Kinetics and Thermodynamics of the Ring Opening Reaction of Hexamethylcyclotrisiloxane

机译：六甲基环氧硅氧烷的开环反应的动力学和热力学

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The kinetics and the thermodynamic properties of the ring opening reaction of hexamethylcyclotrisiloxane (D3) were determined. The reaction obeys second order kinetics and is highly exothermic. Moreover, the reaction is irreversible and no side products were detected. The lithium silanolate which is produced in this reaction efficiently initiates the ring opening polymerization (ROP) of D3. This anionic polymerization reaction can be applied in synthesis of oligo- and polysiloxanes with a narrow molecular weight distribution. The reaction is quenched with chlorodimethylsilane (CDS) by forming endcapped monohydrido substituted oligo- or polysiloxanes.

机译：测定了六甲基环氯氧烷（D3）的开环反应的动力学和热力学性质。反应obeys第二阶动力学并高度放热。此外，反应是不可逆的，没有检测到侧面产物。在该反应中制备的硅烷酸锂有效启动D3的开环聚合（ROP）。这种阴离子聚合反应可用于合成寡聚和聚硅氧烷，具有窄的分子量分布。通过形成封端的单氢化胺取代的寡核苷酸或聚硅氧烷，用氯二甲基硅烷（CDS）淬灭反应。

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《American Institute of Chemical Engineers Annual Meeting》|2008年||共8页
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G. Witek; M. Brandstatter; R. Knauss;
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中图分类化学工业;
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1. Ring-Opening Reaction of Hexamethylcyclotrisiloxane with Tetrachlorosilane and Isomerization of the Product [J] . M. Zeldin, P. Mehta Journal of Inorganic and Organometallic Polymers . 1999,第1期

机译：六甲基环三硅氧烷与四氯硅烷的开环反应和产物的异构化
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Kinetics and Thermodynamics of the Ring Opening Reaction of Hexamethylcyclotrisiloxane

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