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Water degradation of pHUBs. (a) Synthesis of four different types of pHUBs by simply mixing diisocyanates and diamines. (b) GPC curves showing water degradation of poly(6/9) and poly(7/9) in H2O/DMF = 5:95 after 24 h incubation at 37 °C. (c) Plot showing molecular weight reduction of four polymers drawn in (a) in H2O/DMF = 5:95 for various incubation time at 37 °C.
