Superior Performance of Polyurethane Based on Natural Melanin Nanoparticles

Wang, Yang; Li, Ting; Wang, Xuefei; Ma, Piming; Bai, Huiyu; Dong, Weifu; Xie, Yi Min; Chen, Mingqing

doi:10.1021/acs.biomac.6b01298

Cited by 78 publications

(64 citation statements)

References 40 publications

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“…High strength and toughness are important for protective materials. The typical reinforcing strategies include introducing fillers and increasing crosslinking . Recently, energy dissipation has become an efficient way of reinforcement and attracted significant attention .…”

Section: Resultsmentioning

confidence: 99%

Biomimetic Materials with Multiple Protective Functionalities

Liu

Zhang

Guan

et al. 2019

Adv Funct Materials

111

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Natural tissues possess superior material properties such as self-healing, mechanical robustness, and mechanical gradients that allow organisms to adapt and survive in dangerous environments. Although highly desired, imparting synthetic materials with these biomimetic protective features remains a challenge. Here, the versatile dimethylglyoxime-urethane (DOU) moiety is used to create a multifunctional polyurethane (DOU-PU). The reactivities of DOU including reversible dissociation, metal coordination, photolysis enabled self-healing, high strength and toughness, mechanical gradient formation, and spatially controlled functionalization. By incorporating DOU, a multifunctional protective film is produced with superior resistance to mechanical damage, rapid room temperature self-healing, and anti-counterfeiting features. This super biomimetic film is expected to be very useful for the protection of various types of valuable objects such as electronics, diplomas, currency, and automobiles.

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Section: Resultsmentioning

confidence: 99%

Biomimetic Materials with Multiple Protective Functionalities

Liu

Zhang

Guan

et al. 2019

Adv Funct Materials

111

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“…Region 2 was a moderate‐modulus region governed by the deformation of soft domains and the alignment of hard domains. Region 3 was a strain‐hardening region associated with the breakup of hard domains and the unraveling of the entangled nanoparticles . Strong interactions allowed the adhesive to bear a stronger force and greater shape deformation.…”

Section: Resultsmentioning

confidence: 99%

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Xie

Liu

et al. 2018

J of Applied Polymer Sci

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Polyurethane (PU) has been widely used as a glue in various areas. However, adhesion in the presence of water is greatly impeded and results in most synthetic adhesive failure. In this study, we designed and synthesized a novel PU construction; underwater PU adhesives were created by the incorporation of synthetic glycerol monomethacrylate (GMA). Furthermore, the urethane structure helped the adhesive eliminate the interfacial water barrier through interactions that were stronger than hydrogen bonding, and GMA as a crosslinking agent was used to generate post-covalent-crosslinking networks through radical polymerization. This enhanced the cohesion so the diffusion of water molecules could be overcome. Fourier transform infrared spectroscopy, thermogravimetric analysis, underwater adhesion measurements, and tensile tests were used to characterize the chemical and mechanical properties of the as-obtained adhesive. This led to an adhesive with a better mechanical strength and interfacial adhesion in water, and the results show that the mechanical properties (tensile strength, Young's modulus, and tensile elongation) of the GMA-PU adhesive were higher than those of the pure PU. As for the 4% GMA, the tensile strength was enhanced by 24.3% and the elongation was enhanced by 125.23% over those of the pure PU. This confirmed that the incorporation of GMA into the PU matrix indeed induced increasing cohesion, and the sample's adhesive strength was 21.19 6 3.9 MPa; this indicated a superior adhesive strength over that of the pure PU. In addition, we can foresee that underwater adhesion will play an important role in prospective surgery and engineering areas. V C 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46579.

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“…Although the polymerization mechanism of PDAPs has not been well understood, the active groups, such as catechol, amine, imine and hydroxyl groups (Figure 4b), on the particle surface have been confirmed, which can interact with the polyurethane chains to form strong hydrogen bonding. [26][27][28][29][30] An analogous hydrogen bonding interaction was also found in melanin particles (which have similar chemical structures with PDAPs) filled polyurethane composites reported by Wang et al [33]…”

Section: Resultsmentioning

confidence: 76%

Polydopamine Particle‐Filled Shape‐Memory Polyurethane Composites with Fast Near‐Infrared Light Responsibility

Yang

Tong²,

Wang

et al. 2018

ChemPhysChem

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A new kind of fast near-infrared (NIR) light-responsive shape-memory polymer composites was prepared by introducing polydopamine particles (PDAPs) into commercial shape-memory polyurethane (SMPU). The toughness and strength of the polydopamine-particle-filled polyurethane composites (SMPU-PDAPs) were significantly enhanced with the addition of PDAPs due to the strong interface interaction between PDAPs and polyurethane segments. Owing to the outstanding photothermal effect of PDAPs, the composites exhibit a rapid light-responsive shape-memory process in 60 s with a PDAPs content of 0.01 wt%. Due to the excellent dispersion and convenient preparation method, PDAPs have great potential to be used as high-efficiency and environmentally friendly fillers to obtain novel photoactive functional polymer composites.

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Superior Performance of Polyurethane Based on Natural Melanin Nanoparticles

Cited by 78 publications

References 40 publications

Biomimetic Materials with Multiple Protective Functionalities

Biomimetic Materials with Multiple Protective Functionalities

Underwater polyurethane adhesive with enhanced cohesion by postcrosslinking of glycerol monomethacrylate

Polydopamine Particle‐Filled Shape‐Memory Polyurethane Composites with Fast Near‐Infrared Light Responsibility

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