Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Liu, Yahao; Zheng, Jian; Zhang, Xiao; Du, Yongqiang; Yu, Guibo; Li, Ké; Jia, Yunfei

doi:10.1039/d1ra00944c

Cited by 15 publications

(10 citation statements)

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“…The highest tensile strength of 6.97 MPa is achieved, when the BDB content is 20%, due to the highest cross-link density (16.4 × 10 −4 mol/cm 3 ). In comparison with recent reported HTPB-based PU vitrimer [35][36][57][58] as Figure 10 shown, it is found high mechanical properties in this work. It results from a incorporation of soft HTPB and rigid HPS, MDI, BDB with benzene ring, and physical cross-links formed by hydrogen bonds.…”

Section: Mechanical Properties Thermal Performance and Dynamic Proper...supporting

confidence: 53%

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Sustainable Polyurethane Networks with High Self‐Healing and Mechanical Properties Based on Dual Dynamic Covalent Bonds

Zeng

et al. 2022

Macro Chemistry & Physics

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Hydroxy-terminated polybutadiene (HTPB) based polyurethanes (PU) networks are broadly applied in industry and aviation, however, their nonrecyclability leads to the waste of petroleum. In this work, a series of novel self-healing, weldable, and recyclable HTPB-based PU networks with dual reversible covalent bonds are fabricated by one-pot polycondensation. To shorten the relaxation time, dual reversible covalent bonds (disulfide bonds and boronic ester bonds) are incorporated into the HTPB-based PU networks. Meanwhile, to promote tensile strength, the rigid isocyanate and cross-link agent are introduced into the networks. Obtained HTPB-based PU network structures are characterized by FTIR, Raman, and DMA measurements. Obtained HHMB-4-20 network shows the best mechanical properties (tensile strength = 6.97 MPa, elongation at break = 302 %), and the mechanical properties almost can be recovered after welding/reprocessing by hot pressing. To satisfy the demands of industrial sustainability, the synthesis of PU networks with capabilities of reprocessing, self-healing, and welding is a feasible approach.

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Section: Mechanical Properties Thermal Performance and Dynamic Proper...supporting

confidence: 53%

“…As shown in Figure 10, ref. [35,38,58,72,73] reported that HTPB-based PU vitrimers show remarked self-healing properties at low temperature, while tensile strength is low. Meanwhile, the HTPB-based PU vitrimers in ref.…”

Section: Self-healing and Welding Propertiesmentioning

confidence: 99%

Sustainable Polyurethane Networks with High Self‐Healing and Mechanical Properties Based on Dual Dynamic Covalent Bonds

Zeng

et al. 2022

Macro Chemistry & Physics

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“…As shown in Figure 3 b, a new signal, N1s at 400.1 eV, appears in the spectra of PDA@CNFs, and N1s accounts for 3.61% of PDA@CNFs. Figure 3 c shows the UV-VIS spectra chemical polymerization of DA after 24 h at 25 °C, and PDA@CNFs shows two broad peaks at around 280 nm and 405 nm in the aqueous solution, which are suggested as evidence for the oxidation self-polymerization of DA [ 41 , 42 ]. For CNFs, the XPS C1s spectrum can be curve-fitted with four peak components at the binding energy of 284.8 eV, 286.6 eV, 289.0 eV and 291.1 eV, attributable to the C-C, C-O, O=C-O and π-π species, respectively, as shown in Figure 3 d. However, for PDA@CNFs, the XPS C1s spectra shows a new peak at 285.5 eV, which represents C-N (see Figure 3 e).…”

Section: Resultsmentioning

confidence: 99%

Study on Mechanical Properties and High-Speed Impact Resistance of Carbon Nanofibers/Polyurethane Composites Modified by Polydopamine

Gao

et al. 2022

Polymers

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Polyurethane elastomers (PUE), with superior mechanical properties and excellent corrosion resistance, are applied widely to the protective capability of structures under low-speed impact. However, they are prone to instantaneous phase transition, irreversible deformation and rupture even arising from holes under high-speed impact. In this paper, mussel adhesion proteins were applied to modify carbon nanofibers (CNFs) in a non-covalent way, and creatively mixed with PUE. This can improve the dispersity and interfacial compatibility of nanofillers in the PUE matrix. In addition, the homogeneous dispersion of modified nanofillers can serve as “reinforcing steel bars”. The nanofillers and PUE matrix can form “mud and brick” structures, which show superb mechanical properties and impact resistance. Specifically, the reinforcement of 1.0 wt.% modified fillers in PUE is 103.51%, 95.12% and 119.85% higher than the neat PUE in compression modulus, storage modulus and energy absorption capability, respectively. The results have great implications in the design of composite parts for aerospace and army vehicles under extreme circumstances.

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“…4h). 25,[45][46][47][48][49][50][51][52][53][54] The poly(TA)/Al composite elastomers can rapidly repair damage and self-heal and is thus a promising candidate for operation in harsh environments.…”

Section: Self-healing and Reprocessing Properties Of Poly(ta)/al Comp...mentioning

confidence: 99%

Superior stretchable, low thermal resistance and efficient self-healing composite elastomers for thermal management

Wang

Fan

et al. 2022

J. Mater. Chem. A

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Bioinspired modified graphene oxide/polyurethane composites with rapid self-healing performance and excellent mechanical properties

Abstract: We successfully modified graphene oxide with amino-terminated hyperbranched polyamide(MGO), and obtained novel mussel-inspired MGO/polyurethane composites with outstanding self-healing and mechanical performances via rational molecular design.

Cited by 15 publications

References 84 publications

Sustainable Polyurethane Networks with High Self‐Healing and Mechanical Properties Based on Dual Dynamic Covalent Bonds

Sustainable Polyurethane Networks with High Self‐Healing and Mechanical Properties Based on Dual Dynamic Covalent Bonds

Study on Mechanical Properties and High-Speed Impact Resistance of Carbon Nanofibers/Polyurethane Composites Modified by Polydopamine

Superior stretchable, low thermal resistance and efficient self-healing composite elastomers for thermal management

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