Synthesis, Characterization and Applications of Functional Polymeric Materials

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

Deadline for manuscript submissions: 25 September 2024 | Viewed by 2059

Special Issue Editors

Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX 77005, USA
Interests: bottlebrush polymers; surface treatment; antifouling; crosslinking; ToF-SIMS
School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou, China
Interests: surface science; surfactants; density functional theory; molecular dynamics

E-Mail Website
Guest Editor
Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, MS 365, Houston, TX 77005, USA
Interests: asphaltene; microfluidics; polymers

Special Issue Information

Dear Colleagues,

Over the course of human history, polymeric materials have been extensively used, with a notable surge following the development of the first human-made plastics in the 19th century. However, they face challenges due to their environmental impact and the evolving demands of modern life. These materials, known for their affordability but limited mechanical strength, now encounter fresh requisites. This has triggered urgent demand for the creation of distinct polymeric materials tailored for specific applications. Consequently, the exploration, comprehension, and practical application of such specialized materials have become increasingly indispensable.

Polymeric materials inherently possess adjustable chemical compositions and physical structures. Manipulating one or both of these attributes allows the realization of unique applications. For instance, fine-tuning physical structures has led to the exploration of cyclic polymers, hyperbranched polymers, star polymers, and more, which exhibit distinctive properties applicable to areas such as rheology, lubrication, drug delivery, and photonic crystals. Similarly, the deliberate design and synthesis of chemical compositions have yielded exceptional traits like superhydrophobicity, exceptional mechanical properties, conductivity, and piezoelectricity. In many cases, optimal applications necessitate the harmonization of both physical structures and chemical compositions.

This Special Issue centers on the synthesis, characterization, and application of functional polymeric materials. The scope encompasses advanced studies aimed at enhancing the synthetic accessibility of these unique materials, as well as the characterization and elucidation of their distinct structures and properties, alongside their exceptional applications.

Dr. Hao Mei
Dr. Jing Yang
Dr. Zhuqing Zhang
Guest Editors

Manuscript Submission Information

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Keywords

  • functional polymeric materials
  • cyclic polymers
  • hyperbranched polymers
  • superhydrophobicity
  • conductive polymers
  • piezoelectric polymers

Published Papers (2 papers)

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Research

14 pages, 4766 KiB  
Article
Synthesis and Characteristic Valuation of a Thermoplastic Polyurethane Electrode Binder for In-Mold Coating
by Suk-Min Hong, Hyuck-Jin Kwon, Jung-Min Sun and Chil Won Lee
Polymers 2024, 16(3), 375; https://doi.org/10.3390/polym16030375 - 30 Jan 2024
Viewed by 635
Abstract
A polyurethane series (PHEI-PU) was prepared via a one-shot bulk polymerization method using hexamethylene diisocyanate (HDI), polycarbonate diol (PCD), and isosorbide derivatives (ISBD) as chain extenders. The mechanical properties were evaluated using a universal testing machine (UTM), and the thermal properties were evaluated [...] Read more.
A polyurethane series (PHEI-PU) was prepared via a one-shot bulk polymerization method using hexamethylene diisocyanate (HDI), polycarbonate diol (PCD), and isosorbide derivatives (ISBD) as chain extenders. The mechanical properties were evaluated using a universal testing machine (UTM), and the thermal properties were evaluated using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The PHEI-PU series exhibited excellent mechanical properties with an average tensile strength of 44.71 MPa and an elongation at break of 190%. To verify the applicability of different proportions of PU as an electrode binder, PU and Ag flakes were mixed (30/70 wt%) and coated on PCT substrates, the electrodes were evaluated by four-point probe before and after 50% elongation, and the dispersion was evaluated by scanning electron microscopy (SEM). The electrical resistance change rate of PHEI-PU series was less than 20%, and a coating layer with well-dispersed silver flakes was confirmed even after stretching. Therefore, it exhibited excellent physical properties, heat resistance, and electrical resistance change rate, confirming its applicability as an electrode binder for in-mold coating. Full article
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14 pages, 2199 KiB  
Article
Amide-Containing Bottlebrushes via Continuous-Flow Photoiniferter Reversible Addition–Fragmentation Chain Transfer Polymerization: Micellization Behavior
by Alexey Sivokhin, Dmitry Orekhov, Oleg Kazantsev, Ksenia Otopkova, Olga Sivokhina, Ilya Chuzhaykin, Alexey Ovchinnikov, Olga Zamyshlyayeva, Irina Pavlova, Olga Ozhogina and Maria Chubenko
Polymers 2024, 16(1), 134; https://doi.org/10.3390/polym16010134 - 31 Dec 2023
Viewed by 983
Abstract
Herein, a series of ternary amphiphilic amide-containing bottlebrushes were synthesized by photoiniferter (PI-RAFT) polymerization of macromonomers in continuous-flow mode using trithiocarbonate as a chain transfer agent. Visible light-mediated polymerization of macromonomers under mild conditions enabled the preparation of thermoresponsive copolymers with low dispersity [...] Read more.
Herein, a series of ternary amphiphilic amide-containing bottlebrushes were synthesized by photoiniferter (PI-RAFT) polymerization of macromonomers in continuous-flow mode using trithiocarbonate as a chain transfer agent. Visible light-mediated polymerization of macromonomers under mild conditions enabled the preparation of thermoresponsive copolymers with low dispersity and high yields in a very short time, which is not typical for the classical reversible addition–fragmentation chain transfer process. Methoxy oligo(ethylene glycol) methacrylate and alkoxy(C12–C14) oligo(ethylene glycol) methacrylate were used as the basic monomers providing amphiphilic and thermoresponsive properties. The study investigated how modifying comonomers, acrylamide (AAm), methacrylamide (MAAm), and N-methylacrylamide (-MeAAm) affect the features of bottlebrush micelle formation, their critical micelle concentration, and loading capacity for pyrene, a hydrophobic drug model. The results showed that the process is scalable and can produce tens of grams of pure copolymer per day. The unmodified copolymer formed unimolecular micelles at temperatures below the LCST in aqueous solutions, as revealed by DLS and SLS data. The incorporation of AAm, MAAm, and N-MeAAm units resulted in an increase in micelle aggregation numbers. The resulting bottlebrushes formed uni- or bimolecular micelles at extremely low concentrations. These micelles possess a high capacity for loading pyrene, making them a promising choice for targeted drug delivery. Full article
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