Synthesis of monodisperse α-hydroxypoly(styrene) in hydrocarbon media using a functional organolithium

Adam J. Meuler; Mahesh K. Mahanthappa; Marc A. Hillmyer; Frank S. Bates

doi:10.1021/ma0623338

Synthesis of monodisperse α-hydroxypoly(styrene) in hydrocarbon media using a functional organolithium

Adam J. Meuler, Mahesh K. Mahanthappa, Marc A. Hillmyer, Frank S. Bates

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Abstract

Synthesis of 3-triisopropylsilyloxy-1-propyllithium (TIPSOPrLi) and the characterization of its activity in anionic styrene polymerizations at 40 °C in cyclohexane was reported. The TIPSOPrLi initiator was used to prepare α-hydroxypoly(styrene) in cyclohexane with narrower polydispersity. The results show that the polydispersity index for TIPSO-PS is higher than the measured polydispersity indices for the TIPSO-PS samples with M _n≥6.8kg/mol. The narrower molecular weight distribution of the TIPSO-PS is due to an increase in the rate of styrene initiation an the enhanced initiation state is due to a reduction in intermolecular association. 13% of degree of functionality values (F_n) of 1.0 for all the polyesterene samples reveal that TIPS group is present on each polyesterene chains.

Original language	English (US)
Pages (from-to)	760-762
Number of pages	3
Journal	Macromolecules
Volume	40
Issue number	3
DOIs	https://doi.org/10.1021/ma0623338
State	Published - Feb 6 2007

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title = "Synthesis of monodisperse α-hydroxypoly(styrene) in hydrocarbon media using a functional organolithium",

abstract = "Synthesis of 3-triisopropylsilyloxy-1-propyllithium (TIPSOPrLi) and the characterization of its activity in anionic styrene polymerizations at 40 °C in cyclohexane was reported. The TIPSOPrLi initiator was used to prepare α-hydroxypoly(styrene) in cyclohexane with narrower polydispersity. The results show that the polydispersity index for TIPSO-PS is higher than the measured polydispersity indices for the TIPSO-PS samples with M n≥6.8kg/mol. The narrower molecular weight distribution of the TIPSO-PS is due to an increase in the rate of styrene initiation an the enhanced initiation state is due to a reduction in intermolecular association. 13% of degree of functionality values (Fn) of 1.0 for all the polyesterene samples reveal that TIPS group is present on each polyesterene chains.",

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T1 - Synthesis of monodisperse α-hydroxypoly(styrene) in hydrocarbon media using a functional organolithium

AU - Meuler, Adam J.

AU - Mahanthappa, Mahesh K.

AU - Hillmyer, Marc A.

AU - Bates, Frank S.

PY - 2007/2/6

Y1 - 2007/2/6

N2 - Synthesis of 3-triisopropylsilyloxy-1-propyllithium (TIPSOPrLi) and the characterization of its activity in anionic styrene polymerizations at 40 °C in cyclohexane was reported. The TIPSOPrLi initiator was used to prepare α-hydroxypoly(styrene) in cyclohexane with narrower polydispersity. The results show that the polydispersity index for TIPSO-PS is higher than the measured polydispersity indices for the TIPSO-PS samples with M n≥6.8kg/mol. The narrower molecular weight distribution of the TIPSO-PS is due to an increase in the rate of styrene initiation an the enhanced initiation state is due to a reduction in intermolecular association. 13% of degree of functionality values (Fn) of 1.0 for all the polyesterene samples reveal that TIPS group is present on each polyesterene chains.

AB - Synthesis of 3-triisopropylsilyloxy-1-propyllithium (TIPSOPrLi) and the characterization of its activity in anionic styrene polymerizations at 40 °C in cyclohexane was reported. The TIPSOPrLi initiator was used to prepare α-hydroxypoly(styrene) in cyclohexane with narrower polydispersity. The results show that the polydispersity index for TIPSO-PS is higher than the measured polydispersity indices for the TIPSO-PS samples with M n≥6.8kg/mol. The narrower molecular weight distribution of the TIPSO-PS is due to an increase in the rate of styrene initiation an the enhanced initiation state is due to a reduction in intermolecular association. 13% of degree of functionality values (Fn) of 1.0 for all the polyesterene samples reveal that TIPS group is present on each polyesterene chains.

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Synthesis of monodisperse α-hydroxypoly(styrene) in hydrocarbon media using a functional organolithium

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