Characterization and ionic conductivity of an amorphous comblike polymer II: Based on ethylene-maleic anhydride copolymer backbone with monoethyl ether of poly(ethylene glycol) of M_W = 550 as side chain

摘要

Using a graft modification method, a comblike polymer host (CBPE550) was synthesized by reacting monomethyl ether of poly(ethylene glycol) (PEGMA) with ethylene-maleic anhydride copolymer (EMAC) and endcapping the residual carboxylic acid with methanol. The product was characterized by IR and elementary analysis. Result showed that the product was amorphous and semi-ester product is accord with reaction equation. There were two peaks in the plot of the ionic conductivity againsy Li salt concentration. The plot of log #sigma# against 1/(T-T_o) shows a dual VTF behavior when using the glass transition temperature of PEO of side chain as T#beta#. The comblike polymer is a white rubbery solid. It can be well-dissolved in acetone.