Resonance Effect Polymerization of p-Substituted Monomers

The obtained amide has a weak electron-donating amide linkage, and the phenyl ester moiety of the amide is more reactive than that of 22a. Thus, the next monomer would selectively react with the phenyl ester moiety of the amide. Growth would continue in a chain polymerization manner by the selective reaction of 22a with the polymer terminal phenyl ester moiety. 

Block copolymers of aromatic polyamide and conventional coil polymer are prepared by the reaction of the polymer end group of the polyamide with 

Another approach to block copolymers of the aromatic polyamide and coil polymer is the macroinitiator method the chain-growth condensation polymerization of 22a from a macroinitiator derived from coil polymer. A diblock 

An interesting thing is that the polyether with low polydispersity from chain-growth condensation polymerization possessed higher crystallinity than the one with broad molecular weight distribution from conventional step-growth condensation polymerization. The XRD pattern of the former polymer showed a stronger intensity, and the DSC profile showed the 

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