Dynamic surface chemistry and interparticle interactions mediating chemically fueled dissipative assembly of colloids

Dissanayake, Thilini Umesha; Hughes, John F.; Woehl, Taylor J.

doi:10.1016/j.jcis.2023.06.207

Cited by 2 publications

(1 citation statement)

References 54 publications

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“…The microbeads and hSDCs are strongly attracted to each other and less attracted to themselves. The combined magnitude of bead–SDC fibril interaction energy is greater than the thermal energy, kT , below the dimensionless distance of 1.73 d / R c , i.e., there will be sufficient attractive energies between the microbeads and hSDC fibers when the particles are closer than 0.173 μm from surface to surface . Thus, once the microbeads closely approach the hSDC fibers, they will be captured irreversibly.…”

Section: Results and Discussionmentioning

confidence: 99%

Colloidal Engineering of Microplastic Capture with Biodegradable Soft Dendritic “Microcleaners”

Bang,

Verster,

Hong

et al. 2024

Langmuir

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The introduction of colloidal principles that enable efficient microplastic collection from aquatic environments is a goal of great environmental importance. Here, we present a novel method of microplastic (MP) collection using biodegradable hydrogel soft dendritic colloids (hSDCs). These dendritic colloids have abundant nanofibrils and a large surface area, which provide an abundance of interfacial interactions and excellent networking capabilities, allowing for the capture of plastic particles and other contaminants. Here, we show how the polymer composition and morphology of the hSDCs can impact the capture of microplastics modeled by latex microbeads. Additionally, we use colloidal DLVO theory to interpret the capture efficiencies of microbeads of different sizes and surface functional groups. The results demonstrate the microplastic remediation efficiency of hydrogel dendricolloids and highlight the primary factors involved in the microbead interactions and adsorption. On a practical level, the results show that the development of environmentally benign microcleaners based on naturally sourced materials could present a sustainable solution for microplastic cleanup.

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Section: Results and Discussionmentioning

confidence: 99%