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Prepolymer structures with n repetitive PTHF units, terminal acrylate groups (left) and schematic polymer network PTHF-PA 1-4 from the corresponding PTHF-DA 1-4 with increasing numbers of repetitive units (n= 13, 34, 52, 67) from a–d. Bold arrow: polyacrylate backbone; dashed line: PTHF-spacer unites; double arrows: backbone network connection.
