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Updated: May 20, 2026

Injectable Supramolecular Polymer-Nanoparticle Hydrogels for Cell and Drug Delivery Applications
Published on: February 7, 2021
Hydrogels as drug-delivery platforms: physicochemical barriers and solutions
Lamees B Alkayyali1, Osama A Abu-Diak, Gavin P Andrews
1Queen's University Belfast, School of Pharmacy, The Drug Delivery & Biomaterials Group, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, UK.
Hydrogels offer excellent biocompatibility for drug delivery but have weak mechanical strength. This review discusses challenges and solutions for using hydrogels in clinical practice.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Drug Delivery Systems
Background:
- Hydrogels exhibit high biocompatibility and water absorption, making them suitable for biomedical applications.
- Key limitations include low mechanical strength in the swollen state, hindering clinical use.
Purpose of the Study:
- To review the primary challenges impacting hydrogel implementation in clinical settings.
- To present potential solutions for overcoming hydrogel limitations.
Main Methods:
- Literature review of hydrogel properties and applications.
- Analysis of structural limitations and mechanical challenges.
- Exploration of strategies to enhance hydrogel performance.
Main Results:
- Identified low mechanical strength as a major obstacle for hydrogel applications.
- Highlighted biocompatibility and water sorption as advantageous properties.
- Discussed various approaches to improve hydrogel structural integrity.
Conclusions:
- Addressing mechanical weaknesses is crucial for the clinical translation of hydrogels.
- Further research into hydrogel modification can unlock their full potential in medicine.
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