Hydrophilic Matrix
Hydrophilic Matrix - Related Videos
03:07
Hydrophilic Interaction Liquid Chromatography: A Technique to Separate Hydrophilic Polar Analytes Using Hydrophilic Beads
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2025
This video demonstrates the principle of separation of hydrophilic polar compounds using hydrophilic interaction liquid chromatography. This technique helps in the purification of various polar analytes, including N-glycans.
09:01
A Protocol for the Production of Gliadin-cyanoacrylate Nanoparticles for Hydrophilic Coating
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2016
This article presents a protocol for the production of protein-based nanoparticles that changes the hydrophobic surface to hydrophilic. The produced nanoparticle is an assembly of gliadin-cyanoacrylate diblock copolymers. Spray coating with the produced nanoparticle changes the surface of target material to a hydrophilic surface.
09:09
Synthesis of Poly(N-isopropylacrylamide) Janus Microhydrogels for Anisotropic Thermo-responsiveness and Organophilic/Hydrophilic Loading Capability
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Cited by 3 •
2016
We present a protocol to synthesize Janus microhydrogels composed entirely of the same base material, poly(N-isopropylacrylamide) (PNIPAAm), with a clearly compartmentalized structure base on the phase separation of a supersaturated NIPAAm monomer solution. The synthesized Janus microhydrogels show unique properties such as anisotropic thermo-responsiveness and organophilic/hydrophilic loading capability.
09:26
Planar Gradient Diffusion System to Investigate Chemotaxis in a 3D Collagen Matrix
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Cited by 3 •
2015
Cell migration is an important part of human development and life. In order to understand the mechanisms that can alter cell migration, we present a planar gradient diffusion system to investigate chemotaxis in a 3D collagen matrix, which allows one to overcome modern diffusion chamber limitations of existing assays.
10:12
Flash NanoPrecipitation for the Encapsulation of Hydrophobic and Hydrophilic Compounds in Polymeric Nanoparticles
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Cited by 72 •
2019
Flash NanoPrecipitation (FNP) is a scalable approach to produce polymeric core-shell nanoparticles. Lab-scale formulations for the encapsulation of hydrophobic or hydrophilic therapeutics are described.
FAQs
The gel layer creates a hydrated barrier around the dosage form after gastrointestinal fluid enters the polymer. Drug that has dissolved inside the matrix must pass through this layer before entering surrounding fluid. Because the layer moderates movement outward, it can slow diffusion and extend drug release compared with immediate exposure of the drug to gastrointestinal fluid.
These processes contribute in sequence and may overlap. Water uptake hydrates the polymer, while polymer chains relax and support gel-layer formation. Dissolved drug can then diffuse through the hydrated region. At the same time, gradual polymer erosion removes matrix material, so release may reflect both transport through the gel and loss of the surrounding structure.
Diffusion and erosion provide different pathways for drug release. Diffusion moves dissolved drug through the hydrated polymer, whereas erosion gradually reduces the matrix that contains it. Their combined contribution influences how consistently drug becomes available over time. Understanding this balance helps explain why hydrophilic matrices can moderate exposure rather than release the full dose immediately.
Gastrointestinal fluid supplies the aqueous environment needed for the matrix to begin hydrating. Water penetrates the polymer, polymer chains relax, and a gel layer develops at the dosage-form surface. Drug dissolution and movement can then proceed through that hydrated region, linking fluid contact directly to the onset and progression of controlled release.
Evaluation follows the release events created by fluid contact: observe water penetration, hydration and swelling, gel-layer development, drug dissolution, movement through the gel, and gradual polymer erosion. These stages provide a framework for interpreting how the dosage form releases drug over time and for assessing whether the matrix moderates exposure as intended.
This approach is valuable when formulation development aims to provide controlled drug release from an oral dosage form. By moderating release, it may help maintain drug exposure over time and reduce dosing frequency. Researchers can also use the platform to develop and evaluate formulations, while clinical pharmaceutics connects its release behavior with oral delivery goals.