Styrene emulsion polymerization using an alkyl-9-BBN, synthesized by reacting 9-BBN（9-borabicyclo-[3.3.1]-nonane） and styrene, in an aqueous sodium dodecyl sulfate（SDS） solution was studied. Ultra-high-molecular-w...Styrene emulsion polymerization using an alkyl-9-BBN, synthesized by reacting 9-BBN（9-borabicyclo-[3.3.1]-nonane） and styrene, in an aqueous sodium dodecyl sulfate（SDS） solution was studied. Ultra-high-molecular-weight（〉 1.0 × 10~7） polystyrene was synthesized using a radical initiator formed through the aerobic oxidation of this alkyl-9-BBN in a high yield（〉 80%）. The kinetics of this emulsion polymerization of styrene with the alkyl-9-BBN was investigated. We confirmed that in the initial stage of the polymerization, the initial reaction rate followed first-order kinetics. The activation energy for this emulsion polymerization of styrene was approximately 56.2 kJ/mol.展开更多
通过CumC l/T iC l4/Py/IB活性正离子聚合反应体系制备了末端是叔氯基团的聚异丁烯,其经过脱氯化氢末端转化成异丁烯基,在9-BBN、氧气的存在下引发苯乙烯的自由基聚合,从而成功地合成了异丁烯和苯乙烯的嵌段聚合物.并用GPC,1H-NM R和UV...通过CumC l/T iC l4/Py/IB活性正离子聚合反应体系制备了末端是叔氯基团的聚异丁烯,其经过脱氯化氢末端转化成异丁烯基,在9-BBN、氧气的存在下引发苯乙烯的自由基聚合,从而成功地合成了异丁烯和苯乙烯的嵌段聚合物.并用GPC,1H-NM R和UV对所得聚合物进行了表征。展开更多
文摘Styrene emulsion polymerization using an alkyl-9-BBN, synthesized by reacting 9-BBN（9-borabicyclo-[3.3.1]-nonane） and styrene, in an aqueous sodium dodecyl sulfate（SDS） solution was studied. Ultra-high-molecular-weight（〉 1.0 × 10~7） polystyrene was synthesized using a radical initiator formed through the aerobic oxidation of this alkyl-9-BBN in a high yield（〉 80%）. The kinetics of this emulsion polymerization of styrene with the alkyl-9-BBN was investigated. We confirmed that in the initial stage of the polymerization, the initial reaction rate followed first-order kinetics. The activation energy for this emulsion polymerization of styrene was approximately 56.2 kJ/mol.
