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Molecules
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New Trends in Polymer-Based Materials
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New Trends in Polymer-Based Materials

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Bioorganic Chemistry".

Deadline for manuscript submissions: closed (20 December 2022) | Viewed by 5421

Special Issue Editors

Dr. Mariana Pinteala

E-Mail Website
Guest Editor
Centre of Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni Institute of Macromolecular Chemistry, 700487 Iasi, Romania
Interests: development of new polymer-based materials; supramolecular (co)polymers; polymer-functionalized nanoparticles; interpolymer complexes between hydrophobic–hydrophilic copolymers; blends and networks containing silicon-based polymers; aggregation of block copolymers in solution by fluorescence; synthesis and characterization of polymers and copolymers (especially siloxane-containing block copolymers); cationic, anionic, and radical copolymerization; structure–property relationship evaluation, data analysis, and interpretation; biopolymer-based nanocomposites for biomedical applications; dynamic polymeric matrixes for tissue engineering; antifungal nanotherapeutics; focal gene and drug delivery systems; ESR spectroscopy
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Marc J.M. Abadie

E-Mail Website1 Website2
Guest Editor
1. Institute Charles Gerhardt Montpellier—Aggregates, Interfaces & Materials for Energy (ICGM, UMR CNRS 5253), Bat 15, CC 1052, University of Montpellier, 34095 Montpellier, CEDEX 5, France
2. Centre of Advanced Research in Bionanoconjugates and Biopolymers, Petru Poni Institute of Macromolecular Chemistry, 700487 Iasi, Romania
Interests: high-temperature polymers; high-performance materials; composites and nanocomposites; photochemistry; UV curing; biomaterials; green chemistry; eco-friendly polymers; supramolecular chemistry; oxidative degradation

Special Issue Information

Dear Colleagues,

Since their discovery and development, polymers, ranging from domestic and engineering polymers to high-performance polymers, have been used in all industrial sectors. Polymers have a broad range of applications in the automotive, aeronautics, and microelectronics industries and have recently attracted the interest of the biomedical industry.

For this Special Issue, we have selected a series of articles by authors who are recognized for their research in various high-tech fields and who have developed new materials. A large part of this Special Issue will be devoted to supramolecular chemistry and its biomedical applications.

Dr. Mariana Pinteala
Prof. Dr. Marc J.M. Abadie
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. Molecules 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

  • coordination polymers (MOFs, MNPs)
  • semiconducting polymers
  • inorganic nanoparticles and nanotube-based WS2 (MoS2)
  • new membranes for PEMFCs
  • supramolecular chemistry
  • gene therapy
  • tissue engineering
  • drug delivery
  • biomaterial-based chitosan
  • magnetic nanoparticles
  • ionic transport
  • modeling of biological matter

Published Papers (3 papers)

