Microcapsules responsive to pH and temperature: synthesis, encapsulation and release study
نویسندگان
چکیده
منابع مشابه
Controlling release from pH-responsive microcapsules.
We report a microfluidic approach to produce monodisperse pH-responsive microcapsules with precisely controlled release behavior. The solid microcapsule shells are composed of a biocompatible pH-responsive polymer and robustly encapsulate an active material; however, when exposed to a trigger pH, the shells degrade and ultimately release the microcapsule contents. We control the trigger pH by u...
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Microcapsules made of biopolymers are of both scientific and technological interest and have many potential applications in medicine, including their use as controlled drug delivery devices. The present study makes use of the electrostatic interaction between polycations and polyanions to form a multilayered microcapsule shell and also to control the loading and release of charged drug molecule...
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We report on the characterisation of pH-responsive polyelectrolyte microcapsules based on the measurement of their electrical impedance. A microfabricated impedance spectrometer was used to measure the properties of individual capsules. We show the ability of the system to discriminate between different capsule compositions and detect changes in size and dielectric properties of pH responsive m...
متن کاملFlow of pH-responsive microcapsules in porous media
This article investigates the use micro-capsules, containing a gelling agent hydroxypropyl cellulose (HPC), to alter flow paths in porous media. The aim is to preferentially block-off high permeability regions, thereby diverting the flow into adjacent un-swept low permeability regions. Micro-capsules with 2 – 7 μm in diameter, were made by polymer precipitation through solvent evaporation using...
متن کاملEncapsulation of Food Components and Bioactive Ingredients and Targeted Release
The potential utilization of encapsulation techniques in food, pharmaceutical and agricultural products preparation, presents a new alternative for complementary technologies such as targeting delivery vehicles and carriers for active food ingredients. Encapsulation could be accomplished by different techniques like: simple or complex coacervation, emulsification technique, phase separation, sp...
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ژورنال
عنوان ژورنال: SN Applied Sciences
سال: 2019
ISSN: 2523-3963,2523-3971
DOI: 10.1007/s42452-019-0371-1