Abstract
Hydrogels are divided into nanogels and micellar gels. Nanogels are further divided into physically cross-linked and chemically cross-linked, while micellar gels are divided into micelle-incorporated gels, physically bonded, and covalently bonded gels. Micellar gels can be synthetic or peptide based. Peptide-based gels can be β-sheet forming or surfactant like. The presence of a large fraction of water in the structure of nanogels increases drug-loading capacity, compared with block-copolymer micelles. Micellar gels can increase duration of drug release, reduce gelation time, and improve degradation rate. Due to their high water content, high permeability, resilience, and degradability, nanogels and micellar gels are used extensively as a substitute for soft tissues in medicine, as a vehicle for drug delivery, and as water absorbent in oil recovery and agriculture.
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Acknowledgements
This work was supported by grants to E. Jabbari from the National Science Foundation (CBET0756394, CBET0931998, DMR1049381); the National Institutes of Health (DE19180), and the Arbeitsgemeinschaft Fur Osteosynthesefragen (AO) Foundation (C10-44J).
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Moeinzadeh, S., Jabbari, E. (2014). Nanostructure Formation in Hydrogels. In: Bhushan, B., Luo, D., Schricker, S., Sigmund, W., Zauscher, S. (eds) Handbook of Nanomaterials Properties. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31107-9_62
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DOI: https://doi.org/10.1007/978-3-642-31107-9_62
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