Sub-micrometer hybrid spheres with a poly-dopamine core and loaded silver nanoparticles (NPs) were fabricated by facile method. The new show strong antibacterial activity due to their special structure, effectively preventing NP aggregation.

Abstract Most tough hydrogels are reinforced by introducing energy dissipation mechanisms, but simultaneously realizing a high toughness and low hysteresis is challenging because the structure cannot recover rapidly. In this work, mechanical performance highly entangled double network without fabricated, in which physical entanglements act as primary effective crosslinking first network. This sliding entanglement allows hydrogel to form uniform oriented during stretching, resulting tensile...

Abstract The electrochemical performance of all‐solid‐state lithium batteries (ASSLBs) can be significantly improved by addressing the challenges posed space charge layer (SCL) effect, which plays a crucial role in determining Li + ions transport kinetic at cathodic interface. Therefore, it is critical to realize situ inspection and visualization SCL behaviors for solving sluggish issues, despite remaining grant challenges. Therewith, well‐defined model LiNbO 3 ‐coated NCM (NCM@LNO) cathode...

New linear polyurethane was synthesized via a Diels–Alder (DA) reaction between prepolymer end-capped with furan groups (MPF) and bismaleimide (BMI). The structure of the DA bonds characterized by 1H NMR, ATI-FTIR, TGA AFM. introduction enables thermal reversibility, which studied thoroughly DSC GPC. Besides, new also exhibits self-healing properties under heat treatment, observed polarized optical microscope. efficiency determined recovery breaking tensile strength after being damaged...

A facile method was found to incorporate a mussel-inspired adhesive moiety into synthetic polymers, and mussel mimetic polyurethanes were developed as hydrogels. In these urethane backbone substituted for the polyamide chain of proteins, dopamine appended mimic proteins. series created through step-growth polymerization based on hexamethylene diisocyanate hard segment, PEG having different molecular weights soft lysine-dopamine extender. Upon treatment with Fe3+, aqueous polyurethane...

Abstract To satisfy the ever‐accelerated demands for advanced engineering biomaterials with excellent physicochemical properties, injectable and recoverable dual‐network (DN) hydrogels based on poly( l ‐lysine)‐graft‐4‐hydroxyphenylacetic acid (PLL‐g‐HPA) Aga are constructed by simply mixing PLL‐g‐HPA/HRP PLL‐g‐HPA/H 2 O in through enzyme‐catalyzed cross‐linkage of PLL‐g‐HPA temperature‐adjusted sol‐gel transition Aga. The performances attributed to reversible transitional feature...

ABSTRACT Crosslinked self‐healing polyurethane/urea based on a Diels–Alder reaction (C‐PMPU–DA) was synthesized from multiple‐furan monomer and commercial bismaleimide. The (PMPU–furan) obtained functionalized prepolymer (polymeric MDI: PBA‐2000 = 2:1) by furfuryl amine. structures of both the PMPU–furan C‐PMPU–DA were characterized attenuated total reflectance (ATR)–Fourier transform infrared (FTIR) spectroscopy, differential scanning calorimetry, thermogravimetric analysis, 1 H‐NMR. bonds...

Hydrogels are polymeric materials that have a relatively high capacity for holding water. Recently, double network (DN) technique was developed to fabricate hydrogels with toughness comparable rubber. The mechanical properties of DN may be attributed the brittle sacrificial bonding one hydrogel, facilitating stress dispersion, combined ductile polymer chains second hydrogel. Herein, we report novel class tunable composed polyurethane hydrogel and stronger, dipole-dipole H-bonding interaction...

It has been widely reported that cellulose nanocrystals (CNCs) demonstrate a special structural color, which stems from chiral nematic domains. Herein, the humidity and heat dual response nanocomposite films with multilayered helical structure were prepared by self-assembling of CNCs hydrazone groups modified poly(N-isopropylacrylamide) (PNIPAM) copolymers. Furthermore, glutaraldehyde was involved to act as chemical linker improve cyclic stability forming acylhydrazone bonds. The color could...

Polysaccharide-based hydrogels (PSBHs) have received significant attention for numerous bio-applications due to their biocompatibility and non-immunogenic performance.

Primary mono-amine (furfuryl amine) is functionalized as a chain extender to obtain linear polyurethane bearing pendant furan groups (L-PU-Furan), unlike the previous research (furanic diols extender). Furfuryl amine can functionalize due reactivity between resultant urea group and NCO at higher temperatures. Pendant cross-linked containing DA bond (C-PU-DA) obtained from cross-linking of L-PU-Furan bismaleimide (BMI) via Diels–Alder reaction. C-PU-DA are characterized by 1H NMR, FTIR, DSC...

ABSTRACT The Diels–Alder (DA) reaction is particularly desirable for the preparation of heat‐stimuli self‐healing polymeric materials because its thermal reversibility, high yield, and minimal side reactions. Some attempts were conducted to synthesize polyether–maleimide‐based crosslinked polyurethane with DA bonds (C‐PEMIPU–DA) through reactions prepolymer (polymeric MDI/PBA‐1000) functionalized by furfuryl amine polyether–maleimide without benzene in this study. structures intermediates...

Lots of beetles, moths, and birds in the natural world present stunning unique structural colors as well excellent hydrophobic performances. Herein, a novel bioinspired variable structural-color film with organic-solvent responsiveness surface hydrophobicity was fabricated. Cellulose nanocrystals (CNCs) provided color left-handed helicity. PEG-PPG-PEG triblock copolymers (PPPTCs) were blended CNCs, giving rise to organic-solvent-responsive wider red-shift window reflectance peak. The could...

Abstract The electrochemical performance of all-solid-state lithium batteries (ASSLBs) can be prominently enhanced by minimizing the detrimental degradation solid electrolytes through their undesirable side reactions with conductive carbon additives (CCAs) inside composite cathodes. Herein, well-defined Mo 3 Ni N nanosheets embedded onto N-doped porous carbons (NPCs) substrate are successfully synthesized (Mo-Ni@NPCs) as CCAs LiCoO 2 for Li 6 PSC 5 Cl (LPSCl)-based ASSLBs. This...

A tetrahedron-like PEG macromonomer-based fluorescent hydrogel was fabricated by a facile method.

Biocompatible bone adhesive is a kind of promising biomaterial in orthopedic and trauma surgery. However, despite the urgent need, there no appropriate system that can meet all requirements for adhesive. In this study, porous polyurethane (PUA) was fabricated, effects water, polyisocyanate, β-tricalcium phosphate (β-TCP) on physicochemical mechanical properties PUAs were investigated. By varying water content, with different surface morphologies porosities prepared. The adhesion strength...