Novel Latent Catalyst for Ring-Opening Polymerization of 1,3-Benzoxazines Triggered by a Dual Ionic/Non-ionic Monomer Partnership

We report unraveling the catalytic effect of N-activatedbenzoxazinemonomers on the ring-opening polymerization of simple 1,3-benzoxazine.A novel series of ionic and neutral benzoxazine monomer couples weresynthesized and thoroughly characterized using cutting-edge X-rayand spectroscopic techniques. Specially designed monomers act as latentcatalyst systems that remain dormant at room temperature but becomeactivated during heating. This two-stage process involves the detachmentof chloroalkane and the opening of the oxazine ring, significantlyreducing the ROP temperature. To shed new light on the catalytic performanceof ionic monomers, simultaneous Fourier transform infrared and thermogravimetrymeasurements were conducted, providing a comprehensive understandingof the thermal transformation products and revealing the immense catalyticpotential and effectiveness of ionic benzoxazines.

Automated summary

We investigated the catalytic effect of N-activatedbenzoxazinemonomers on the ring-opening polymerization of 1,3-benzoxazine. A series of novel ionic and neutral benzoxazine monomers was synthesized and characterized using advanced X-ray and spectroscopic techniques. These specially designed monomers act as latent catalyst systems that are activated during heating, significantly reducing the ROP temperature. We conducted simultaneous Fourier transform infrared and thermogravimetry measurements to study the catalytic performance of ionic monomers, revealing their immense potential and effectiveness.