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A novel divinyl ether was synthesized by a convenient method with high yield.Then the divinyl ether was combined with 2- hydroxyethyl methacrylate and acrylic acid,respectively,generating difunctional polymeric crosslinkers with(hemi)acetal structure that was labile in acid.The chemical structures of the divinyl ether and crosslinkers were confirmed by ~1H NMR and elemental analysis.The crosslinkers were employed in free-radical polymerization to prepare polymer gel and gel particles. Due to the(hemi)acetal structure in the crosslinking segment,the polymer gel and particles exhibited degradable ability in strong acid.
A novel divinyl ether was synthesized by a convenient method with high yield. Chen the divinyl ether was combined with 2-hydroxyethyl methacrylate and acrylic acid, respectively, generating difunctional polymeric crosslinkers with (hemi) acetal structure that was labile in acid.The chemical structures of the divinyl ether and crosslinkers were confirmed by ~ 1H NMR and elemental analysis. Crosslinkers were employed in free-radical polymerization to prepare polymer gel and gel particles. Due to the (hemi) acetal structure in the crosslinking segment, the polymer gel and particleative degradable ability in strong acid.