Hierarchical alginate biopolymer papers produced via lanthanide ion coordination

Abstract

a Inspired by the heterogeneous architectures of biological composites, mimicking the hierarchical structure of nacre is a powerful strategy to construct high-performance materials. This paper presents a lightweight and nacre-like hierarchical paper which was fabricated via lanthanide ions coordination. Sodium alginate (SA) biopolymers and lanthanide ions (Nd 3+ , Gd 3+ , Ce 3+ and Yb 3+ ) were used as ideal building blocks and connection points, respectively. SA biopolymers and lanthanide ions rapidly self-assembled into an aligned hydrogel. The synthesized hydrogel was subsequently dried to form layered alginate-based papers. The formation mechanism of the layered paper was investigated and demonstrated that lanthanide ions coordination can produce the hierarchical structure. The as-prepared layered SA-Nd(III) nanopaper exhibited high strength of 124.2±5.2 MPa, toughness of 8.2±0.4 MJ·m −3 , and Young's modulus of 5.2±0.2 GPa, as well as excellent resistance to solvents. Owing to their outstanding mechanical properties and easy and fast fabrication, the layered SANd(III) papers demonstrated a potential application in the fields of biomaterials. This new strategy based on lanthanide ion coordination, can also be used to construct integrated, high-performance, and biopolymer materials.

Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite

“…The gel-casting method is fast, simple, and versatile; therefore, it can be easily scaled-up and applied to a variety of polymers and platelets combinations to produce composites with excellent mechanical properties [18]. Moreover, the freeze casting method has limitations because it has high demand for the materials [15], and the LBL self-assembly technology and paper-making method require more time and more expensive instruments [19]. Overall, it remains a considerable scientific challenge to find accessible routes to manufacture such large-scale complex materials with high fractions of reinforcements and easily tunable nanoscale structures.…”

Supramolecular double networks of cellulose nanofibrils and algal polysaccharides with excellent wet mechanical properties

“…34 Neodymium ions have also shown interesting interactions with alginate to form layered structures with a high dry strength. 75 The crosslinking of the MM and the MG/GM blocks would result in a stiffer network, but the relative swelling thickness of these films was still around 2.4 to 2.5 which appears to be a limit for these composites, regardless of the type of crosslinking ion.…”

Covalent Grafting Terbium Complex to Alginate Hydrogels and Their Application in Fe3+ and pH Sensing

“…[6][7][8] Typically, alginates form heat-stable gels with metal cations, such as Ca 2+ and the first transition metal (Cr 3+ , Mn 2+ , Fe 3+ , Co 2+ , Ni 2+ , Cu 2+ , Zn 2+ , etc.). [12][13][14] The design of new luminescent hybrid materials based on covalently bonded lanthanide complexes has been a very active research field. [11] For about two decades, there has been a strong interest in lanthanide hybrid materials due to their intriguing optical properties (such as narrow emission bands, large Stoke shifts, and long luminescence lifetimes).…”

“…[11] For about two decades, there has been a strong interest in lanthanide hybrid materials due to their intriguing optical properties (such as narrow emission bands, large Stoke shifts, and long luminescence lifetimes). [12][13][14] The design of new luminescent hybrid materials based on covalently bonded lanthanide complexes has been a very active research field. The advantages of covalent attachment of lanthanide complexes to the silica matrix are higher doping concentrations, better homogeneity, and the utilization of the so-called antenna effect (or sensitization) via the polydentate ligands.…”