Search Results - "Nakajima, Tasuku"
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Generalization of the sacrificial bond principle for gel and elastomer toughening
Published in Polymer journal (01-06-2017)“…Although conventional polymer gels are known as mechanically weak materials, their fracture toughness can be effectively improved by introducing weak and…”
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2
Mechanoresponsive self-growing hydrogels inspired by muscle training
Published in Science (American Association for the Advancement of Science) (01-02-2019)“…Living tissues, such as muscle, autonomously grow and remodel themselves to adapt to their surrounding mechanical environment through metabolic processes. By…”
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3
Fabrication of Tough and Stretchable Hybrid Double-Network Elastomers Using Ionic Dissociation of Polyelectrolyte in Nonaqueous Media
Published in Chemistry of materials (28-05-2019)“…The double-network (DN) structure is a state-of-the-art strategy used for toughening soft materials. The challenge for widespread applications, however, is the…”
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4
Force-triggered rapid microstructure growth on hydrogel surface for on-demand functions
Published in Nature communications (20-10-2022)“…Living organisms share the ability to grow various microstructures on their surface to achieve functions. Here we present a force stamp method to grow…”
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Anisotropic tough double network hydrogel from fish collagen and its spontaneous in vivo bonding to bone
Published in Biomaterials (01-07-2017)“…Abstract Soft supporting tissues in the human body, such as cartilages and ligaments, are tough materials firmly fixed to bones. These soft tissues, once…”
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A Universal Molecular Stent Method to Toughen any Hydrogels Based on Double Network Concept
Published in Advanced functional materials (07-11-2012)“…Double‐network hydrogels (DN gels), despite their high water content, are the strongest and toughest soft and wet materials available. However, in conventional…”
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Nanophase Separation in Immiscible Double Network Elastomers Induces Synergetic Strengthening, Toughening, and Fatigue Resistance
Published in Chemistry of materials (11-05-2021)“…High modulus, toughness, and fatigue resistance are usually difficult to be obtained simultaneously in rubbery materials. Here, we report that by superimposing…”
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Molecular mechanism of abnormally large nonsoftening deformation in a tough hydrogel
Published in Proceedings of the National Academy of Sciences - PNAS (06-04-2021)“…Tough soft materials usually show strain softening and inelastic deformation. Here, we study the molecular mechanism of abnormally large nonsoftening,…”
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Elastic–Plastic Transformation of Polyelectrolyte Complex Hydrogels from Chitosan and Sodium Hyaluronate
Published in Macromolecules (13-11-2018)“…Hydrogels formed by polyelectrolyte complexation (PEC) of oppositely charged biopolymers, free of any chemical additives, are promising biomaterials. In this…”
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10
How chain dynamics affects crack initiation in double-network gels
Published in Proceedings of the National Academy of Sciences - PNAS (07-12-2021)“…Double-network gels are a class of tough soft materials comprising two elastic networks with contrasting structures. The formation of a large internal damage…”
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Proteoglycans and Glycosaminoglycans Improve Toughness of Biocompatible Double Network Hydrogels
Published in Advanced materials (Weinheim) (22-01-2014)“…Based on the molecular stent concept, a series of tough double‐network hydrogels (St‐DN gels) made from the components of proteoglycan aggregates – chondroitin…”
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Tough Particle‐Based Double Network Hydrogels for Functional Solid Surface Coatings
Published in Advanced materials interfaces (07-12-2018)“…Coating solid surfaces with tough hydrogels is necessary for the practical application of hydrogels in various fields. Here a simple yet versatile method for…”
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13
Anisotropic Growth of Hydroxyapatite in Stretched Double Network Hydrogel
Published in ACS nano (26-12-2017)“…Bone tissues possess excellent mechanical properties such as compatibility between strength and flexibility and load bearing owing to the hybridization of…”
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14
Mechanical Model for Super-Anisotropic Swelling of the Multi-Cylindrical PDGI/PAAm Gels
Published in Polymers (01-04-2023)“…MC-PDGI/PAAm gels are cylindrical composite gels containing poly(dodecyl glyceryl itaconate) (PDGI) as a polymerized lipid oriented in a multilayer tubular…”
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Distinctive Characteristics of Internal Fracture in Tough Double Network Hydrogels Revealed by Various Modes of Stretching
Published in Macromolecules (24-07-2018)“…The cyclic stretching measurements in various geometries including uniaxial, planar, unequal, and equal biaxial extension reveal the distinctive features of…”
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Tough polyion-complex hydrogels from soft to stiff controlled by monomer structure
Published in Polymer (Guilford) (05-05-2017)“…Tough hydrogels with adjustable stiffness are expected for adapting application as various biomaterials. Oppositely charged polyelectrolytes form tough and…”
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Squid/synthetic polymer double-network gel: elaborated anisotropy and outstanding fracture toughness characteristics
Published in NPG Asia materials (20-01-2023)“…The hierarchical anisotropy of a biotissue plays an essential role in its elaborate functions. To mimic the anisotropy-based functions of biotissues, soft and…”
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18
Water-Induced Brittle-Ductile Transition of Double Network Hydrogels
Published in Macromolecules (23-11-2010)“…In the previous studies, we have developed double network hydrogels (DN gels) with extra-ordinarily high mechanical strength and toughness although the gels…”
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Water-Triggered Ductile–Brittle Transition of Anisotropic Lamellar Hydrogels and Effect of Confinement on Polymer Dynamics
Published in Macromolecules (24-10-2017)“…We study the effect of dehydration on the structure and mechanical properties of anisotropic lamellar hydrogels, consisting of alternative stacking of several…”
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Both Galactosaminogalactan and α-1,3-Glucan Contribute to Aggregation of Aspergillus oryzae Hyphae in Liquid Culture
Published in Frontiers in microbiology (13-09-2019)“…Filamentous fungi generally form aggregated hyphal pellets in liquid culture. We previously reported that α-1,3-glucan-deficient mutants of Aspergillus…”
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