Epoxy ring polymerisation

These have also been characterised by GC-MS and electrospray ionisation [28]. It was shown that epoxy ring opening was achieved at low temperatures and within short reaction times. Several reactions were found to occur simultaneously and were involved in the early polymerisation process, leading to fast catalyst deactivation in solution, chlorination of 3-glycidoxyproply-tri-methoxysilane organic groups and titanium dispersion inside precursor sols. 

Recently, Tanaka et. al developed the gelation model for the polymerisation of epoxy and diamine including the effects of unequal reactivity and intramolecular reaction, where the ring-forming parameter was introduced to characterise the competition between intermolecular and intramolecular reactions.(Tanaka, et al., 2009) This section is concerned with the gelation model developed and its application to the polymerisation of polyoxypropylene (POP) diamine and the diglycidyl ether of bisphenol A (DGEBA), RAj + R B2 type polymerisation. 

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