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Phase Transitions in Polymer Composites

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: 20 July 2026 | Viewed by 869

Special Issue Editors


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Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
Interests: coarse-grained modelling; AI-aided material design; bio-inspired nanocomposites
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
Interests: composite materials; mechanical behavior of materials
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 201804, China
Interests: interfacial bonding; mechanical behavior; manufacturing; nanocomposites; interlaminar toughening; failure analysis; 3D printing
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymer composites have gained significant attention due to their tunable properties, multifunctionality, and broad applications in industries, such as aerospace, automotive, biomedical, and electronics. Understanding phase transitions in these materials is crucial for the optimization of their mechanical, thermal, and electrical performance. Phase transitions, including crystallization, glass transition, melting, and phase separation, play a vital role in defining the structural integrity and functionality of polymer composites under varying environmental conditions.

This Special Issue aims to explore recent advances in phase transitions of polymer composites, focusing on experimental, theoretical, and computational approaches. Key topics of interest include, but are not limited to:

  • Crystallization behavior and kinetics in polymer matrix composites;
  • Thermally and pressure-induced phase transitions in hybrid materials;
  • Phase separation mechanisms in polymer blends and nanocomposites;
  • The influence of fillers and reinforcements on phase transition behavior;
  • Dynamic mechanical analysis of phase transition processes;
  • Molecular dynamics and machine learning approaches to predict phase transitions;
  • Applications of phase transition studies in functional materials, sensors, and energy storage.

Contributions covering fundamental studies, novel characterization techniques, and applications of phase transitions in polymer composites are welcome. This Special Issue provides a platform for researchers to advance the understanding of phase behavior and develop next-generation polymer composites with tailored properties for emerging applications.

Dr. Ning Liu
Prof. Dr. Bin Yang
Dr. Zhongsen Zhang
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. Applied Sciences 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 2400 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

  • phase transition
  • molecular dynamics
  • multifunctional polymer composites
  • polymer interphase
  • machanine learning

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Published Papers (1 paper)

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Research

13 pages, 8153 KB  
Article
The Effect of Overlap Distance on the Strength and Toughness of “Brick-Mortar” Graphene–Polyethylene Nanocomposites: Competition Between Tension and Shear in the Polymer Phase
by Ning Liu, Ke Huang, Zhongsen Zhang, Dongdong Xu and Lihua Wang
Appl. Sci. 2025, 15(19), 10343; https://doi.org/10.3390/app151910343 - 24 Sep 2025
Viewed by 574
Abstract
This study employs coarse-grained molecular dynamics simulations to investigate how the overlap distance between graphene nanosheets influences the mechanical properties of “brick-mortar”-structured graphene–polyethylene nanocomposites. Simulations are conducted in a fixed box size while varying the overlap distance from 2.4 to 24 nm. The [...] Read more.
This study employs coarse-grained molecular dynamics simulations to investigate how the overlap distance between graphene nanosheets influences the mechanical properties of “brick-mortar”-structured graphene–polyethylene nanocomposites. Simulations are conducted in a fixed box size while varying the overlap distance from 2.4 to 24 nm. The stress–strain response exhibits three distinct stages: elastic increase, plastic plateau, and slow decrease. The yield strength increases nearly linearly from 115.3 ± 3.8 to 347.9 ± 33.0 MPa with increasing overlap distance, a trend well captured by an extended shear-lag model incorporating polymer stretch. The critical failure strain, marking the onset of strain localization, first increases and then decreases, peaking at an overlap distance of 4.8 nm. This non-monotonic behavior is attributed to a competition between polymer stretch and polymer shear in interfacial stress transfer. Similarly, the plateau stress and toughness show two-stage evolution: the plateau stress remains constant (~100 MPa) up to 4.8 nm before increasing significantly, while toughness rises from 16.9 ± 0.2 to 51.0 ± 4.0 MJ/m3 across the range. These findings reveal the nanoscale mechanisms behind strength and toughness in bioinspired nanocomposites and provide guidelines for optimizing performance through overlap distance tuning. Full article
(This article belongs to the Special Issue Phase Transitions in Polymer Composites)
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