Journal
BIOMACROMOLECULES
Volume 5, Issue 6, Pages 2479-2486Publisher
AMER CHEMICAL SOC
DOI: 10.1021/bm049578h
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The synthesis and characterization of a photocurable biodegradable elastomer as a potential biomaterial for the delivery of thermosensitive drugs are described. The clastomer was prepared from UV initiated cross-linking of an acrylated star-poly(is an element of-caprolactone-co-D,L-lactide) prepolymer. The influence of the molecular weight of the acrylated prepolymer on the final elastomer mechanical and thermal properties was determined. The glass-transition temperature of the elastomers was independent of the prepolymer molecular weight and was from -6 to -8 degreesC. The Young's modulus and stress at break of the elastomers was proportional to the inverse of the prepolymer molecular weight, while the strain at break increased in a linear fashion with the prepolymer molecular weight. Over a degradation period of 12 weeks in phosphate buffered saline, the elastomers exhibited little mass loss, appreciable mechanical strength loss, and little dimensional or strain at break change.
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