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. 2016 Apr 19;8(4):150. doi: 10.3390/polym8040150

Figure 12.

Figure 12

Possible degradation mechanisms of polysulfone given: (a) crosslinking by phenylation of phenyl radical formed by cleavage of C–S bond; (b) intramolecular phenylation by hydrogen abstraction by the phenyl radical; (c) β-scission of isopropylidene radical following H-abstraction [31,33,35].