Physical properties of ethylene ionomers

an attempt was made to clarify the effect of crystalline phase on the mechanical properties of ethylene ionomer. Dynamic mechanical measurements 

The a relaxation exhibits a thermal history that is, in the tan 6 curve of the iionomer quenched from 80 °C for 30 min to room temperature, the a relaxation disappeared and then, by ageing at room temperature for a long time, the tan 6 curve was restored to that of the original specimen. 

As mentioned above, the lower temperature DSC peak was attributed to the melting of the crystallites formed by annealing and the higher peak to that by cooling. Ionic aggregates, which play the role of crosslinking, hindered 

054MAA means copolyfethylene-methacrylic acid) with acid content = 0.054, and xZn and. vNa mean the degree of neutralization with zinc and sodium cations, respectively. 

0 motions of segments in amorphous part of the polyethylene matrix (the glass transition of the phase-separated polyethylene matrix) 

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