Rheological evaluation of soil aggregate microstructure and stability across a forested catena

Javaheri, F.; Esfandiarpour-Boroujeni, I.; Kourki, Hajir; Farpoor, Mohammad Hady; Stewart, Ryan D.

doi:10.1016/j.geoderma.2021.115196

Cited by 5 publications

(2 citation statements)

References 59 publications

(75 reference statements)

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Section: Resultsmentioning

confidence: 99%

“…The parameters of this three-dimensional network include the initial particle size, number of primary particles in the aggregates, particle chain dimensions, and the dimensions of the repeating unit of three-dimensional particle network controlling the properties of the resulting nanocomposite. 42 A large particle in the system consumes more energy compared to a smaller particle due to its higher weight and available surface during the application of energy to the system, which can have a greater effect on the properties of the system. Since the penetration of polymer chains in the structure of aggregates is not possible, the total available surface of particles for sitting polymer chains decreases when they aggregate in the system Thus, aggregation has a negative effect on the efficiency of nanoparticles.…”

Section: Rheometry Testmentioning

confidence: 99%

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Application of rheology as a tool to estimate the mixing quality of elastomeric nanocomposites and comparing with small-angle X-ray scattering microstructural study

Mahdizadeh Farsangi,

Kourki,

Moradi Shahrbabaki

2023

Journal of Elastomers & Plastics

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Finding a relation between microstructure and properties of nanocomposites is challenging for engineers to control properties of polymeric systems by controlling their microstructure or to estimate their microstructure parameters by studying their properties. Since rheological properties can be obtained in stress or strain modes, sweep of temperatures, sweep of frequencies, amplitudes of applied stress or strains sweep and over the time, creating a relationship between rheological properties and microstructure of nanocomposites has a higher practical freedom. Also, rheological properties are highly affected by mixing quality, which is defined microstructure parameters of systems, so rheology can be applied as a tool to estimate the mixing quality of polymeric systems. Therefore, the present study aims to present the structural model for the rheological behavior of nanocomposites were produced under different mixing conditions and establish the relationship between rheological properties and microstructure of these nanocomposites and evaluate the presented structure with Small-angle X-ray scattering data. Thus, elastomeric nanocomposites were produced at different mixing speeds and times. The results indicated at the lower mixing intensity the agglomerates of nanoparticles are first distributed in the rubber system by increasing the time and speed of mixing so at those mixing condition rheological properties decreased. Finally at the higher mixing intensity the aggregates of these particles start to break so the rheological properties increased. Based on the rheological properties, distributing of particles reduces the rheological properties of nanocomposites, while breaking aggregates increases the rheological properties.

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Section: Resultsmentioning

confidence: 99%

Section: Rheometry Testmentioning

confidence: 99%

Application of rheology as a tool to estimate the mixing quality of elastomeric nanocomposites and comparing with small-angle X-ray scattering microstructural study

Mahdizadeh Farsangi,

Kourki,

Moradi Shahrbabaki

2023

Journal of Elastomers & Plastics

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Changes in precipitation patterns alter aggregate stability-related cations and micronutrients in a desert grassland

Zhang,

Jiang,

Wang

et al. 2024

Environ Earth Sci

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Counterions, smectite, and palygorskite increase microstructural stability of saline-sodic soils

Javaheri

Esfandiarpour-Boroujeni

Farpoor

et al. 2022

Soil and Tillage Research

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Highlights• Microstructural stability of saline-sodic soils in Sirjan Playa were analyzed via rheometry.• Sodium content had negative, non-significantly correlation with microstructural stability. • Smectite, palygosrkite, gypsum, and calcium carbonates increased microstructural stability.• Samples with negative matric potentials increased microstructural stability similarly.• Soil texture, mineralogy, and counterion concentrations may also translate to mesoscale considerations of erosion assessment.

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Rheological evaluation of soil aggregate microstructure and stability across a forested catena

Cited by 5 publications

References 59 publications

Application of rheology as a tool to estimate the mixing quality of elastomeric nanocomposites and comparing with small-angle X-ray scattering microstructural study

Application of rheology as a tool to estimate the mixing quality of elastomeric nanocomposites and comparing with small-angle X-ray scattering microstructural study

Changes in precipitation patterns alter aggregate stability-related cations and micronutrients in a desert grassland

Counterions, smectite, and palygorskite increase microstructural stability of saline-sodic soils

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