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Advances in Polymer Nanocomposites: Fabrication, Characterization and Multifunctional Applications
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Advances in Polymer Nanocomposites: Fabrication, Characterization and Multifunctional Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Polymeric Materials".

Deadline for manuscript submissions: closed (10 March 2023) | Viewed by 4844

Special Issue Editors

Prof. Dr. Georgios C. Psarras

E-Mail Website
Guest Editor
Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, Greece
Interests: smart materials; polymer nanocomposites; polymers; nanodielectrics; dielectric behavior; conductivity; storing/retrieving energy; stimuli-responsive materials; piezoelectrics; ferroelectrics; pyroelectrics
Dr. Anastasios C. Patsidis

E-Mail Website
Guest Editor
Department of Materials Science, School of Natural Sciences, University of Patras, 26504 Patras, Greece
Interests: polymer nanocomposites; polymers; nanodielectrics; biocomposites; 3D printing; smart materials; dielectric behavior; conductivity; storing/retrieving energy; stimuli-responsive materials; piezoelectrics; ferroelectrics; pyroelectrics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymer nanocomposites are an important novel class of engineering materials in both everyday life and high-tech applications. The versality of the employed polymer matrices (thermoplastics, thermosets, elastomers, bio-polymers, polymer blends, etc.) and the reinforcing phases (inorganic/organic nanofibers, nanotubes, nanoparticles, 2D nanoinclusions, etc.) provides an enormous number of possible nanocomposites with properties which can be tailored or adjusted according to the applications’ specifications. 

Until recently, the selection of engineering materials was based on their properties and cost. At present, engineering materials should have the ability to respond in real time to a rapidly varying environment or control signal. Multifunctional materials combine various desirable properties in a single material or material system, exhibiting all necessary responses under different loading conditions at service. Mechanical sustainability, suitable thermal response, tunable electric conductivity, variable electric polarization and dielectric permittivity, magnetic properties, and thermally induced phase changes are parts of the overall multifunctional behavior.

This Special Issue on “Advances in Polymer Nanocomposites: Fabrication, Characterization and Multifunctional Applications” welcomes original research and review papers presenting experimental or theoretical/computational studies of all kinds of polymer-based nanocomposites. Design and fabrication, thermo-mechanical performance, fire retardants, biological systems, biomedical applications, electrical engineering devices, stimuli-responsive materials, smart materials, structure–properties relationships, polymer matrix nanocomposites and hybrids and all current and forthcoming applications comprise a short—and definitely not exhaustive—list of the possible subjects for this Special Issue.

Prof. Dr. Georgios C. Psarras
Dr. Anastasios C. Patsidis
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. Materials 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 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 nanocomposites
  • Hybrids
  • Thermo-mechanical response
  • Relaxations
  • Molecular mobility
  • Interfacial effects
  • Smart materials
  • Energy storage/harvesting
  • Glass to rubber transition
  • Crystallinity
  • Dielectric permittivity/dielectric loss
  • Insulation
  • Polarization
  • Conductivity mechanisms
  • Magnetic properties
  • Stimuli-responsive polymers
  • Multifunctional materials
  • Nanodielectrics
  • Energy materials

Published Papers (2 papers)

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Research

22 pages, 4966 KiB  
Article
Studies on PVP-Based Hydrogel Polymers as Dressing Materials with Prolonged Anticancer Drug Delivery Function
by Agnieszka Sobczak-Kupiec, Sonia Kudłacik-Kramarczyk, Anna Drabczyk, Karolina Cylka and Bozena Tyliszczak
Materials 2023, 16(6), 2468; https://doi.org/10.3390/ma16062468 - 20 Mar 2023
Cited by 4 | Viewed by 1895
Abstract
Tamoxifen is a well-known active substance with anticancer activity. Currently, many investigations are performed on the development of carriers that provide its effective delivery. Particular attention is directed toward the formation of cyclodextrin–drug complexes to provide prolonged drug delivery. According to our knowledge, [...] Read more.
Tamoxifen is a well-known active substance with anticancer activity. Currently, many investigations are performed on the development of carriers that provide its effective delivery. Particular attention is directed toward the formation of cyclodextrin–drug complexes to provide prolonged drug delivery. According to our knowledge, carriers in the form of polyvinylpyrrolidone (PVP)/gelatin-based hydrogels incorporated with β-cyclodextrin–tamoxifen complexes and additionally modified with nanogold have not been presented in the literature. In this work, two series of these materials have been synthesized—with tamoxifen and with its complex with β-cyclodextrin. The process of obtaining drug carrier systems consisted of several stages. Firstly, the nanogold suspension was obtained. Next, the hydrogels were prepared via photopolymerization. The size, dispersity and optical properties of nanogold as well as the swelling properties of hydrogels, their behavior in simulated physiological liquids and the impact of these liquids on their chemical structure were verified. The release profiles of tamoxifen from composites were also determined. The developed materials showed swelling capacity, stability in tested environments that did not affect their structure, and the ability to release drugs, while the release process was much more effective in acidic conditions than in alkaline ones. This is a benefit considering their use for anticancer drug delivery, due to the fact that near cancer cells, there is an acidic environment. In the case of the composites containing the drug–β-cyclodextrin complex, a prolonged release process was achieved compared to the drug release from materials with unbound tamoxifen. In terms of the properties and the composition, the developed materials show a great application potential as drug carriers, in particular as carriers of anticancer drugs such as tamoxifen. Full article
(This article belongs to the Special Issue Advances in Polymer Nanocomposites: Fabrication, Characterization and Multifunctional Applications)
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19 pages, 4022 KiB  
Article
Polymeric Orthosis with Electromagnetic Stimulator Controlled by Mobile Application for Bone Fracture Healing: Evaluation of Design Concepts for Medical Use
by Filipe Bueno Vilela, Eduardo Serafim Silva, Mirian de Lourdes Noronha Motta Melo, Rochelly Mariana Pedroso Oliveira, Patricia Capellato and Daniela Sachs
Materials 2022, 15(22), 8141; https://doi.org/10.3390/ma15228141 - 17 Nov 2022
Cited by 1 | Viewed by 2744
Abstract
Background: The occurrence of bone fractures is increasing worldwide, mainly due to the health problems that follow the aging population. The use of additive manufacturing and electrical stimulators can be applied for bioactive achievements in bone healing. However, such technologies are difficult to [...] Read more.
Background: The occurrence of bone fractures is increasing worldwide, mainly due to the health problems that follow the aging population. The use of additive manufacturing and electrical stimulators can be applied for bioactive achievements in bone healing. However, such technologies are difficult to be transferred to medical practice. This work aims to develop an orthosis with a combined magnetic field (CFM) electrostimulator that demonstrates concepts and design aspects that facilitate its use in a real scenario. Methods: A 3D-printed orthosis made of two meshes was manufactured using PLA for outer mechanical stabilization mesh and TPU for inner fixation mesh to avoid mobilization. A CFM stimulator of reduced dimension controlled by a mobile application was coupled onto the orthosis. The design concepts were evaluated by health professionals and their resistance to chemical agents commonly used in daily activities were tested. Their thermal, chemical and electrical properties were also characterized. Results: No degradation was observed after exposure to chemical agents. The CMF achieved proper intensity (20–40 µT). The thermal analysis indicated its appropriate use for being modelled during clinical assessment. Conclusion: An orthosis with a coupled electrostimulator that works with a combined magnetic field and is controlled by mobile application was developed, and it has advantageous characteristics when compared to traditional techniques for application in real medical environments. Full article
(This article belongs to the Special Issue Advances in Polymer Nanocomposites: Fabrication, Characterization and Multifunctional Applications)
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