Enabling Supramolecular Phase Change Materials with High Latent Heat Ability and Recyclability DOI

Yansheng Liao,

Zhengkai Wei,

Silong Chen

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(32), P. 14190 - 14198

Published: Aug. 2, 2024

The design of supramolecular phase change materials (SPCMs) with both high latent heat and recyclability remains challenging via multivalent interactions such as hydrogen bonds. Herein, the SPCMs are developed by integrating linear polyethylene glycol (PEG) functional components into physically cross-linking networks formed between polymers polyurethane, enabling a combination 143.1 J/g solvent-assisted recyclability. presented tunable (87.3–143.1 J/g) temperature (36.4–59.8 °C) molecular weight content free PEGs. had much smaller spherulite size than PEG counterparts due to effect polymer on crystallization behaviors PEGs in SPCMs. network endowed good thermal reliability, stability, nonleakage properties. Significantly, recycle were enabled completely dissolving SPCM solvent then removing solvent. nicely realizes recycling, which will extend application range materials.

Language: Английский

Engineering of Reversibly Cross‐Linked Elastomers Toward Flexible and Recyclable Elastomer/Carbon Fiber Composites with Extraordinary Tearing Resistance DOI
Xiaohan Wang, Junqi Sun

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(35)

Published: July 14, 2024

Carbon fiber (CF)-reinforced polymers (CFRPs) demonstrate potential for use in personal protective equipment. However, existing CFRPs are typically rigid, nonrecyclable, and lack of tearing resistance. In this study, flexible, recyclable, resistant polyurethane (PU)-CF composites fabricated through complexation reversibly cross-linked PU elastomer binders with CF fabrics. The PU-CF possess a high strength 767 MPa record-high fracture energy 2012 kJ m

Language: Английский

Citations

20
Hybrid Soft Segments Boost the Development of Ultratough Thermoplastic Elastomers with Tunable Hardness DOI Open Access

Xingxue Zhang,

Luping Wang, Kaiqiang Zhang

et al.

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 19, 2025

Abstract The hardness of thermoplastic elastomers (TPEs) significantly influences their suitability for various applications, but traditionally, enhancing reduces toughness. Herein a method is introduced that leverages hybrid soft segments to fine‐tune the TPEs without compromising exceptional Through selective copolymerization polytetramethylene ether glycols (PTMEGs) at molecular weights, supramolecular poly(urethane‐urea) are molecularly engineered cover wide spectrum while retaining good It achieved through formation graded functional zones—densely packed enhanced and strength, loosely greater extensibility toughness—driven by variations in PTMEG chain length mismatched interactions. establishment systematic investigation TPE library, intricate interplay between design, structure, performance these materials elucidated, refining optimization techniques. demonstrate mechanical properties, including variant with Shore 86A toughness 819 MJ m −3 , alongside softer 59A 786 innovation extends scalable solvent‐based production line, promising widespread industrial application. This advancement reimagines potential high‐performance composites, offering versatile demanding applications.

Language: Английский

Citations

3
Synergistic cross-linking strategy with oxime-carbamate and hydrogen bonding arrays for excellent damage self-healing and reprocess ability of thermoset polyurethanes DOI
Pengwu Xu, Ning Ding, Hong Wang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160951 - 160951

Published: Feb. 1, 2025

Language: Английский

Citations

3
Fabrication of Mechanical Strong Supramolecular Waterborne Polyurethane Elastomers With the Inspiration of Hierarchical Dynamic Structures of Scallop Byssal Threads DOI
Mingguang Zhang, Yining Wang,

Minghang Yang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 16, 2024

Abstract Advancing the development of eco‐friendly waterborne polyurethane elastomers (WPUEs) can significantly reduce reliance on organic solvents, which is crucial for environmental conservation. Nevertheless, achieving superior mechanical properties and self‐healing capabilities in WPUEs presents a considerable challenge. Drawing inspiration from hierarchical dynamic structures observed scallop byssal threads, high‐strength supramolecular elastomer (SWPUE), designated SWPU‐DESH‐Zn, developed this study. Owing to precise regulation hydrogen bonding state acylsemicarbazide (ASC) fragments via disulfide bonds, formation coordination interactions between carboxyl zinc ions, as‐prepared exhibited robust strength 52.07 MPa, comparable that solvent‐based elastomers. Additionally, it notable capability excellent reprocessability. Meanwhile, high‐performance ionic skins electromagnetic interference (EMI) shielding materials are also fabricated using SWPU‐DESH‐Zn as matrix, further illustrating its potential applications. This novel biomimetic approach, inspired by offers valuable insights designing healable polymers with enhanced properties.

Language: Английский

Citations

17
Mechanically Robust, Reprocessable, and Light-Controlled Healable Solvent-Free Lignin-Containing Polyurethane Elastomers Based on Dynamic Phenol-Carbamate Network DOI
Peng Jin, Haixu Wang, Shusheng Chen

et al.

