A modified method of preparing crown functionalized linear polysiloxane has been described. 4'-Allyldibenzo-18-crown-6 was subjected to hydrosilylation with methyldichlorosilane, followed by polycondensation with ...A modified method of preparing crown functionalized linear polysiloxane has been described. 4'-Allyldibenzo-18-crown-6 was subjected to hydrosilylation with methyldichlorosilane, followed by polycondensation with silanol-terminated polydimethylsiloxane to give the title crown functionalized linear polysiloxane. The transport properties of sodium, potassium, and ammonium salt through a bulk liquid membrane system using the new type of crown functionalized linear polysiloxane as a carrier were investigated. It is worthy to point out that the carrier can be used repeatedly at least six runs with no apparent change in the transport rate of potassium ion.展开更多
Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--te...Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--terminated polydimethylsiloxane. It was found that the polysiloxanes could be used as carriers in bulk liquid membrane to transport ions. Factors influencing transport rate have been investigated.展开更多
基金This work was supported by the Natural Science Foundation of Hubei Province,China
文摘A modified method of preparing crown functionalized linear polysiloxane has been described. 4'-Allyldibenzo-18-crown-6 was subjected to hydrosilylation with methyldichlorosilane, followed by polycondensation with silanol-terminated polydimethylsiloxane to give the title crown functionalized linear polysiloxane. The transport properties of sodium, potassium, and ammonium salt through a bulk liquid membrane system using the new type of crown functionalized linear polysiloxane as a carrier were investigated. It is worthy to point out that the carrier can be used repeatedly at least six runs with no apparent change in the transport rate of potassium ion.
文摘Linear polysiloxanes with pendant benzo-15-crown-5 moieties have been synthesized from 3'--or 4'--allylbenzo--15--C--5 via hydrosilylation of methyldichlorosilane, followed by polycondensation with silanol--terminated polydimethylsiloxane. It was found that the polysiloxanes could be used as carriers in bulk liquid membrane to transport ions. Factors influencing transport rate have been investigated.
