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New insights into the cross-linking and degradation mechanism of Diels–Alder hydrogels

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Kirchhof, Susanne ; Strasser, Andrea ; Wittmann, Hans-Joachim ; Messmann, Viktoria ; Hammer, Nadine ; Goepferich, Achim ; Brandl, Ferdinand
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Date of publication of this fulltext: 15 Jan 2015 14:33


Eight-armed poly(ethylene glycol) was functionalized with furyl and maleimide groups. The two macromonomers were cross-linked by Diels–Alder (DA) reactions and the degradation behavior of the formed hydrogels was investigated. UV spectroscopy showed that maleimide groups were subject to ring-opening hydrolysis above pH 5.5, with the reaction rate depending on the pH and temperature. As a result ...


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