How weak hydration interfaces simultaneously strengthen and toughen nanocellulose materials

Review Materials Science, Paper & Wood

Cellulose and the role of hydrogen bonds: not in charge of everything

Malin Wohlert et al.

Summary: In the cellulose scientific community, hydrogen bonding is often exaggerated in its importance, as it is just one of several molecular interactions and relatively weak, sensitive to the environment.

CELLULOSE (2022)

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Article Engineering, Multidisciplinary

Hygromechanics of softwood cellulosic nanocomposite with intermolecular interactions at fiber-matrix interface investigated with molecular dynamics

Chi Zhang et al.

Summary: Intermolecular interactions at the fiber-matrix interface strongly influence the hygromechanical behavior and overall mechanical performance of hydrophilic cellulosic nanocomposites. The investigation of a model interface inspired by natural wood reveals an anisotropic and non-monotonic swelling behavior of the composite with increasing moisture content. The findings on the interfacial shear strength and the correlation between hydrogen bonds and interfacial shear stress provide insights into the mechanics of fiber-reinforced composites.

COMPOSITES PART B-ENGINEERING (2022)

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Article Materials Science, Multidisciplinary

A universal mechanical framework for noncovalent interface in laminated nanocomposites

Zezhou He et al.

Summary: This study explores the interaction between brick-interface systems through a multiscale analysis framework, revealing deformation modes and characteristics under different interface stacking configurations, and validates theoretical predictions through large-scale molecular dynamics simulations.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2022)

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Article Chemistry, Physical

Interface effects from moisture in nanocomposites of 2D graphene oxide in cellulose nanofiber (CNF) matrix - A molecular dynamics study

Hanieh Mianehrow et al.

Summary: Molecular dynamics simulation is used to study the effects of moisture at the cellulose nanofibril-graphene oxide interface in the wet state. It is found that trapped interfacial water reduces adhesion, but there is a meta-stable state where a dry interface can form and surface oxidation has little effect on molecular adhesion. The main adhesion mechanism is proposed to be entropy gain from the release of water molecules when CNF and GO come into contact.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Mechanics

Multiscale mechanics of noncovalent interface in graphene oxide layered nanocomposites

Zezhou He et al.

Summary: Noncovalent interfaces play an important role in layered nanocomposites for inelastic deformation and toughening. This study investigates the effects of interfacial configuration on mechanical properties in graphene oxide layered nanocomposites using a multiscale shear-lag model.

THEORETICAL AND APPLIED MECHANICS LETTERS (2022)

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Review Chemistry, Multidisciplinary

Nanocellulose for Sustainable Water Purification

Rasel Das et al.

Summary: Nanocelluloses are sustainable biomaterials with nanomaterial characteristics, offering new opportunities for clean water production. This Review discusses their applications in water purification and advancements in extraction methods, performance evaluation, and post-treatment of nanocelluloses.

CHEMICAL REVIEWS (2022)

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Article Chemistry, Physical

Water as an Intrinsic Structural Element in Cellulose Fibril Aggregates

Pan Chen et al.

Summary: By analyzing the thermodynamic consequences of water molecules located at the microfibril-microfibril interfaces in cellulose fibril aggregates through molecular dynamics simulations, it was found that these particular water molecules can stabilize the cellulose fibril aggregates. This is attributed to the enthalpic gain which overcomes the entropic penalty from strong immobilization of water molecules, serving a similar role to water in some proteins. A structural and functional hypotheses related to this finding are presented.

JOURNAL OF PHYSICAL CHEMISTRY LETTERS (2022)

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Article Chemistry, Multidisciplinary

Nanoscale Mechanism of Moisture-Induced Swelling in Wood Microfibril Bundles

Antti Paajanen et al.

Summary: Understanding nanoscale moisture interactions is crucial for the study of cellulosic nanomaterials. By combining experiments and simulations, this study investigated the effects of moisture on softwood cell walls and provided new insights. The simulation-assisted scattering analysis proved to be an efficient tool for nanoscale characterization.

