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Synthesis and characterization of novel degradable photocrosslinked poly(ether-anhydride) networks

✍ Scribed by Beom Soo Kim; Jeffrey S. Hrkach; Robert Langer

Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
123 KB
Volume
38
Category
Article
ISSN
0887-624X

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✦ Synopsis

New degradable poly(ether-anhydride) networks were synthesized by UV photopolymerization. Dicarboxylated poly(ethylene glycol) (PEG) or poly(tetramethylene glycol) (PTMG) was reacted with an excess of methacrylic anhydride to form dimethacrylated macromers containing anhydride linkages. The percent of conversion for the macromer formation was more than 80% at 60 Β°C after 24 h. 1 H NMR and IR spectroscopies show the presence of anhydride linkages in the macromer. In vitro degradation studies were carried out at 37 Β°C in PBS with crosslinked polymer networks formed by UV irradiation. All PEG-based polymers degraded within 2 days, while PTMG-based polymers degraded by 50% of the initial weight after 14 days.

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