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: 25 October 2024 | Viewed by 527

Special Issue Editor


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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

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Keywords

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

Published Papers (1 paper)

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Research

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 382
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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