NANO LETTERS (2022)

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Article Chemistry, Multidisciplinary

Mechanics Design in Cellulose-Enabled High-Performance Functional Materials

Upamanyu Ray et al.

Summary: Cellulose, with its abundant availability in natural resources and diverse structural properties, has attracted significant interest in utilizing its mechanical properties for designing high-performance functional materials. Researchers have been exploring the multiscale mechanics understanding of cellulose and developing experimental design techniques to enable its use in emerging sustainable applications. This progress has rendered cellulose a prospect for fabricating high-performance structural materials in various fields.

ADVANCED MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Strengthening and Toughening Hierarchical Nanocellulose via Humidity-Mediated Interface

YuanZhen Hou et al.

Summary: Humidity has a significant impact on cellulose-based materials, with research indicating that moderate levels of humidity can enhance and strengthen the performance of nanocellulose. This finding suggests a promising approach for designing cellulose-based materials with tailored mechanical properties.

ACS NANO (2021)

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Article Chemistry, Applied

Hydrogen bonds dominated frictional stick-slip of cellulose nanocrystals

Chi Zhang et al.

Summary: Through atomistic simulation, the mechanical behavior of cellulose-cellulose nanocrystal hydrophilic interface was studied, showing the central role of interfacial hydrogen bonds in explaining various findings. The friction force generated by a single hydrogen bond was estimated to be around 1.3 E-10 N under a shearing speed of 1 m/s.

CARBOHYDRATE POLYMERS (2021)

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Article Biochemistry & Molecular Biology

Importance of Water in Maintaining Softwood Secondary Cell Wall Nanostructure

Rosalie Cresswell et al.

Summary: Water plays a critical role at the hemicellulose-cellulose interface in the molecular architecture of softwood secondary cell walls. After dehydration, molecular shrinkage occurs and the original conformation is not fully recovered upon rehydration. These irreversible nanostructural changes provide a basis for understanding and enhancing the properties of wood-based materials.

BIOMACROMOLECULES (2021)

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Review Chemistry, Multidisciplinary

Alignment of Cellulose Nanofibers: Harnessing Nanoscale Properties to Macroscale Benefits

Kai Li et al.

Summary: Cellulose nanofibers form hierarchical structures and the alignment of these fibers significantly influences the performance of materials. Reviews on cellulose nanofibers alignment are limited, but offer opportunities for future research and development.

ACS NANO (2021)

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Article Multidisciplinary Sciences

Developing fibrillated cellulose as a sustainable technological material

Tian Li et al.

Summary: Fibrillated cellulose, derived from renewable resources, has unique technological appeal and sustainability potential. Research demonstrates its wide applications in material fabrication, but challenges remain to be overcome.

NATURE (2021)

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Article Multidisciplinary Sciences

Lightweight, strong, moldable wood via cell wall engineering as a sustainable structural material

Shaoliang Xiao et al.

Summary: This study utilizes cell wall engineering to shape flat sheets of hardwood into versatile three-dimensional structures, maintaining the mechanical properties of wood while increasing its strength. By processing wood in this way, not only can the environmental impact be reduced, but the potential applications of wood as a structural material can be expanded.

SCIENCE (2021)

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Article Engineering, Mechanical

A microstructure-based constitutive model of anisotropic cellulose nanopaper with aligned nanofibers

Qinghua Meng et al.

Summary: Cellulose nanopaper, endowed with excellent mechanical properties, can achieve strengthening and toughening by adjusting nanofiber size and increasing hydrogen bond density. This study quantitatively understands its outstanding performance through a multiscale model and proposes a scaling relation related to microstructure parameters.

EXTREME MECHANICS LETTERS (2021)

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Article Polymer Science

Polymer Films from Cellulose Nanofibrils-Effects from Interfibrillar Interphase on Mechanical Behavior

Xuan Yang et al.

Summary: The study investigates the effects of CNF film surface properties on mechanical performance and moisture sensitivity. It is found that sorbed hemicelluloses in the interfibrillar interphase enhance mechanical tensile properties, while surface-charged carboxyls increase moisture sorption and film thickness swelling, thereby reducing mechanical properties.

