Anisotropic Polymeric Particles
Anisotropic Polymeric Particles - Related Videos
09:27
Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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Cited by 1 •
2012
We have used plasma enhanced chemical vapor deposition to deposit thin films ranging from a few nm to several 100 nm on nano-sized particles of various materials. We subsequently etch the core material to produce hollow nanoshells whose permeability is controlled by the thickness of the shell. We characterize the permeability of these coatings to small solutes and demonstrate that these barriers can provide sustained release of the core material over several days.
10:16
Fabrication of Anisotropic Polymeric Artificial Antigen Presenting Cells for CD8+ T Cell Activation
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Cited by 4 •
2018
Here, we present a protocol to quickly and reproducibly generate biologically inspired, biodegradable articifical antigen presenting cells (aAPC) with tunable size, shape, and surface protein presentation for T cell expansion ex vivo or in vivo.
09:59
Anisotropic Polyvinyl Alcohol Phantom Fabrication for Ultrasound Elastography: Procedure and Quality Controls
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2026
This protocol describes a robust, reproducible method for fabricating anisotropic polyvinyl alcohol (PVA) phantoms—essential tools for validating ultrasound elastography techniques targeting mechanically anisotropic soft tissues (e.g., skeletal muscle).
11:09
Grafting Multiwalled Carbon Nanotubes with Polystyrene to Enable Self-Assembly and Anisotropic Patchiness
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Cited by 5 •
2018
A procedure for the synthesis of polystyrene-grafted multiwalled carbon nanotubes using successive chemical modification steps to selectively introduce the polymer chains to the sidewalls and their self-assembly via anisotropic patchiness is presented.
06:45
Polymerization
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2023
Source: Vy M. Dong and Jan Riedel, Department of Chemistry, University of California, Irvine, CA Polymers are made from macromolecules, which are composed of repeating units (the so called monomeric units). In our modern world, polymers play an important role. One of the first important polymers was nylon, which is a polyamide. It found widespread application in tooth brushes and stockings.
FAQs
Directional geometry, surface chemistry, or internal composition creates nonuniform interactions rather than the same response in every direction. As a result, a particle may interact differently with fluids, interfaces, or neighboring particles depending on its orientation. These structure–function relationships can affect how selectively it binds contaminants, moves through an environment, or performs within a remediation or sensing system.
Orientation changes which region of an anisotropic polymeric particle contacts a fluid or interface. Because different regions can present different shapes or surface chemistries, that contact may alter interfacial transport and interactions with surrounding materials. Studying orientation therefore helps explain variations in mobility and performance that would be difficult to attribute to particle size or composition alone.
Selective surface modification can place different chemical features in defined regions of the particle, producing nonuniform interactions with contaminants. Those patterned interactions may favor attachment to particular targets while influencing how the particle behaves in the surrounding fluid. In environmental research, this principle supports designs aimed at improving contaminant capture and the effectiveness of pollutant-remediation systems.
Spherical, uniform particles present more consistent geometry and surface properties in different directions. Anisotropic polymeric particles can instead combine directional shape, patterned surface chemistry, or varied internal composition, creating more complex interactions with fluids, interfaces, and other particles. This added structural control may provide greater influence over orientation, selective binding, transport, and application-specific performance.
Controlled assembly, selective modification, and phase separation are identified routes for generating anisotropic features. Each approach can create variation in geometry, surface chemistry, or internal composition, which then becomes linked to particle behavior. In environmental material development, selecting a fabrication route is important because the resulting structure determines how the particles interact with contaminants, interfaces, and surrounding fluids.
A study can connect fabrication and environmental function by examining how controlled structural features influence contaminant binding, mobility, interfacial transport, or remediation performance. Researchers can compare particles with different directional characteristics to determine which structure–function relationships are most useful. This approach supports the design of materials intended to improve pollutant capture or related water-treatment outcomes.
Their nonuniform surfaces and directional interactions make them relevant to environmental sensing, where selective interactions can help connect a particle’s structure with the presence or behavior of a target contaminant. The same principles also inform transport studies, because orientation and interfacial interactions may influence mobility. Together, these uses extend the particles beyond capture into monitoring and measurement-oriented systems.