摘要
研究了铜 ( )盐催化溴代苯酚的均相聚合反应、多相聚合反应过程中聚合反应产率和分子量与反应时间的关系 ,利用溴离子选择性电极连续测定反应过程中溴离子浓度的变化 .并利用 ESR(电子自旋共振 )检测到均相聚合反应过程中苯氧自由基的存在 ,由此提出了铜 ( )
The copper( ) -catalyzed polymerization of2 ,4 ,6-tribromophenol by homogeneous and heterogeneous reaction was studied.The dependence of polymers yield and relative molecularmasson the reaction time wasinvestigated.The variance ofbromide concentration in the polymerization was measured continuously by bromide selective elec- trode.The existence of phenoxy radical during the homogeneous polymerization process was confirmed by ESR( Electron Spin Resonance) measurement.The quinol ether equilib- rium polymerization mechanism was proposed for the copper( ) -catalyzed homogeneous polymerization of 2 ,4 ,6tribromophenols.
关键词
聚合反应
均相聚合
溴代苯酚
铜盐
催化
Polymerization
Reaction mechanism/Poly ( 2 ,6-dibromophenylene oxide)
2 ,4 ,6-Tribromophenol
