¹H MAS NMR 法による重水中のエポキシ硬化反応解析

抄録

We investigated the curing reaction between epoxy and amino groups for water soluble polyglycerol polyglycidyl ether (PGPE) and poly ε-L lysine (ε-PL). The curing reaction was detected by ¹H MAS NMR in deuterium oxide solution. The ¹H signal intensity of epoxy group changed with time elapsed. The change of the normalized intensity with reaction time was least-square fitted by assuming a simple bimolecular reaction. The obtained reaction rates were 0.026 min⁻¹ at 50°C and 0.113 min⁻¹ at 80°C. The estimated activation energy, approximately 46 kJ mol⁻¹, showed a satisfactory agreement with the previously obtained value.