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A series of acrylate processing aid(ACR)-based ionomers with different lanthanide(La(Ⅲ)) ion and acid contents were synthesized,and the interaction between ionomer and zinc stearate(ZnSt_2) was investigated immediately after thermally annealing the ionomer/ZnSt_2(3/1 in weight) mixtures at 180℃.The results revealed that the ion groups in ionomer have a strong interaction with ZnSt_2.The annealed mixtures contained hot alcohol extractable and unextractable ZnSt_2.The melting of ZnSt_2 and the thermal behavior of the ionomer in the annealed mixtures were seriously influenced by the contents of La(Ⅲ) and acid in the ionomers.The ionomer containing 0.25 mmol/g acid and 0.37 mmol/g La(Ⅲ) has a detectable cluster phase.Annealing its ZnSt_2 mixture could break down the cluster phase and lower glass transition temperature of the ionomer matrix.However,washing away the extractable ZnSt_2 led to the reappearance of the cluster transition temperature and return of the glass transition temperature of matrix to the original position.
A series of acrylate processing aids (ACR) -based ionomers with different lanthanide (La (III)) ion and acid contents were synthesized, and the interaction between ionomer and zinc stearate (ZnSt_2) was investigated immediately after thermally annealing the ionomer / ZnSt 2 ( 3/1 in weight) mixtures at 180 ° C. The results revealed that the ion groups in ionomer have a strong interaction with ZnSt_2. The annealed mixtures contained hot alcohol extractable and unextractable ZnSt_2. The melting of ZnSt_2 and the thermal behavior of the ionomer in the annealed mixtures were seriously affected by the contents of La (III) and acid in the ionomers. The ionomer containing 0.25 mmol / g acid and 0.37 mmol / g La (III) has a detectable cluster phase. Annealing its ZnSt_2 mixture could break down the cluster phase and lower glass transition temperature of the ionomer matrix. Because, washing away the extractable ZnSt_2 led to the reappearance of the cluster transition temperature and return of the glass transition tem perature of matrix to the original position.