聚苯乙烯掺溴塑料靶材料的研制

PREPARATION AND STUDING ON PLASTIC TARGET MATERIALS OF BROMINATED POLYSTYRENE

介绍了部分溴代聚苯乙烯（Ｂｒ－ＰＳ）靶材料的制备与特性。内容涉及市售聚苯乙烯（ＰＳ）的制备型凝胶渗透色谱（ＧＰＣ）分级，窄相对分子量分布ＰＳ与Ｂｒ２间的亲电反应及其动力学特性，Ｂｒ－ＰＳ粗产物的纯化，以及Ｂｒ－ＰＳ样品的结构与性能分析。所制备的Ｂｒ－ＰＳ聚合物质均相对分子量Ｍｍ约８万－１５万，相对分子量分布ｄ＜１．１，掺溴原子百分含量为０５％－４．５％，能较好地满足激光掺杂靶丸的制备要求。文中还简要讨论了材料的应用。

The paper presents the preparation of partially brominated polystrene, including fractionation of commercial PS, electrophilic.reaction between narrow molecular mass distribution PS and Br2,and purification of crude Br-doped PS. The composition, structure and properties of partially brominated polystyrene are studied by means of element analysis, GPC, IR, 'C-NMR, [η] and TCA.