Nanoarchitected Tough Biological Composites from Assembled Chitinous Scaffolds

Huang, Wei; Montroni, Devis; Wang, Taifeng; Murata, Satoshi; Arakaki, Atsushi; Nemoto, Michiko; Kisailus, David

doi:10.1021/acs.accounts.2c00110

Cited by 15 publications

(10 citation statements)

References 52 publications

(116 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition to the presence of mineral components, the mechanical properties of the stylus may vary by region depending on the presence and orientation of the chitin fibers, which is the primary structural component. 4,12,15,30,[34][35][36] In order to determine the orientation of chitin fibers within the stylus, a fracture surface of a longitudinal crosssection of the stylus was prepared and observed using SEM (Figure 5a). As indicated by the orange arrow, the primary orientation of fibers occurs along the long axis in the central region from the proximal end of the stylus to the junction zone with a tooth.…”

Section: Orientation Of Chitin Fibersmentioning

confidence: 99%

“…7,13,15,[24][25][26]34,35 Since the chitin fibers are highly crystalline, a more periodic template can serve to reduce the energy barrier and guide mineralization and in some cases with architected alignment between fibers, can guide nanorod formation in the tooth. 35 Thus, nucleation and crystal growth can occur more efficiently as the chitin fibers are highly aligned, as observed on the leading edge and to a smaller extent, at the trailing edge of the tooth. 13,[24][25][26] Similarly, there is a significant concentration of crystalline magnetite on the leading edge of the stylus, coincident with the highly aligned chitinous fibers at the leading edge of the stylus.…”

Section: Orientation Of Chitin Fibersmentioning

confidence: 99%

See 1 more Smart Citation

Fibrous anisotropy and mineral gradients within the radula stylus of chiton: Controlled stiffness and damage tolerance in a flexible biological composite

Lee

Connolloy

Yang

et al. 2022

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

Over hundreds of millions of years, organisms have evolved architected structures via precise control over hierarchically assembled components, including the integration of dissimilar materials. One such example is found in the radula system of chitons, intertidal mollusks that feed on algae growing on the rock. Their radula consists of multiple rows of ultrahard teeth, each integrated with a foldable belt-like substrate via a stiff, yet flexible stylus, which is essential for efficient rasping during the feeding process. Here, we investigate the nano and micro-scale components and architectures as well as regional mechanical properties of the stylus, and their subsequent role during the rasping of Cryptochiton stelleri. Three important factors were determined to contribute to the regio-specific stiffness of the stylus: the presence of mineral components, highly oriented chitinous fibers, and a chemically cross-linked protein matrix. All these factors are varied throughout the stylus. There is a high mineral content on the trailing edge close to the tooth and a cross-linked matrix on the leading edge, both with orientational specific oriented chitin fibers that provide force transduction to the tooth. Conversely, there is a significant lack of mineral or cross-linked matrix in the proximal end as well as a low degree of fiber orientation, resulting in a flexible region that can accommodate torsion and flexure during rasping. Understanding the graded composite structure of the stylus and applying this unique design to various engineering fields such as soft robotics, biotechnology, and the medical industry, can inspire the production of high-performance materials.

show abstract

Section: Orientation Of Chitin Fibersmentioning

confidence: 99%

Section: Orientation Of Chitin Fibersmentioning

confidence: 99%

Fibrous anisotropy and mineral gradients within the radula stylus of chiton: Controlled stiffness and damage tolerance in a flexible biological composite

Lee

Connolloy

Yang

et al. 2022

Journal of Composite Materials

Self Cite

View full text Add to dashboard Cite

show abstract

“…Control of architectural features of a material is a crucial aspect in material science [ 1 ]. Despite identical composition, different architectures can lead to significant changes in, for example, structural [ 2 , 3 , 4 ], chemical or physical adsorption [ 5 ], or photonic [ 6 , 7 ] properties.…”

Section: Introductionmentioning

confidence: 99%

Direct Ink Write Printing of Chitin-Based Gel Fibers with Customizable Fibril Alignment, Porosity, and Mechanical Properties for Biomedical Applications

Montroni

Kobayashi

Hao

et al. 2022

JFB

Self Cite

View full text Add to dashboard Cite

A fine control over different dimensional scales is a challenging target for material science since it could grant control over many properties of the final material. In this study, we developed a multivariable additive manufacturing process, direct ink write printing, to control different architectural features from the nano- to the millimeter scale during extrusion. Chitin-based gel fibers with a water content of around 1500% were obtained extruding a polymeric solution of chitin into a counter solvent, water, inducing instant solidification of the material. A certain degree of fibrillar alignment was achieved basing on the shear stress induced by the nozzle. In this study we took into account a single variable, the nozzle’s internal diameter (NID). In fact, a positive correlation between NID, fibril alignment, and mechanical resistance was observed. A negative correlation with NID was observed with porosity, exposed surface, and lightly with water content. No correlation was observed with maximum elongation (~50%), and the scaffold’s excellent biocompatibility, which appeared unaltered. Overall, a single variable allowed a customization of different material features, which could be further tuned, adding control over other aspects of the synthetic process. Moreover, this manufacturing could be potentially applied to any polymer.

show abstract

“…Confined assembly of preformed monocrystalline materials and other microscopic building blocks through specific interactions or in limited spaces is efficient in packing the materials [47][48][49][50][51][52][53][54][55]. Interesting properties may be brought by forming specific alignments.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

Xia

Wang

2022

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Various kinds of monocrystalline coordination polymers are available thanks to the rapid development of related synthetic strategies. The intrinsic properties of coordination polymers have been carefully investigated on the basis of the available monocrystalline samples. Regarding the great potential of coordination polymers in various fields, it becomes important to tailor the properties of coordination polymers to meet practical requirements, which sometimes cannot be achieved through molecular/crystal engineering. Nanoarchitectonics offer unique opportunities to manipulate the properties of materials through integration of the monocrystalline building blocks with other components. Recently, nanoarchitectonics has started to play a significant role in the field of coordination polymers. In this short review, we summarize recent advances in nanoarchitectures based on monocrystalline coordination polymers that are formed through confined assembly. We first discuss the crystallization of coordination polymer single crystals inside confined liquid networks or on substrates through assembly of nodes and ligands. Then, we discuss assembly of preformed coordination polymer single crystals inside confined liquid networks or on substrates. In each part, we discuss the properties of the coordination polymer single crystals as well as their performance in energy, environmental, and biomedical applications.

show abstract

Nanoarchitected Tough Biological Composites from Assembled Chitinous Scaffolds

Abstract: The f irst report of a bicontinuous organic−mineral biological composite coating that provides both stiff ness and damping, a rare combination that outperforms many engineered structures.

Cited by 15 publications

References 52 publications

Fibrous anisotropy and mineral gradients within the radula stylus of chiton: Controlled stiffness and damage tolerance in a flexible biological composite

Fibrous anisotropy and mineral gradients within the radula stylus of chiton: Controlled stiffness and damage tolerance in a flexible biological composite

Direct Ink Write Printing of Chitin-Based Gel Fibers with Customizable Fibril Alignment, Porosity, and Mechanical Properties for Biomedical Applications

Recent advances in nanoarchitectures of monocrystalline coordination polymers through confined assembly

Contact Info

Product

Resources

About