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Multifunctional Polymer Composite Materials, 2nd Edition

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Composites and Nanocomposites".

Deadline for manuscript submissions: 30 September 2025 | Viewed by 557

Special Issue Editors


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Guest Editor
School of Mechanical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Gyeongbuk, Republic of Korea
Interests: vulcanization; rubber nanocomposites; energy harvesting; sensors and actuators; magnetorheological elastomers
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Special Issue Information

Dear Colleagues,

Multifunctional polymer composites are robustly engineered materials that exhibit two or more functional properties beyond basic structural support. These multifunctional aspects include mechanical toughness, electrical and thermal conductivity, self-healing, strain sensing, and energy harvesting. Integration of such multi-functionalities not only enhances the composite material's ability to respond to external stimuli, but also provides structural health, and adaptation to extreme environmental changes. The main components of polymer composites include polymer matrix, reinforcing fillers, and curatives. Here, the polymer matrix provides flexibility, lightweight, and the ability to respond to external mechanical stimuli. These polymer matrices can be elastomers, epoxy resin, polystyrene, and polyvinylidene fluoride. The reinforcing fillers enhance the structural and functional properties. Promising fillers include carbon black, carbon nanotubes, graphene, silica, MXenes and titanium dioxide. Finally, curatives especially for the rubber matrix from the elastomer family are added. These curatives not only help to further improve their mechanical properties but also make them effective for industrial applications. Finally, the interface between the polymer matrix and fillers must be optimized for efficient load transfer and functionality.

Keeping the above concepts in mind, this Special Issue is open to research based on polymer composites and a demonstration of their multi-functional abilities. Moreover, this Special Issue will collect the latest literature with motivated industrially oriented research related to polymer composite materials. Moreover, the versatile research and development activities for academia require further efforts directed towards the subject of this Special Issue. The key aspects summarizing the scope of this Special Issue include but are not limited to the following:

  • Development of multi-functional polymer composites.
  • Studies using polymer matrixes such as elastomers, thermoplastics, thermosets, etc.
  • Properties like mechanical, electrical, thermal, self-healing and self-cleaning mechanisms, bio-compatibility, and tribology, etc.
  • Improved interfaces through pristine and modification of fillers or a polymer matrix.
  • Three-dimensional and four-dimensional printing fabrication methods in polymer composites
  • Industrial applications like portable sensors, energy harvesting and storage, wearable sensors, self-powered generators, flexible electronics, etc.

Dr. Vineet Kumar
Dr. Md Najib Alam
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. 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.

Keywords

  • strain sensors
  • polymer composites
  • energy harvesting
  • carbon nanomaterials

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Published Papers (1 paper)

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Research

23 pages, 8937 KiB  
Article
Robust Composites Based on Silicone Rubber for Self-Powered Piezoelectric Nanogenerators
by Vineet Kumar, Md Najib Alam, Siraj Azam and Sang Shin Park
Polymers 2025, 17(7), 977; https://doi.org/10.3390/polym17070977 - 3 Apr 2025
Viewed by 315
Abstract
Obtaining robust power density through piezoelectric nanogenerators (PENGs) is very challenging. Challenges include achieving good mechanical stability, optimum stiffness, reasonable voltage generation, limited heat dissipation, and power density as needed. This work focused exactly on these areas, and hybrid filler emerged as a [...] Read more.
Obtaining robust power density through piezoelectric nanogenerators (PENGs) is very challenging. Challenges include achieving good mechanical stability, optimum stiffness, reasonable voltage generation, limited heat dissipation, and power density as needed. This work focused exactly on these areas, and hybrid filler emerged as a promising candidate among the composites studied. For example, hybrid fillers exhibited optimized properties suitable for self-powered engineering applications. The composites fabricated in this work were based on titanium oxide (TiO2), molybdenum disulfide (MoS2), and silicone rubber (SR) as a host matrix. The results showed that TiO2 represents a good reinforcing filler, while MoS2 exerts a lubricating effect, improving the composites’ mechanical strength and elongation at break. For example, the compressive modulus at 8 per hundred parts of rubber (phr) was 2.39 MPa (TiO2), 1.62 MPa (MoS2), and 2.1 MPa (hybrid filler). Similarly, the hysteresis loss at 5 phr was 20.09 J/m (TiO2), 21.56 J/m (MoS2), and 20.48 J/m (hybrid filler). Moreover, the elongation at break at 8 phr was 150% (TiO2), 194% (MoS2), and 170% (hybrid filler). In the same way, the electro-mechanical properties obtained were also robust. For example, the voltage output was ~22 mV (TiO2), ~35 mV (MoS2), and ~46 mV (hybrid filler). Moreover, the PENGs developed in this work generated power. For example, the power density was ~0.55 pW/cm2 (TiO2), ~1.03 pW/cm2 (MoS2), and ~1.56 pW/cm2 (hybrid filler). Finally, the piezoelectric coefficient of the PENGs was 40 pC/N (TiO2), 112 pC/N (MoS2), and 160 pC/N (hybrid filler). These materials have a promising role in energy harvesting through self-powered nanogenerators for portable electronic systems. Finally, the low-power PENGs developed provide cost-effective voltage and power management circuits. This allows these PENGs to contribute to sustainable and self-sufficient electronic systems like pacemaker implants. Full article
(This article belongs to the Special Issue Multifunctional Polymer Composite Materials, 2nd Edition)
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