Investigation of the structural and electrical conductivity properties in pure and cation exchanged rectorite

Vyalikh, Anastasia; Atanasova, Maria T.; Focke, Walter W.; Makarova, Anna A.; Krajnc, Andraz; Mali, Gregor

doi:10.1016/j.clay.2023.107116

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…The expandable smectite layer is of montmorillonite-beidellite composition and the mica component is of the brittle-micas series paragonite-margarite. Previous NMR and XRD studies of Beatrix rectorite [39,[51][52][53] reported a high degree of regularity in the layered structure (coe cient of variation for d 00l of 0.12). A high degree of Al substitution in the mica tetrahedral sheet was established, resulting in the pairing of high-charge top and bottom tetrahedral sheets in a MacEwan crystallite model [54][55][56].…”

Section: Discussionmentioning

confidence: 99%

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization and properties

Atanasova,

Focke,

Loots

2024

Preprint

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Cohesive flexible rectorite clay films with good mechanical performance were prepared by a simple casting method through self-assembly of exfoliated natural clay from aqueous dispersions. The multi-layered microstructure of the films consisted of continuous layers of aligned clay platelets parallel to the casting surface. Layers overlap randomly in lateral direction (plane) and join vertically in irregular manner by edge to face cross-linkages (bridging) to form coherent multi-layered nanostructured films with platelet-void microstructure. The films with highest mechanical properties had thickness below 30 µm. Overall films from rectorite clay with monovalent interlayer content exibited a higher experimental tensile strengths ranging up to 44 MPa and Young’s modulus up to 56 GPa. The corresponding experimental values for films with divalent interlayer cations were 23 MPa for strength and 25 GPa for modulus. The highest experimental values for strength and modulus for neat Na-Ca-rectorite films were 25 MPa and 50 GPa respectively. The mechanical property values of the rectorite-based clay films compare favourably with values featured by polymer films typically used for packaging applications.

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Section: Discussionmentioning

confidence: 99%

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization and properties

Atanasova,

Focke,

Loots

2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization, and properties

Atanasova,

Focke,

Loots

2024

J Mater. Sci: Mater Eng.

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Cohesive flexible rectorite clay films with good mechanical performance were prepared by a simple casting method through the self-assembly of exfoliated natural clay from aqueous dispersions. The multi-layered microstructure of the films consisted of continuous layers of aligned clay platelets parallel to the casting surface. Layers overlap randomly in the lateral direction (plane) and join vertically in an irregular manner by edge-to-face cross-linkages (bridging) to form coherent multi-layered nanostructured films with platelet-void microstructure. The films with the highest mechanical properties had thicknesses below 30 µm. Overall films from rectorite clay with monovalent interlayer content exhibited a higher experimental tensile strength ranging up to 44 MPa and Young’s modulus up to 56 GPa. The corresponding experimental values for films with divalent interlayer cations were 23 MPa for strength and 25 GPa for modulus. The highest experimental values for strength and modulus for neat Na–Ca–rectorite films were 25 MPa and 50 GPa respectively. These two mechanical property values of the best rectorite-based clay films compare favorably with values featured by polymer films typically used for packaging applications.

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Low-Temperature Curing Polyimide Composites with Low Coefficient of Thermal Expansion for High-Temperature Electronic Packaging

Hou,

He,

Lin

et al. 2024

Preprint

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Investigation of the structural and electrical conductivity properties in pure and cation exchanged rectorite

Cited by 3 publications

References 26 publications

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization and properties

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization and properties

Self-assembled rectorite films with remarkable mechanical performance: preparation, structural characterization, and properties

Low-Temperature Curing Polyimide Composites with Low Coefficient of Thermal Expansion for High-Temperature Electronic Packaging

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