交联聚膦腈中空微球的可控制备  

Controllable Preparation of Hollow Cross-Linked Polyphosphazene Microspheres

作　　者：付建伟[1] 王明环[1] 王旭哲[1] 袁金苹[1] 张超[1] 许群[1] 

机构地区：[1]郑州大学材料科学与工程学院,郑州450001

出　　处：《高分子通报》2011年第8期79-84,共6页Polymer Bulletin

基　　金：国家自然科学基金(No.51003098;20974102);国家博士后科学基金(20100480055)

摘　　要：以分散聚合法制备的聚苯乙烯微球为模板,以六氯环三膦腈、4,4′-二羟基二苯砜为共聚单体,三乙胺为缚酸剂,室温条件下制备出了聚苯乙烯/聚膦腈(核/壳)复合微球,然后用四氢呋喃处理该复合微球,得到聚膦腈中空微球。利用红外光谱、元素分析、扫描电镜及投射电镜对所制备中空微球的结构及形貌进行了表征。结果表明,所制备聚膦腈中空微球具有高度交联的化学结构,其中空核直径依赖于所使用模板的粒径,中空微球的壁厚可通过调节模板与共聚单体的质量配比进行控制。另外,还提出了该中空微球的形成机理。Using hexachlorocyclotriphosphazene （HCCP） and 4, 4＇-sulfonyldiphenol （BPS） as comonomers, triethylamine（TEA） as acid-acceptor, and polystyrene （PS） microspheres prepared through dispersion polymerization as template, PS/polyphosphazene （core/shell）composite microspheres were firstly prepared at room temperature. The as-prepared composite microspheres were then etched with tetrahydrofuran to remove PS core materials, and hollow polyphosphazene microspheres were successfully obtained. The morphology and structure of the hollow microspheres were characterized by FTIR,EA, SEM and TEM. Results showed that the hollow polyphosphazene microspheres possessed highly cross-linked chemical structure. The hollow core size of the hollow microspheres was depended on the diameter of as-used PS template, and the shell thickness could be controlled by adjusting the mass ratio of PS to comonomers. In addition, the formation mechanism of the hollow polyphosphazene microspheres was proposed.

关 键 词：聚膦腈 中空微球 自组装 模板 

分 类 号：O631.3[理学—高分子化学]