Mechanical Properties of Polymer Composites: Progress and Prospects

Dear Colleagues,

Polymer-based composites have become indispensable modern structural and functional materials due to their lightweight nature, high strength-to-weight ratio, chemical resistance, and exceptional design flexibility. As these materials are increasingly deployed under challenging loading conditions and severe operational environments, a deep, multiscale understanding of their mechanical behavior is crucial for both theoretical innovation and industrial application. This Special Issue, "Mechanical Properties of Polymer Composites: Progress and Prospects," gathers cutting-edge research and comprehensive reviews on the fundamental mechanics, advanced characterization, and innovative engineering applications of synthetic, bio-based, and composite polymers.

Understanding mechanical performance requires bridging the gap between molecular architecture, microstructure, processing techniques, and macro-scale structural response. This Special Issue will focus on several key areas:

• The effect of interface on mechanical properties: Mechanical properties of fiber-reinforced polymer composites, characterization of mechanical properties of nanoparticle-modified polymer composites, mechanical properties of polymer blend composites, and the influence of particle, fiber or interphase interface effects on the mechanical properties of composite materials.
• Deformation, fracture, and fatigue: Fundamental insights into elasticity, plasticity,  viscoelasticity, yield phenomena, micro-cracking, crack initiation/propagation, and long-term fatigue under cyclic or impact loading.
• Multiscale modeling and simulation: Molecular dynamics (MD), finite element analysis (FEA), phase field modeling and physics-informed machine learning models that predict mechanical behavior across temporal and spatial scales.
• Advanced characterization techniques: In situ testing, digital image correlation (DIC), nanoindentation, thermography and non-destructive evaluation methods to probe local and global stress–strain distributions.
• Extreme and dynamic environments: Performance evaluation under elevated/cryogenic temperatures, high strain rates, corrosive media, and environmental degradation (e.g., UV, hygrothermal aging).
• High-performance and smart polymers: Mechanical optimization of fiber-reinforced composites, self-healing networks, 3D/4D-printed cellular architectures, and bio-inspired mechanical structures.

By integrating mechanical design with macromolecular chemistry and processing science, this Special Issue serves as a valuable reference for materials scientists, mechanical engineers, and industry specialists. By collecting these works, we aim to accelerate the design of next-generation, high-durability polymer composite systems, fostering safer, lighter, and more sustainable engineering solutions.

Dr. Behzad Vasheghani Farahani
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 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-anonymized 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 2700 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.