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Research

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16 pages, 3435 KiB  
Article
Xanthan-Based Materials as a Platform for Heparin Delivery
by Narcis Anghel, Irina Apostol, Maria Valentina Dinu, Cristina Daniela Dimitriu, Iuliana Spiridon and Liliana Verestiuc
Molecules 2023, 28(6), 2757; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules28062757 - 18 Mar 2023
Cited by 1 | Viewed by 1126
Abstract
Heparin (Hep), with its anticoagulant activity, antiangiogenic and apoptotic effects, and growth factor binding, plays an important role in various biological processes. Formulations as drug delivery systems protect its biological activity, and limit the potential side effects of faulty administration. The objective of [...] Read more.
Heparin (Hep), with its anticoagulant activity, antiangiogenic and apoptotic effects, and growth factor binding, plays an important role in various biological processes. Formulations as drug delivery systems protect its biological activity, and limit the potential side effects of faulty administration. The objective of this study was to develop novel xanthan-based materials as a delivery carrier for heparin. The materials exhibited remarkable elastic behavior and toughness without any crack development within the network, which also support their application for tissue engineering. It was found that all materials possessed the ability to control the release of heparin, according to the Korsmeyer–Peppas release model. All Hep-containing materials caused significant exchanges of the activated partial thromboplastin time (aPTT) and prothrombin time (PT) parameters, indicating that formulated natural/natural synthetic polymeric networks conserved heparin’s biological activity and its ability to interrupt the blood coagulation cascade. The obtained results confirmed that developed materials could be carriers for the controlled release of heparin, with potential applications in topical administration. Full article
(This article belongs to the Special Issue New Trends in Polymer-Based Materials)
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22 pages, 4452 KiB  
Article
All-Polymer Piezo-Composites for Scalable Energy Harvesting and Sensing Devices
by George-Theodor Stiubianu, Adrian Bele, Alexandra Bargan, Violeta Otilia Potolinca, Mihai Asandulesa, Codrin Tugui, Vasile Tiron, Corneliu Hamciuc, Mihaela Dascalu and Maria Cazacu
Molecules 2022, 27(23), 8524; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules27238524 - 03 Dec 2022
Cited by 1 | Viewed by 1192
Abstract
Silicone elastomer composites with piezoelectric properties, conferred by incorporated polyimide copolymers, with pressure sensors similar to human skin and kinetic energy harvester capabilities, were developed as thin film (<100 micron thick) layered architecture. They are based on polymer materials which can be produced [...] Read more.
Silicone elastomer composites with piezoelectric properties, conferred by incorporated polyimide copolymers, with pressure sensors similar to human skin and kinetic energy harvester capabilities, were developed as thin film (<100 micron thick) layered architecture. They are based on polymer materials which can be produced in industrial amounts and are scalable for large areas (m2). The piezoelectric properties of the tested materials were determined using a dynamic mode of piezoelectric force microscopy. These composite materials bring together polydimethylsiloxane polymers with customized poly(siloxane-imide) copolymers (2–20 wt% relative to siloxanes), with siloxane segments inserted into the structure to ensure the compatibility of the components. The morphology of the materials as free-standing films was studied by SEM and AFM, revealing separated phases for higher polyimide concentration (10, 20 wt%). The composites show dielectric behavior with a low loss (<10−1) and a relative permittivity superior (3–4) to pure siloxane within a 0.1–106 Hz range. The composite in the form of a thin film can generate up to 750 mV under contact with a 30 g steel ball dropped from 10 cm high. This capability to convert a pressure signal into a direct current for the tested device has potential for applications in self-powered sensors and kinetic energy-harvesting applications. Furthermore, the materials preserve the known electromechanical properties of pure polysiloxane, with lateral strain actuation values of up to 6.2% at 28.9 V/μm. Full article
(This article belongs to the Special Issue New Trends in Polymer-Based Materials)
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Review

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17 pages, 375 KiB  
Review
Dextran Formulations as Effective Delivery Systems of Therapeutic Agents
by Anca Roxana Petrovici, Mariana Pinteala and Natalia Simionescu
Molecules 2023, 28(3), 1086; https://0-doi-org.brum.beds.ac.uk/10.3390/molecules28031086 - 21 Jan 2023
Cited by 11 | Viewed by 2093
Abstract
Dextran is by far one of the most interesting non-toxic, bio-compatible macromolecules, an exopolysaccharide biosynthesized by lactic acid bacteria. It has been extensively used as a major component in many types of drug-delivery systems (DDS), which can be submitted to the next in-vivo [...] Read more.
Dextran is by far one of the most interesting non-toxic, bio-compatible macromolecules, an exopolysaccharide biosynthesized by lactic acid bacteria. It has been extensively used as a major component in many types of drug-delivery systems (DDS), which can be submitted to the next in-vivo testing stages, and may be proposed for clinical trials or pharmaceutical use approval. An important aspect to consider in order to maintain high DDS’ biocompatibility is the use of dextran obtained by fermentation processes and with a minimum chemical modification degree. By performing chemical modifications, artefacts can appear in the dextran spatial structure that can lead to decreased biocompatibility or even cytotoxicity. The present review aims to systematize DDS depending on the dextran type used and the biologically active compounds transported, in order to obtain desired therapeutic effects. So far, pure dextran and modified dextran such as acetalated, oxidised, carboxymethyl, diethylaminoethyl-dextran and dextran sulphate sodium, were used to develop several DDSs: microspheres, microparticles, nanoparticles, nanodroplets, liposomes, micelles and nanomicelles, hydrogels, films, nanowires, bio-conjugates, medical adhesives and others. The DDS are critically presented by structures, biocompatibility, drugs loaded and therapeutic points of view in order to highlight future therapeutic perspectives. Full article
(This article belongs to the Special Issue New Trends in Polymer-Based Materials)
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