Báo cáo khoa học: Hydrogels as Drug Delivery Systems (Hệ dẫn truyền thuốc Hydogels)
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I. VIEW OF GELS AND HYDROGELS – FUNDAMENTAL CONCEPTIONS<br />
1.4. <strong>Hydrogels</strong> cl<strong>as</strong>sification<br />
Cl<strong>as</strong>sification Contents Cl<strong>as</strong>sification Contents<br />
Origin<br />
- Natural<br />
- Synthetic<br />
Cross-linking<br />
method<br />
- Chemical (or covalent)<br />
- Physical (or noncovalent)<br />
Ionic charge (b<strong>as</strong>ed<br />
on the nature of the<br />
pendent groups)<br />
- Neutral<br />
- Anionic<br />
- Cationic<br />
- Ampholytic<br />
Component (b<strong>as</strong>ed<br />
on the method of<br />
preparation)<br />
- Homopolymer<br />
- Copolymer<br />
- Multipolymer<br />
- Interpenetrating<br />
Water content of<br />
degree of swelling<br />
- Low swelling<br />
- Medium<br />
swelling<br />
- High swelling<br />
- Superabsorbent<br />
Function (b<strong>as</strong>ed on<br />
the organization of<br />
the monomers)<br />
- Biodegradable or<br />
Nonbiodegradable<br />
- Stimuli responsive<br />
- Superabsorbent<br />
Network Structure<br />
(porosity)<br />
- Nonporous<br />
- Microporous<br />
- Macroporous<br />
- Superporous<br />
Mechanism<br />
controlling the<br />
drug rele<strong>as</strong>e<br />
- Diffusion<br />
- Swelling<br />
- Chemically controlled<br />
- Environment responsive<br />
- Journal of Biomaterials and Nanobiotechnology. 2012, 3, 185-199<br />
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