MACROMOLECULES (2021)

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Article Multidisciplinary Sciences

Molecular insights into the complex mechanics of plant epidermal cell walls

Yao Zhang et al.

Summary: Plants have evolved complex nanofibril-based cell walls to meet diverse biological and physical constraints, with cellulose and matrix polysaccharides playing important mechanical roles. By simulating the assembly and tensile mechanics of cell walls, researchers found that fibril-fibril sliding in cellulose networks leads to plasticity, revealing design principles of biomaterials.

SCIENCE (2021)

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Article Engineering, Biomedical

Water promotes the formation of fibril bridging in antler bone illuminated by in situ AFM testing

Xiangxin Chen et al.

Summary: This study used a new in situ mechanical test method to explore the influence of water on the micro/nanomechanical behavior of bone, finding that hydrated interface promotes slippage while dehydrated interface causes direct fracture.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2021)

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Article Forestry

Effects of moisture and cellulose fibril angle on the tensile properties of native single Norway spruce wood fibres

Nils Horbelt et al.

Summary: This study conducted microtensile tests on isolated single wood fibres with cellulose fibril angles ranging from 10 to 43 degrees under controlled humidity conditions. Results showed that stiffness reduction is more significant in fibres with larger cellulose fibril angles as moisture content increases, and stiffness reduction in fibres with low cellulose fibril angles is observed only in the fully hydrated state. The experimental data was used to determine the moisture dependent stiffness of the hemicellulose-lignin-matrix and stresses acting on the fibrils and the matrix.

WOOD SCIENCE AND TECHNOLOGY (2021)

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Article Multidisciplinary Sciences

Hygromechanical mechanisms of wood cell wall revealed by molecular modeling and mixture rule analysis

Chi Zhang et al.

Summary: Wood hygromechanics mechanisms remain unclear due to nanoscopic system size and highly coupled physics. This study uses molecular dynamics simulations to characterize wood polymers, revealing the dominating role of cellulose fiber in wood cell wall mechanics. The moisture-induced anisotropic swelling and weakening of wood cell wall is governed by the interplay of cellulose reinforcement, mechanical degradation of matrix, and fiber-matrix interface.

SCIENCE ADVANCES (2021)

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Review Nanoscience & Nanotechnology

Hydration-induced reversible deformation of biological materials

Haocheng Quan et al.

Summary: The influx and efflux of water in biological structures lead to reversible deformation, crucial for mechanical functions in plants and animals. Various mechanochemical mechanisms are involved, including swelling directed by microfibril arrangements, lignification gradients and foam-like inner structures.

NATURE REVIEWS MATERIALS (2021)

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Article Engineering, Biomedical

Computational investigation of the effect of water on the nanomechanical behavior of bone

Mohammad Maghsoudi-Ganjeh et al.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2020)

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Article Multidisciplinary Sciences

Actuation and locomotion driven by moisture in paper made with natural pollen

Ze Zhao et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

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Article Materials Science, Multidisciplinary

A constitutive model of microfiber reinforced anisotropic hydrogels: With applications to wood-based hydrogels

Jian Cheng et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2020)

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Review Nanoscience & Nanotechnology

Structure-property-function relationships of natural and engineered wood

Chaoji Chen et al.

NATURE REVIEWS MATERIALS (2020)

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Article Chemistry, Multidisciplinary

Cross-Sections of Nanocellulose from Wood Analyzed by Quantized Polydispersity of Elementary Microfibrils

Tomas Rosen et al.

ACS NANO (2020)

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Article Materials Science, Multidisciplinary

Effects of interface properties on the mechanical properties of bio-inspired cellulose nanocrystal (CNC)-based materials

Mehdi Shishehbor et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2019)

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Review Mechanics

Mechanics of Strong and Tough Cellulose Nanopaper

Qinghua Meng et al.

APPLIED MECHANICS REVIEWS (2019)

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Article Engineering, Mechanical

Selectively aligned cellulose nanofibers towards high-performance soft actuators

Yudi Kuang et al.

