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Relationship between the acid (COOH) content in the original PU formulation (Table S1) and the fraction of PU in supramolecular structures formed by (H12MDI)n+1DMPAn molecules, measured by SAXS, (Table 1, ϕ2/ϕtot) for PUD samples synthesized with polyether (soft segment) of Mn = 650 g mol–1 (blue circles), 1000 g mol–1 (green squares), and 2000 g mol–1 (red triangles).
