materials for Biomedical Applications

A special issue of Journal of Composites Science (ISSN 2504-477X). This special issue belongs to the section "Composites Applications".

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 3142

Special Issue Editors

Dr. Maria Augusta Neto

E-Mail Website
Guest Editor
Mechanical Engineering Department, University of Coimbra, 3030-788 Coimbra, Portugal
Interests: materials; biomechanics; computational mechanics; multibody systems; optimization; microstructural behaviour of materials
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Ana Paula Piedade

E-Mail Website
Guest Editor
Department of Mechanical Engineering, University of Coimbra, 3030-788 Coimbra, Portugal
Interests: processing technologies; additive manufacturing; biotic/abiotic interface; biomedical devices; cellular compatibility
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The 3D print technology is expanding daily, and when it is used in the medical industry, it has excellent potential to help prolong and save lives. For instance, it's possible to reproduce customized organs and prosthetics for patients. Hence, these printed objects can be used for research and the development of prototypes. There are also 3d printer prostheses in orthodontics and dentistry. All these trends are expected to grow in the following years and beyond. Hence, this special issue intends to contribute to the publication of reports containing interchangeable original and substantial findings wherein the mechanical behavior of “new materials” is used to explore biological problems.

Numerical/Analytical, as well as experimental papers, may be submitted for a wide range of topics in biomechanics, including, but not limited to:

Cardiovascular and Respiratory Biomechanics—Mechanics of blood-flow, air-flow, mechanics of the soft tissues, flow-tissue or flow-prosthesis interactions;

Dental Biomechanics—Design and analysis of dental tissues and prostheses, mechanics of chewing;

Tissue Engineering—The role of biomechanical factors in engineered tissue replacements and regenerative medicine;

Injury Biomechanics—Mechanics of impact and trauma;

Orthopedic Biomechanics—Mechanics of bone fracture, mechanics of implants and implant fixation, mechanics of bones and joints, wear of natural and artificial joints;

Rehabilitation Biomechanics - mechanics of prosthetics and orthotics.

Dr. Maria Augusta Neto
Prof. Dr. Ana Paula Piedade
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 250 words) can be sent to the Editorial Office for assessment.

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. Journal of Composites Science 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

  • biomechanics
  • biomaterials
  • 3D printed materials
  • experimental tests
  • numerical models
  • tissue engineering
  • mechanical behavior

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Published Papers (2 papers)

