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Polymers
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Polyurethane Composites: Properties and Applications
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Polyurethane Composites: Properties and Applications

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

Deadline for manuscript submissions: 15 November 2025 | Viewed by 3990

Special Issue Editor

Dr. Jianying Hu

E-Mail Website
Guest Editor
School of Transportation, Southeast University, Nanjing 211189, China
Interests: polyurethane binder and mixture; polymer modified asphalt; molecular dynamics simulation on materials

Special Issue Information

Dear Colleagues,

Polyurethane is a class of organic polymer with unique properties such as high flexibility, superior adhesion, good elasticity, high impact and tensile strength, good weathering resistance, excellent gloss, color retention, and corrosion resistance properties. To further improve physicochemical properties, polyurethane composites are fabricated with additional fillers, and have been applied in fields of coatings, paints, fibers, adhesives, automotive, sensors, biomedical science, and civil construction.

This Special Issue will address synthesis, characterizations, and applications of innovative polyurethane composites with enhanced properties, such as explosion and impact resistance, anti-corrosive property, fire resistance, electric and thermal conduction, anti-bacterial, and self-healing performance.

Dr. Jianying Hu
Guest Editor

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

  • polyurethane composites
  • physicochemical properties
  • synthesis
  • characterizations
  • thermal conduction
  • anti-bacterial
  • self-healing

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Published Papers (3 papers)

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Research

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16 pages, 8992 KiB  
Article
Synthesis and Evaluation of Polyurethane as Waterproof Adhesion Layer for Steel Bridge Deck
by Yan Chen, Jianying Hu, Xiaonan Wu, Shaochan Duan, Hongyu Wang and Tao Ma
Polymers 2024, 16(22), 3140; https://doi.org/10.3390/polym16223140 - 11 Nov 2024
Cited by 1 | Viewed by 1349
Abstract
Service life of traditional steel bridge deck pavement is significantly shortened due to the failure of waterproof adhesion. To improve the interlayer bonding performance and extend its service life, polyurethane is proposed as a waterproof adhesion layer (WAL) for a steel bridge deck. [...] Read more.
Service life of traditional steel bridge deck pavement is significantly shortened due to the failure of waterproof adhesion. To improve the interlayer bonding performance and extend its service life, polyurethane is proposed as a waterproof adhesion layer (WAL) for a steel bridge deck. This study aims to synthesize polyurethane WAL by free radical solution polymerization under different types and dosages of crosslinking agents as well as the mixing ratio of an acrylic co-blend. Tensile properties, water resistance, glass transition temperatures, thermal stability, and adhesive strength of the polyurethane binder are evaluated. The results demonstrate that polyurethane WAL yields desirable performance by using a hydroxyl molar ratio of 1/3 and an acrylic co-blend of 65%. Specifically, the tensile strength and breaking elongation of polyurethane WAL reach the maximum values of 6.466 MPa and 268.4%, respectively. The water absorption rate of polyurethane WAL is less than 4%. Glass transition temperatures of polyurethane WAL are between −80 °C and 60 °C, respectively. Polyurethane WAL features remarkable high- and low-temperature performance and thermal stability. Finally, adhesion strength between polyurethane WAL and the steel plate reaches up to 5.21 MPa. The outcome of this study facilitates the design and application of polyurethane waterproofing adhesion layers for steel bridge decks. Full article
(This article belongs to the Special Issue Polyurethane Composites: Properties and Applications)
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15 pages, 4534 KiB  
Article
Self-Organization of Polyurethane Ionomers Based on Organophosphorus-Branched Polyols
by Ilsiya M. Davletbaeva, Oleg O. Sazonov, Ilyas N. Zakirov, Alexander V. Arkhipov and Ruslan S. Davletbaev
Polymers 2024, 16(13), 1773; https://doi.org/10.3390/polym16131773 - 23 Jun 2024
Viewed by 1096
Abstract
Based on organophosphorus branched polyols (AEPAs) synthesized using triethanolamine (TEOA), ortho-phosphoric acid (OPA), and polyoxyethylene glycol with MW = 400 (PEG), vapor-permeable polyurethane ionomers (AEPA-PEG-PUs) were obtained. During the synthesis of AEPAs, the reaction of the OPA etherification with polyoxyethylene glycol was [...] Read more.
Based on organophosphorus branched polyols (AEPAs) synthesized using triethanolamine (TEOA), ortho-phosphoric acid (OPA), and polyoxyethylene glycol with MW = 400 (PEG), vapor-permeable polyurethane ionomers (AEPA-PEG-PUs) were obtained. During the synthesis of AEPAs, the reaction of the OPA etherification with polyoxyethylene glycol was studied in a wide temperature range and at different molar ratios of the starting components. It turned out that OPA simultaneously undergoes a catalytically activated etherification reaction with triethanolamine and PEG. After TEOA is fully involved in the etherification reaction, excess OPA does not react with the terminal hydroxyl groups of AEPA-PEG or the remaining amount of PEG. The ortho-phosphoric acid remaining in an unreacted state is involved in associative interactions with the phosphate ions of the AEPA. Increasing the synthesis temperature from 40 °C to 110 °C leads to an increase in OPA conversion. However, for the AEPA-PEG-PU based on AEPA-PEG obtained at 100 °C and 110 °C, ortho-phosphoric acid no longer enters into associative interactions with the phosphate ions of the AEPA. Due to the hydrophilicity of polyoxyethylene glycol, the presence of phosphate ions in the polyurethane structure, and their associative binding with the unreacted ortho-phosphoric acid, the diffusion of water molecules in polyurethanes is enhanced, and high values of vapor permeability and tensile strength were achieved. Full article
(This article belongs to the Special Issue Polyurethane Composites: Properties and Applications)
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Review

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42 pages, 16521 KiB  
Review
Macromolecular Architecture in the Synthesis of Micro- and Mesoporous Polymers
by Ilsiya M. Davletbaeva and Oleg O. Sazonov
Polymers 2024, 16(23), 3267; https://doi.org/10.3390/polym16233267 - 24 Nov 2024
Cited by 1 | Viewed by 1123
Abstract
Polymers with micro- and mesoporous structure are promising as materials for gas storage and separation, encapsulating agents for controlled drug release, carriers for catalysts and sensors, precursors of nanostructured carbon materials, carriers for biomolecular immobilization and cellular scaffolds, as materials with a low [...] Read more.
Polymers with micro- and mesoporous structure are promising as materials for gas storage and separation, encapsulating agents for controlled drug release, carriers for catalysts and sensors, precursors of nanostructured carbon materials, carriers for biomolecular immobilization and cellular scaffolds, as materials with a low dielectric constant, filtering/separating membranes, proton exchange membranes, templates for replicating structures, and as electrode materials for energy storage. Sol–gel technologies, track etching, and template synthesis are used for their production, including in micelles of surfactants and microemulsions and sublimation drying. The listed methods make it possible to obtain pores with variable shapes and sizes of 5–50 nm and achieve a narrow pore size distribution. However, all these methods are technologically multi-stage and require the use of consumables. This paper presents a review of the use of macromolecular architecture in the synthesis of micro- and mesoporous polymers with extremely high surface area and hierarchical porous polymers. The synthesis of porous polymer frameworks with individual functional capabilities, the required chemical structure, and pore surface sizes is based on the unique possibilities of developing the architecture of the polymer matrix. Full article
(This article belongs to the Special Issue Polyurethane Composites: Properties and Applications)
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