含Si－H功能键聚硅氧烷／聚芳砜嵌段型高分子配体的合成与表征

Synthesis and Characterization of Polysulfone-polysiloxane Containing Si-H Functional Bond

利用酚羟基封端的聚砜和二氯封端、含Ｓｉ－Ｈ功能键的硅氧烷低聚体合成交替偶联嵌段共聚物。由于Ｓｉ－Ｈ键在碱性介质中不稳定，二氯封端的聚硅氢烷被选作嵌段基元．所得聚合物用ＩＲ、Ｈ￣１ＮＭＲ、ＧＰＣ和ＴＥＭ作了表征，结果表明嵌段合成是成功的．通过Ｓｉ－Ｈ键与烯键的加成反应在该共聚物的分子链上引入了碱性侧基而得到一系列嵌段型高分子配体．

Alternating block copolymers have been synthesized from dihydroxyl-terminated polysulfone and dichloro-terminated polysiloxane oligomers containing Si-Hbond. Due to the instability of Si-H bond in basic media, dichloro-terminated polysiloxaneswere selected as the segments of the copolymer. The block copolymers were characterizedwith FTIR、H￣1NMR、GPC and TEM , which indicated the syntheses were successful.By theadditive reaction of Si-H bond with alkene, some basic side-groups such as pyridine,which actas the fifth ligand of metal complex,were added onto the main chain of the copolymers.