Types of bioresorbable polymers for medical applications - Durability and Reliability of Medical Polymers - page 24

*

*

n

OH

1.31 Polyvinyl alcohol.

hydrolysis of polyvinyl acetate. Vinyl alcohol does not exist in nature, since it
becomes acetaldehyde because of keto-enol tautomerism. PVa is composed
mainly of 1,3-diol units, with a very small amount of head-to-head 1,2-diol
units (Fig. 1.31). This material has a great number of applications in the
industrial field, and it is also bioresorbable and non-toxic. These features
make PVa suitable for biomedical applications; indeed, it has been tested for
the synthesis of PVA-based hydrogels or films for drug delivery (Matsumura,
2005).

1.9 References
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