MSE-BioE+118+2011+L_20+DD+_+Hydrogels - MSE/BioE 118...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
MSE/BioE 118 Lecture #21 1. Hydrogels & Applications 2. Environmentally-Responsive Polymers Sol-Gel Transition Thermally-Responsive Hydrogels What Are Hydrogels? Insoluble hydrophilic polymer networks Chemical gels Covalently cross-linked during or after polymer synthesis Critical Mc, ‘infinite’ MW network, single macromolecule Physical gels Associative network / hydrogen, ionic, hydrophobic bonding Highly hydrated – mostly water High swelling ratio, can contain > 99% water, high Q Low volume fraction of polymer Water structure Very low interfacial energy in water Low contact angle with water Hydrogel Applications Industrial products Marine anti-fouling, anti-fog, lubricious coatings Consumer goods Diaper filling, moisture retention agents Food Gelatin, modified carbohydrates Biology Chromatography, cell culture Medicine Contact lenses, wound dressing, drug delivery, etc…
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Wound dressing Contact lenses Drug or biologic delivery Non-fouling or lubricious coatings Space-filling agents Sealants, adhesives, non-adhesives Tissue engineering scaffolds
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 8

MSE-BioE+118+2011+L_20+DD+_+Hydrogels - MSE/BioE 118...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online