HER Materials Synthesis and Characterisation

On the basis of theoretical calculations and also from the gas chromatography (GC) analysis, hydroxyl number and nuclear magnetic resonance (NMR) analysis results, it has been confirmed that the reactive high MW diol present in the technical grade materials has the structure  

For FiER TG-210, TG-225 and TG-250 materials, the reactive high MW diol has predominantly n = 1 and is present at approximately 7, 17 and 32 weight percent, respectively. With higher molar ratios of ethylene carbonate resorcinol, high MW diol with n = 1 and 2, having MW of 286 and 374, respectively, are observed to be present. In HER LIQ, the HMW diol monomers were estimated to be as high as 87 weight percent. 

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