Cationic Copolymerization of Styrene Oxide with Propylene Oxide

Blanchard, L. P.; Aghadjan, A.; Malhotra, S. L.

doi:10.1080/00222337508068664

Cited by 3 publications

(2 citation statements)

References 17 publications

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“…Therefore, the first weight lost in the LBP can be attributed to the polyether chain grafted to the OL core and the second one to the decomposition of the core OL. It seems clear that the thermal degradation pattern of the obtained LBPs at different molar ratios is very similar and it could be concluded that within the LBP composition range obtained the amount of added oxirane has no significant impact on the final LBPs thermal degradation; these results being consistent with those obtained in the copolymerization of styrene oxide with propylene oxide using diols as initiators [25].…”

supporting

confidence: 82%

Lignin-Based Polyols with Controlled Microstructure by Cationic Ring Opening Polymerization

Perez-Arce¹,

Centeno-Pedrazo²,

Labidi

et al. 2021

Polymers

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Lignin-based polyols (LBPs) with controlled microstructure were obtained by cationic ring opening polymerization (CROP) of oxiranes in an organosolv lignin (OL) tetrahydrofuran (THF) solution. The control on the microstructure and consequently on the properties of the LBPs such as hydroxyl number, average molecular weight, melting, crystallization and decomposition temperatures, are crucial to determine the performance and application of the derived-products. The influence of key parameters, for example, molar ratio between the oxirane and the hydroxyl groups content in OLO, initial OL concentration in THF, temperature, specific flow rate and oxirane nature has been investigated. LBPs with hydroxyl numbers from 35 to 217 mg KOH/g, apparent average Mw between 5517 and 52,900 g/mol and melting temperatures from −8.4 to 18.4 °C were obtained. The CROP procedure allows obtaining of tailor-made LBPs for specific applications in a very simple way, opening the way to introduce LBPs as a solid alternative to substitute currently used fossil-based polyols.

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supporting

confidence: 82%

Lignin-Based Polyols with Controlled Microstructure by Cationic Ring Opening Polymerization

Perez-Arce¹,

Centeno-Pedrazo²,

Labidi

et al. 2021

Polymers

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show abstract

“…For the system CO and ECH these same authors [ll] found reactivity ratios were r,(CO) = 1.89 and r,(ECH) = 0.15. Blanchard et al [12] copolymerized styrene oxide with propylene oxide in ethylene oxide by using BF, etherate as catalyst and 1,3-propandioI as cocatalyst.…”

Section: In T Rod U Ct I0 Nmentioning

confidence: 99%

Cationic Copolymerization of Epichlorohydrin with Styrene Oxide and with Cyclohexene Oxide

Pasika

Chen

1991

Journal of Macromolecular Science: Part A - Chemistry

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Cationic Copolymerization of Propylene Oxide with Tetrahydrofuran. X. Variation of Reactivity Ratios with Different Reaction Parameters

Malhotra¹,

Blanchard²

1975

Journal of Macromolecular Science: Part A - Chemistry

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Cationic Copolymerization of Styrene Oxide with Propylene Oxide

Cited by 3 publications

References 17 publications

Lignin-Based Polyols with Controlled Microstructure by Cationic Ring Opening Polymerization

Lignin-Based Polyols with Controlled Microstructure by Cationic Ring Opening Polymerization

Cationic Copolymerization of Epichlorohydrin with Styrene Oxide and with Cyclohexene Oxide

Cationic Copolymerization of Propylene Oxide with Tetrahydrofuran. X. Variation of Reactivity Ratios with Different Reaction Parameters

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