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Research

25 pages, 2808 KB  
Article
Patterns of Degradation of Binary Mixtures of Ultrafine Fibers Based on Poly-(3-Hydroxybutyrate) and Polyvinylpyrrolidone Under the Action of Ozonolysis
by Svetlana G. Karpova, Anatoly A. Olkhov, Ekaterina P. Dodina, Ivetta A. Varyan, Yulia K. Lukanina, Natalia G. Shilkina, Valery S. Markin, Anatoly A. Popov, Alexandr V. Shchegolkov and Aleksei V. Shchegolkov
J. Compos. Sci. 2026, 10(2), 73; https://doi.org/10.3390/jcs10020073 (registering DOI) - 1 Feb 2026
Abstract
To obtain data on the effects of ozonolysis on the structural and dynamic parameters of ultrafine fibers based on the binary compositions of poly-(3-hydroxybutyrate) (PHB) and polyvinylpyrrolidone (PVP) with varying ratios of polymer components ranging from 0/100 to 100/0 mass%, produced by electrospinning, [...] Read more.
To obtain data on the effects of ozonolysis on the structural and dynamic parameters of ultrafine fibers based on the binary compositions of poly-(3-hydroxybutyrate) (PHB) and polyvinylpyrrolidone (PVP) with varying ratios of polymer components ranging from 0/100 to 100/0 mass%, produced by electrospinning, a study was conducted. The morphology and structural–dynamic characteristics of the ultrafine fibers were examined. Comprehensive research was carried out, combining thermophysical measurements (DSC), dynamic measurements using an electron paramagnetic resonance (EPR) technique, scanning electron microscopy, and infrared spectroscopy. The influence of the mixture’s composition and ozonolysis on the degree of crystallinity of PHB and the molecular mobility of the TEMPO radical (tetramethylpiperidine-1-oxyl) in the amorphous regions of the PHB/PVP fiber material was demonstrated. The low-temperature maximum on the DSC thermograms provided information about the fraction of hydrogen bonds in the mixed compositions, allowing for the enthalpy of thermal destruction of these bonds in both the original and oxidized samples to be determined. The study showed significant changes in the degree of crystallinity of PHB, the enthalpy of hydrogen bond destruction, molecular mobility, moisture absorption of the compositions, and the activation energy of rotational diffusion in the amorphous regions of the PHB/PVP mixed compositions. It was established that within the 50/50% PHB/PVP ratio, an inversion transition occurs from the dispersion material to the dispersion medium. Ozonolysis induces a sharp change in the material’s structure. The conducted research provided the first opportunity to assess the impact of ozonolysis on the structural and dynamic characteristics of PHB/PVP ultrafine fibers at a molecular level. These materials may serve as a therapeutic system for controlled drug delivery. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Composite Materials for Biomedical Applications)
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12 pages, 6585 KB  
Article
Microtensile Bond Strength of Composite Restorations: Direct vs. Semi-Direct Technique Using the Same Adhesive System
by Paulo J. Palma, Maria A. Neto, Ana Messias and Ana M. Amaro
J. Compos. Sci. 2025, 9(5), 203; https://doi.org/10.3390/jcs9050203 - 24 Apr 2025
Cited by 2 | Viewed by 2467
Abstract
The main purpose was to evaluate the in vitro adhesion strength of direct and semi-direct composite resin restorations in dentin, when the same adhesive system is applied, using microtensile testing (μTBS) and to observe the most recurrent types of failure in the different [...] Read more.
The main purpose was to evaluate the in vitro adhesion strength of direct and semi-direct composite resin restorations in dentin, when the same adhesive system is applied, using microtensile testing (μTBS) and to observe the most recurrent types of failure in the different groups. For this study, 16 intact human mandibular molars without microscopic evidence of lesions were randomly divided into two test groups, according to the restoration strategy: direct restoration (DR) and semi-direct restoration (SR). For both restorative strategies, the same adhesive system (Clearfil SE Bond 2, Kuraray, Tokyo, Japan) was applied to the dentin surface using a two-step self-etching approach with no prior conditioning of the dentin, and the same composite resin (Ceram. x Sepctra ST HV, Dentsply Sirona, Charlotte, NC, USA) was used as a restorative material. The indirect restoration was cemented using resin cement (Variolink Esthetic LC, Ivoclar Vivadent, Schaan, Liechtenstein) within the interior side of the restoration. Each specimen was sliced into sections measuring approximately 1 mm2. The rods were then subjected to a microtensile bond strength test and the statistical analysis on the differences in μTBS between the groups were determined with the Mann–Whitney test. The surfaces were examined to determine the failure mode. The Chi-Square test was used to determine the association between the type of restoration and the failure mode. The DR group presented with a mean μTBS of 38.15 ± 10.75 MPa and a predominance of cohesive failures in the composite resin (69.5%). The SR group showed a mean μTBS of 25.45 ± 10.19 MPa and a predominance of adhesive failures (92.3%). There was not only a statistically significant difference in the adhesive strength of the DR and SR groups (p < 0.001), but also a statistically significant association between the type of restorative strategy and failure mode (p < 0.001). Even though Clearfil SE Bond 2 provided acceptable adhesion to the dentin, using the same two-step self-etch adhesive system, lower adhesive strength and more adhesive failures are expected in semi-direct restorations when compared to direct restorations. Full article
(This article belongs to the Special Issue Mechanical Behaviour of Composite Materials for Biomedical Applications)
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