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Synthesis of Stimuli-responsive Nanogels using Aqueous One-step Crosslinking and Co-nanopolymerization
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A novel starch-based stimuli-responsive nanosystem for theranostic applications
Nahid Poorgholy1, Bakhshali Massoumi1, Mehdi Jaymand2
1Department of Chemistry, Payame Noor University, P.O. BOX: 19395-3697, Tehran, Iran.
International Journal of Biological Macromolecules
|January 19, 2017
Summary
Researchers developed a novel temperature-responsive magnetic nanohydrogel (MNHG) using functionalized starch and iron oxide nanoparticles. This smart nanosystem shows potential for theranostic applications, including drug delivery.
Area of Science:
- Polymer Chemistry
- Nanotechnology
- Materials Science
Background:
- Stimuli-responsive polymers are crucial for advanced drug delivery systems.
- Magnetic nanoparticles offer unique properties for theranostics.
- Integrating these components can create sophisticated nanosystems.
Purpose of the Study:
- To synthesize and characterize a novel stimuli-responsive polymeric nanosystem for theranostic applications.
- To create a temperature-responsive magnetic nanohydrogel (MNHG) by functionalizing starch and incorporating iron oxide nanoparticles.
- To evaluate the drug-loading and release capabilities of the synthesized MNHG.
Main Methods:
- Starch modification with itaconic anhydride to create starch-IA macromonomer.
- Adsorption of starch-IA onto iron oxide nanoparticles (Fe3O4 NPs).
- Copolymerization with N-isopropylacrylamide (NIPAAm) via free radical polymerization to form MNHG.
- Characterization using FTIR, thermal analysis, and assessment of magnetic properties.
- Evaluation of methotrexate (MTX) loading capacity and stimuli-responsive drug release.
Main Results:
- Successful synthesis of a temperature-responsive magnetic nanohydrogel (starch-g-PNIPAAm/Fe3O4 MNHG).
- Demonstrated high methotrexate loading capacity (approximately 74%).
- Exhibited stimuli-responsive drug release behavior, indicating potential for controlled delivery.
Conclusions:
- The synthesized MNHG possesses smart physicochemical properties suitable for theranostic applications.
- The combination of temperature responsiveness and magnetic properties makes it a promising candidate for targeted drug delivery and imaging.
- Further research into its theranostic potential is warranted.
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