Residual Strain and Nanostructural Effects during Drying of Nanocellulose/Clay Nanosheet Hybrids: Synchrotron X-ray Scattering Results.

Cellulose nanofibrils (CNF) with 2D silicate nanoplatelet reinforcement readily form multifunctional composites by vacuum-assisted self-assembly from hydrocolloidal mixtures. The final nanostructure is formed during drying. The crystalline nature of CNF and montmorillonite (MTM) made it possible to use synchrotron X-ray scattering (WAXS, SAXS) to monitor structural development during drying from water and from ethanol. Nanostructural changes in the CNF and MTM crystals were investigated. Changes in the out-of-plane orientation of CNF and MTM were determined. Residual drying strains previously predicted from theory were confirmed in both cellulose and MTM platelets due to capillary forces. The formation of tactoid platelet stacks could be followed. We propose that after filtration, the constituent nanoparticles in the swollen, solid gel already have a "fixed" location, although self-assembly and ordering processes take place during drying.

[1]  A. Alexakis,et al.  Optical Properties of Slot‐Die Coated Hybrid Colloid/Cellulose‐Nanofibril Thin Films , 2023, Advanced Optical Materials.

[2]  X. Gong,et al.  Nacre-Mimetic Hierarchical Architecture in Polyborosiloxane Composites for Synergistically Enhanced Impact Resistance and Ultra-Efficient Electromagnetic Interference Shielding. , 2022, ACS nano.

[3]  Tianyi Zhao,et al.  Large-Area Ultrastrong and Stiff Layered MXene Nanocomposites by Shear-Flow-Induced Alignment of Nanosheets. , 2022, ACS nano.

[4]  Lars A. Berglund,et al.  Recyclable nanocomposites of well-dispersed 2D layered silicates in cellulose nanofibril (CNF) matrix. , 2021, Carbohydrate polymers.

[5]  Canhui Lu,et al.  Facile Fabrication of Densely Packed Ti3C2 MXene/Nanocellulose Composite Films for Enhancing Electromagnetic Interference Shielding and Electro-/Photothermal Performance. , 2021, ACS nano.

[6]  M. Wada,et al.  Time-Dependent Elastic Tensor of Cellulose Nanocrystal Probed by Hydrostatic Pressure and Uniaxial Stretching. , 2021, The journal of physical chemistry letters.

[7]  Qi Zhou,et al.  Surface Charges Control the Structure and Properties of Layered Nanocomposite of Cellulose Nanofibrils and Clay Platelets , 2021, ACS applied materials & interfaces.

[8]  K. Uetani,et al.  High-Speed Fabrication of Clear Transparent Cellulose Nanopaper by Applying Humidity-Controlled Multi-Stage Drying Method , 2020, Nanomaterials.

[9]  W. Batchelor,et al.  High-performance homogenized and spray coated nanofibrillated cellulose-montmorillonite barriers , 2020, Cellulose.

[10]  K. Mazeau,et al.  Drying-induced bending deformation of cellulose nanocrystals studied by molecular dynamics simulations , 2020, Cellulose.

[11]  L. Wågberg,et al.  Macro- and Microstructural Evolution during Drying of Regenerated Cellulose Beads , 2020, ACS nano.

[12]  L. Berglund,et al.  Nanocomposites from Clay, Cellulose Nanofibrils, and Epoxy with Improved Moisture Stability for Coatings and Semistructural Applications , 2019, ACS Applied Nano Materials.

[13]  L. Berglund,et al.  Nanostructure and Properties of Nacre-Inspired Clay/Cellulose Nanocomposites—Synchrotron X-ray Scattering Analysis , 2019, Macromolecules.

[14]  W. Batchelor,et al.  Nanocellulose-montmorillonite composites of low water vapour permeability , 2018 .

[15]  L. Berglund,et al.  Nanostructured Wood Hybrids for Fire-Retardancy Prepared by Clay Impregnation into the Cell Wall. , 2017, ACS applied materials & interfaces.

[16]  M. Hsieh,et al.  Hazy Transparent Cellulose Nanopaper , 2017, Scientific Reports.

[17]  T. Vuorinen,et al.  Porosity of wood pulp fibers in the wet and highly open dry state , 2016 .

[18]  L. Berglund,et al.  Extreme Thermal Shielding Effects in Nanopaper Based on Multilayers of Aligned Clay Nanoplatelets in Cellulose Nanofiber Matrix , 2016 .

[19]  L. Brinson,et al.  Stop Motion Animation Reveals Formation Mechanism of Hierarchical Structure in Graphene Oxide Papers , 2016 .

[20]  G. Camino,et al.  Oriented clay nanopaper from biobased components--mechanisms for superior fire protection properties. , 2015, ACS applied materials & interfaces.

[21]  L. Berglund,et al.  High-performance and moisture-stable cellulose-starch nanocomposites based on bioinspired core-shell nanofibers. , 2015, Biomacromolecules.

[22]  P. Langan,et al.  Structural coarsening of aspen wood by hydrothermal pretreatment monitored by small- and wide-angle scattering of X-rays and neutrons on oriented specimens , 2014, Cellulose.

[23]  G. Salazar-Alvarez,et al.  Functional hybrids based on biogenic nanofibrils and inorganic nanomaterials , 2013 .

[24]  Tom Lindström,et al.  High strength, flexible and transparent nanofibrillated cellulose-nanoclay biohybrid films with tunable oxygen and water vapor permeability. , 2012, Nanoscale.

[25]  T. Nishino,et al.  Cellulose nanofiber orientation in nanopaper and nanocomposites by cold drawing. , 2012, ACS applied materials & interfaces.

[26]  L. Brinson,et al.  Evolution of order during vacuum-assisted self-assembly of graphene oxide paper and associated polymer nanocomposites. , 2011, ACS nano.

[27]  Dieter Klemm,et al.  Nanocelluloses: a new family of nature-based materials. , 2011, Angewandte Chemie.

[28]  O. Ikkala,et al.  Clay nanopaper with tough cellulose nanofiber matrix for fire retardancy and gas barrier functions. , 2011, Biomacromolecules.

[29]  L. Brinson,et al.  High‐Nanofiller‐Content Graphene Oxide–Polymer Nanocomposites via Vacuum‐Assisted Self‐Assembly , 2010 .

[30]  Marielle Henriksson,et al.  Cellulose nanopaper structures of high toughness. , 2008, Biomacromolecules.

[31]  H. Jameel,et al.  Changes in pore size distribution during the drying of cellulose fibers as measured by differential scanning calorimetry , 2006 .

[32]  Zhiyong Tang,et al.  Nanostructured artificial nacre , 2003, Nature materials.

[33]  B. Sakharov,et al.  Diffraction effects calculated for structural models of K-saturated montmorillonite containing different types of defects , 1984, Clay Minerals.