【摘要】 质量比为 95 5的苯乙烯和 1 (2 叔丁基过氧异丙基 ) 3 异丙烯基苯 (D12 0 )在过氧化苯甲酰的引发下进行了本体共聚 ,红外光谱和 DSC分析表明 ,共聚物中保留了 D12 0的过氧键。在 PS和 EPDM的共混过程中加入了这种带过氧基团的聚苯乙烯 ,激光光散射、红外分析及溶解分离试验表明共混过程中同时发生了接枝反应和交联反应 ,分散相粒子的尺寸明显减小 ,接枝物起了增容作用。更多还原

【Abstract】 Styrene and tert butyl 3 isopropenylcumyl peroxide(D120) were copolymerized at the temperature below the decomposition temperature of the peroxy bond of D120. Melt mixing of PS/EPDM with or without PS co D120 was carried out at 205 ℃ in Brabender mixer. The blends were subjected to light scattering measurements. Decrease in the correlation distance showed the size reduction of the dispersed phase when PS co D120 was added. In this case the graft of PS onto EPDM was observed by IR anslysis.更多还原