Effects of morphology and rheology of starch nanoparticles prepared from various coarse cereals on emulsifying ability

Fan, Jing; Feng, Jing; Hu, Wen-Xuan; Ren, Yanjing; Ma, Chao; Lei, Chang; Liu, Yangjin; Lv, Xin; Yu, Xiuzhu; Du, Shuang‐kui

doi:10.1016/j.carbpol.2022.120137

Cited by 9 publications

(1 citation statement)

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“…Studying the stability of emulsion includes Van der Walls attraction energy (UA) and Poisson-Boltzmann electrostatic repulsion (UR) energy evaluation [34,35] . UA is a function of attractive forces like Debye, London, and dipole-dipole forces [36] .…”

Section: Theoretical Model For Stability Of Latexmentioning

confidence: 99%

Optimizing synthesis and application of an enhanced oil recovery agent: stability assessment of the optimized nanostructured PNIPAM/PS core–shell polymer using a developed DLVO-based model

Mohammadipour,

Amiri,

Dashti

et al. 2024

Colloid Polym Sci

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To improve the efficiency of hydrophilic polymers in oil reservoirs, a method encapsulates the polymer within a protective shell, safeguarding the core polymer and enabling controlled release in demanding, high-temperature conditions. Poly(N-isopropylacrylamide) nanoparticles are encapsulated with Poly styrene shells through emulsion polymerization in this study.Varying the amounts of shell monmer and crosslinking agents resulted thick, sphere-shaped shells with homogeneous morphology, which protects the core polymer and enabling controlled release. Structural and morphological properties are characterized using Fourier-transform infrared spectroscopy (FTIR), Proton nuclear magnetic resonance (H 1 NMR), Dynamic Light Scattering (DLS), and Scanning electron microscope (SEM) imaging. Increasing the styrene amounts lead to larger particles, while higher crosslinker amounts result in a narrower size distribution. Thermal testing indicates heat resistance up to 300°C, suitable for EOR applications. Rheological tests determine an optimal 30-day release for the PNIPAM core, with the CS polymer showing increased viscosity under harsh conditions. DLVO theory and experimental results demonstrate good stability and energy barriers at room temperature, but decreased stability and increased agglomeration at higher temperatures. Thickening the styrene shell leads to particle agglomeration and unsuitable stability. The study confirms the effectiveness of the model in analyzing CS colloidal latex systems.

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Section: Theoretical Model For Stability Of Latexmentioning

confidence: 99%