Hydrogels. Biological properties and applications - Rilegato

Rilegato

ISBN 10: 8847011035 ISBN 13: 9788847011038

Casa editrice: Springer Verlag, 2008

Riassunto

Hydrogels are a particular class of compounds of which the major constituent is wa­ ter. In fact, water is present in the hydrogel up to 90% and is contained in a scaffold which is generally polymeric and obviously hydrophilic. As a result, hydrogels re­ semble each other even though obtained from different polymers. Nevertheless, the polymeric matrix gives particular characteristics to the hydrogel leading to applica­ tions in different fields. Water is the main element of the human body, thus hydrogels are excellent struc­ tures to favourably shelter proteins, cells etc. , without altering their characteristics and properties. This is why hydrogels are mainly designed and synthesized for their usein thebiologicalfield;hence the name biohydrogels. Their propertiespoint totheir use as scaffolds for stem cells which has turned out to be a very promising technique for tissue and organ regeneration. For this reason their investigation falls within the Biomaterials Science. Paradoxically, the conceptual simplicity of hydrogelsupto nowhas led to a super­ ficialstudy of their chemistry, chemical physics and mechanics preventing their wider application in the human body due to a lack of knowledge of biological component interactions. For example, it is not clear, yet, how to store hydrogels without alter­ ing their characteristics. In fact, hydrogels re-hydrated after lyophylization or oven drying, generally show corrupted properties once swollen in water, in comparison with their native counterparts.

Su questo libro

Dalla quarta di copertina

The studies on Biohydrogels have had a rapid, exponential evolution in the last

decades. Starting from one of the first applications of hydrogels in surgery,

polyvinylalcohol crosslinked with formaldehyde under the trade name of Ivalon, we

passed through PolyHema hydrogels as contact lens materials, hydrophilic

polyurethanes (HPU), biodegradable hydrogels for both reconstructive surgery and

pharmaceutical delivery systems, and finally more recently, one decade old, the

thermoreversible and transient network hydrogels. Of course all these classes of

hydrogels have been always and continuosly studied, improving their performance and

field of applications. Recently, most of them have been used as scaffolds for cells,

even stem ones, for regenerative applications (tissue engineering). Nevertheless

hydrogels are odd materials and many studies still have to be carried out to fully

understand their behaviour from mechanical, physicochemical and biological point of

view.

Dettagli dell'edizione

• Editore: Springer Verlag
• Data di pubblicazione: 2008
• Lingua: Inglese
• ISBN 10: 8847011035
• ISBN 13: 9788847011038
• Rilegatura: Copertina rigida
• Numero edizione: 1
• Numero di pagine: 210
• Redattore: Barbucci R.
• Contatto del produttore: Springer-Verlag GmbH; customerservice@springernature.com; ; Tiergartenstraße 17; Heidelberg; Baden-Württemberg; 69121; Germania