Industrial & Engineering Chemistry Research, Journal Year: 2025, Volume and Issue: unknown
Published: March 14, 2025
Language: Английский
Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: 195, P. 106801 - 106801
Published: Jan. 15, 2025
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159863 - 159863
Published: Jan. 23, 2025
Language: Английский
Citations
0
International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 140332 - 140332
Published: Jan. 1, 2025
Language: Английский
Citations
0
ACS Sustainable Chemistry & Engineering, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 27, 2025
Language: Английский
Citations
0
Coatings, Journal Year: 2025, Volume and Issue: 15(2), P. 165 - 165
Published: Feb. 2, 2025
Though polyurethanes (PUs) are widely used in people’s daily lives, traditional PUs generally fabricated from toxic (poly)isocyanates. Furthermore, (poly)isocyanates commonly industrially prepared a seriously and injurious chemical compound named phosgene, which is dangerous gas that can cause lung irritation eventually death. As known to all, the consumption of carbon dioxide (CO2)-based raw materials reactions productions will be conducive reducing greenhouse effect. In this paper, non-isocyanate polyurethane (NIPU) diol was through polyaddition reaction ethylenediamine CO2-based ethylene carbonate, then NIPU-based silicone-containing thiol hyperbranched polymers (NIPU-SiHPs) were synthesized NIPU diol. Finally, UV-curable optical-silicone-modified coatings (UV-NIPUs) NIPU-SiHPs pentaerythritol triacrylate by UV-initiated thiol-ene click without UV initiator. The UV-NIPUs demonstrated high transparency over 90% (400–800 nm), good mechanical performance with tensile strength reaching 3.49 MPa, superior thermal stability an initial decomposition temperature (Td5) range 239.7–265.6 °C, moderate hydrophilicity water contact angle 42.6–62.1°, pencil hardness 5–9H, adhesive grade 0. results indicate it promising green strategy fabricate high-performance materials.
Language: Английский
Citations
0
Journal of Polymer Research, Journal Year: 2025, Volume and Issue: 32(2)
Published: Feb. 1, 2025
Language: Английский
Citations
0
Molecules, Journal Year: 2025, Volume and Issue: 30(3), P. 678 - 678
Published: Feb. 4, 2025
Rigid polyurethane foam (RPUF) is a widely utilized thermosetting polymer across various industrial applications, valued for its exceptional properties. However, the demand sustainable alternatives to petroleum-based polymers has grown increasingly urgent due rising environmental concerns. Despite widespread use, RPUF faces challenges such as inadequate mechanical strength, limited thermal stability, and high flammability, all of which are crucial considerations in commercial household applications. Globally, ongoing efforts focused on developing innovative technologies that convert renewable sources into new monomers polymers, some could serve traditional RPUFs. Several approaches have been explored improve flame retardancy RPUFs, including modification bio-based polyols incorporation performance-enhancing fillers. This review emphasizes recent advances RPUFs derived from natural resources, focusing their preparation, characterization, properties, strategies enhance strength safety Additionally, it explores applications materials fields, addressing potential developments packaging, items, construction, automotive
Language: Английский
Citations
0
Fire, Journal Year: 2025, Volume and Issue: 8(2), P. 64 - 64
Published: Feb. 5, 2025
As the demand for high-performance polymers broadens, polyurethane (PU) with various chemical modifications have attracted attention. This review explores structure and functional variations of PUs. PUs are used in a variety fields, ranging from aerospace engineering to daily necessities, show remarkable safety adaptability through designable synthesis processes. study is divided into four main parts: (1) structure, covering PU base modification additive compounds; (2) performance, studying physical properties thermal degradation processes; (3) application, evaluating commercial potential polymers; (4) flame retardancy, analyzing five established flame-retardant mechanisms. The last part discusses how can meet sustainable development goals by replacing petroleum-based materials green materials. By emphasizing non-petroleum resources novel, strategies, this conducts guidance safe environmentally friendly application future.
Language: Английский
Citations
0
Materials Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown, P. 130522 - 130522
Published: Feb. 1, 2025
Language: Английский
Citations
0
Macromolecular Rapid Communications, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 9, 2025
Abstract The need for functional polymers derived from plant‐based materials has increased a carbon‐neutral perspective. Herein, six different semialicyclic isosorbide‐containing diamine‐based polyimides (ISSD‐PIs) are synthesized by incorporating isosorbide (ISS), which is D‐glucose derivative, into the diamine moiety to investigate relationship between chemical structure and optical, thermal, dielectric properties. Compared with conventional fully aromatic PIs, such as Kapton, as‐prepared ISSD‐PIs demonstrate excellent optical transparency, low refractive indices (1.554–1.633), birefringence (0.0084–0.0348) at 1310 nm, constants (2.93–3.36) moderate dissipation factors (0.0112–0.0267) 10 GHz. They also exhibit thermal stability, glass transition temperatures exceeding 250 °C 5% decomposition 400 °C. chirality of ISS skeleton remains intact, displaying characteristic circular dichroism. This study shows that incorporation PI chains enhances their properties while maintaining stability increasing free volume reducing intermolecular interactions. In addition, physical more dependent on rigidity dianhydride moiety, directly affects molecular packing chains, rather than moiety.
Language: Английский
Citations
0