Macromolecules, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 9, 2025

In this study, we introduce an innovative one-step, solvent-free approach for preparing lignin-containing polyurethane elastomers (LPUes) with nanomicro phase-separated structure and dynamic dual-cross-linking networks comprising both phenol-carbamate bonds (PCBs) hydrogen bonds. This distinctive structural design imparted exceptional mechanical properties to the LPUes. The sample containing 22.9 wt % phenolized lignin exhibited tensile strength of 44.6 MPa, elongation at break 714.6%, toughness 148.0 MJ/m3. abundance PCBs also conferred remarkable reprocessing capabilities, these LPUes retaining over 98% 94.4% after two hot-pressing cycles. Moreover, incorporation endowed photothermal properties, facilitating efficient light-controlled self-healing shape-memory functionalities. work offers pathway harmonize thermal adaptability in development sustainable high-performance LPUes, thereby opening their avenues diverse potential applications.

Language: Английский

Citations

1
In Situ Anchoring Functional Molecules to Polymer Chains Through Supramolecular Interactions for a Robust and Self‐Healing Multifunctional Waterborne Polyurethane DOI
Chen Zhou, Nana Zhao, Weiqi Liu

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract Nowadays, much attention is paid to the development of high‐performance and multifunctional materials, but it still a great challenge obtain polymer materials with high mechanical properties, self‐healing multifunctionality in one. Herein, an innovative strategy proposed satisfactory waterborne polyurethane (PMWPU‐Bx) by situ anchoring 3‐aminophenylboronic acid (3‐APBA) pyrene‐capped (PMWPU) via supramolecular interactions. The multiple functional sites inherent 3‐APBA can produce interactions groups on PMWPU, promoting aggregation hard domains network, which confers PMWPU‐Bx strength (7.9 MPa) modulus (243.2 MPa). Meanwhile, dynamic natures boronic ester bonds formed condensation endow efficiency. Additionally, exhibits fluorescence tunability due controlled π–π stacking. In this research, molecules onto polymers through synchronously achieves performance multi‐functionality polyurethanes, also broadens their potential applications fields optical anticounterfeiting encrypted information transmission.

Language: Английский

Citations

1
Rigid and crosslinkable polyimide curing epoxy resin with enhanced comprehensive performances DOI
Yifan Li, Jiahui Li, Wenhao Zhang

et al.

Polymer, Journal Year: 2024, Volume and Issue: 297, P. 126836 - 126836

Published: Feb. 27, 2024

Language: Английский

Citations

8
Super‐Durable, Tough Shape‐Memory Polymeric Materials Woven from Interlocking Rigid‐Flexible Chains DOI Creative Commons
Jing Xu, Mingchao Shao,

Tianze Chen

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: 11(38)

Published: Aug. 5, 2024

Developing advanced engineering polymers that combine high strength and toughness represents not only a necessary path to excellence but also major technical challenge. Here for the first time rigid-flexible interlocking polymer (RFIP) is reported featuring remarkable mechanical properties, consisting of flexible polyurethane (PU) rigid polyimide (PI) chains cleverly woven together around copper(I) ions center. By rationally weaving PI, PU chains, ions, RFIP exhibits ultra-high (twice unwoven polymers, 91.4 ± 3.3 MPa), (448.0 14.2 MJ m

Language: Английский

Citations

8
Enabling High Strength and Toughness Polyurethane through Disordered‐Hydrogen Bonds for Printable, Recyclable, Ultra‐Fast Responsive Capacitive Sensors DOI Creative Commons
Xingbao Chen, Shiwei Zhao, Anqian Yuan

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Abstract The rapid advancement of smart, flexible electronic devices has paralleled a surge in waste (e‐waste), exacerbating massive resource depletion and serious environmental pollution. Recyclable materials are extensively investigated to address these challenges. Herein, this study designs unique polyurethane (SPPUs) with ultra‐high strength up 60 MPa toughness 360 MJ m −3 . This synthetic SPPUs can be fully recycled at room temperature by using green solvents ethanol. Accordingly, the resultant SPPU‐Ni composites, created mixing ethanol‐dissolved solution nickel (Ni) powder, effectively combine flexibility recyclability electrical conductivity filler. Notably, work develops printable capacitive sensors (PCBS) through transcribing paste SPPUs‐Ni slurry onto PET film paper screen‐printing technology. devised PCBS have fast response time ≈50 ms, high resolution, multiple signal recognition capabilities. Remarkably, Ni powder only dissolving offers sustainable growing e‐waste problem recyclable electronics.

Language: Английский

Citations

6
Synthesis of Novel Nonisocyanate Poly(imide-urea)s from CO2-based Polyureas DOI
Hui Li,

Wenhan Huang,

Fengyu Zhao

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(22), P. 8552 - 8561

Published: May 20, 2024

Polyimides show excellent thermal stability and mechanical properties, but the high glass transition temperature (Tg) renders difficulty to their processing. To solve such a problem, herein, series of novel poly(imide-urea)s (PIUs) were synthesized from CO2-based polyureas (PUas) with 3,3′,4,4′-biphenyltetracarboxylic dianhydride (s-BPDA) 4,4′-diaminodiphenyl ether (ODA) in absence isocyanate. The PIUs adjustable properties variable solubility obtained by altering molar ratio molecular weight PUas. Incorporating PUas at 5% could significantly lower Tg nearly 70 °C compared polyimide (based on s-BPDA ODA), leading large improvement processing performance simultaneously preserving polyimide, where tensile strength reached 146 MPa, Young's modulus was 3.0 GPa 10% loss remained 411 °C.

Language: Английский

Citations

4