EXTREME MECHANICS LETTERS (2019)

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Article Materials Science, Multidisciplinary

Optimization design on simultaneously strengthening and toughening graphene-based nacre-like materials through noncovalent interaction

ZeZhou He et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2019)

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Article Chemistry, Multidisciplinary

Multiscale Control of Nanocellulose Assembly: Transferring Remarkable Nanoscale Fibril Mechanics to Macroscale Fibers

Nitesh Mittal et al.

ACS NANO (2018)

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Article Multidisciplinary Sciences

Cellulose crystals plastify by localized shear

Gergely Molnar et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2018)

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Review Multidisciplinary Sciences

Composites from renewable and sustainable resources: Challenges and innovations

Amar K. Mohanty et al.

SCIENCE (2018)

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Article Materials Science, Multidisciplinary

A multiscale crack-bridging model of cellulose nanopaper

Qinghua Meng et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2017)

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Review Chemistry, Physical

Cellulose nanofibril nanopapers and bioinspired nanocomposites: a review to understand the mechanical property space

A. J. Benitez et al.

JOURNAL OF MATERIALS CHEMISTRY A (2017)

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Review Nanoscience & Nanotechnology

Structure and mechanics of interfaces in biological materials

Francois Barthelat et al.

NATURE REVIEWS MATERIALS (2016)

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Article Materials Science, Multidisciplinary

Traction-separation laws and stick-slip shear phenomenon of interfaces between cellulose nanocrystals

Robert Sinko et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2015)

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Article Multidisciplinary Sciences

Anomalous scaling law of strength and toughness of cellulose nanopaper

Hongli Zhu et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2015)

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Article Biochemistry & Molecular Biology

Enhanced Plastic Deformations of Nanofibrillated Cellulose Film by Adsorbed Moisture and Protein-Mediated Interactions

Jani-Markus Malho et al.

BIOMACROMOLECULES (2015)

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Article Physics, Applied

Effect of moisture on the traction-separation behavior of cellulose nanocrystal interfaces

Robert Sinko et al.

APPLIED PHYSICS LETTERS (2014)

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Article Polymer Science

Dimensions of Biological Cellulose Nanocrystals Maximize Fracture Strength

Robert Sinko et al.

ACS MACRO LETTERS (2014)

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Article Biochemistry & Molecular Biology

An Ultrastrong Nanofibrillar Biomaterial: The Strength of Single Cellulose Nanofibrils Revealed via Sonication-Induced Fragmentation

Tsuguyuki Saito et al.

BIOMACROMOLECULES (2013)

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Article Biochemistry & Molecular Biology

Humidity and Multiscale Structure Govern Mechanical Properties and Deformation Modes in Films of Native Cellulose Nanofibrils

Alejandro J. Benitez et al.

BIOMACROMOLECULES (2013)

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Article Materials Science, Multidisciplinary

Mechanical properties of graphene papers

Yilun Liu et al.

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS (2012)

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Review Chemistry, Multidisciplinary

Nanocelluloses: A New Family of Nature-Based Materials

Dieter Klemm et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2011)

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Review Chemistry, Multidisciplinary

Cellulose nanomaterials review: structure, properties and nanocomposites

Robert J. Moon et al.

CHEMICAL SOCIETY REVIEWS (2011)

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Article Chemistry, Physical

The conflicts between strength and toughness

Robert O. Ritchie

NATURE MATERIALS (2011)

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Article Chemistry, Physical

Nanoconfinement controls stiffness, strength and mechanical toughness of β-sheet crystals in silk

Sinan Keten et al.

NATURE MATERIALS (2010)

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Article Biochemistry & Molecular Biology

Cellulose nanopaper structures of high toughness

Marielle Henriksson et al.

BIOMACROMOLECULES (2008)

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Article Chemistry, Physical

Cell-wall recovery after irreversible deformation of wood

J Keckes et al.

NATURE MATERIALS (2003)

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How weak hydration interfaces simultaneously strengthen and toughen nanocellulose materials

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