用固体^(13)C-NMR表征丙烯酸酯类抗冲型改性剂的核壳结构  

Characterization of core-shell structure of acrylic resin impact modifier by ^(13)C-NMR

作　　者：沈国栋[1] 唐颂超[1] 李远[2] 张德震[1] 罗会俊[3] 潘铁英[3] 史新梅[3] 

机构地区：[1]华东理工大学材料科学与工程学院,上海200237 [2]华东理工大学石油化工学院,上海201512 [3]华东理工大学分析测试中心,上海200237

出　　处：《合成橡胶工业》2003年第2期91-93,共3页China Synthetic Rubber Industry

摘　　要：采用固体13C-NMR对具有核壳结构的丙烯酸酯类抗冲型改性剂(ACR)中的聚甲基丙烯酸甲酯(PMMA)进行了测试。结果表明,ACR中聚丙烯酸丁酯(PBA)核与PMMA壳具有良好的相容性并形成了中间相,由PMMA旋转坐标系中自旋晶格弛豫时间得出PMMA中间相占总PMMA的摩尔分数为23%,由自旋-自旋作用时间得出PMMA中间相与非中间相摩尔比为3/7。13C-NMR analysis of poly(methyl methacrylate)(PMMA) in acrylic imp ac t modifier indicated that core of poly(butyl acrylate) and shell of PMMA showed good compatibility and a sort of interphase was developed.The result inferred by spin-lattic relaxation in the rotating frame suggested that the total mass fra ction of PMMA in the interphase was about 23%,and the ratio of PMMA in interpha se and non-interphase was 3/7 according to spin-spin interaction.

关 键 词：固体^13C-NMR 表征 丙烯酸酯类树脂 抗冲型改性剂 核壳结构 核磁共振 

分 类 号：TQ314.24[化学工程—高聚物工业]