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Can I read Sodium Hydride/Trialkylaluminum Complexes for the Controlled Anionic Polymerization of Styrene at High Temperature on EtoBox?
Sodium Hydride/Trialkylaluminum Complexes for the Controlled Anionic Polymerization of Styrene at High Temperature by Stéphane Carlotti; Stephane Menoret; Philippe Desbois; Norbert Nissner; Volker Warzelhan; Alain Deffieux is a Materials Science article available to read on EtoBox.
What is Sodium Hydride/Trialkylaluminum Complexes for the Controlled Anionic Polymerization of Styrene at High Temperature about?
## Abstract **Summary:** A new generation of anionic initiators (butyllithium free), based on trialkylaluminum and a readily available alkali metal hydride, has been developed for the control of styrene polymerization at high temperature. Triisobutylaluminum and sodium hydride form heterocomplexes that are efficient for the initiation of styrene polymerization at 100 °C in toluene or in bulk. To be active under such conditions, these systems require the presence of an excess of metal hydride with respect to AlR~3~ ([Al]/[Na] < 1). PS chains are specifically initiated by the hydrides coming from NaH, and molar masses are controlled in the range 0.8 < [Al]/[Na] < 1. Fast exchange between dormant 1:1 and active 1:2 complexes (Al:Na), and ligand rearrangements within the 1:2 complex, can explain the observed results. Initiation of styrene with __i__‐Bu~3~Al/NaH systems. magnified imageInitiation of styrene with __i__‐Bu~3~Al/NaH systems.
Who reads Sodium Hydride/Trialkylaluminum Complexes for the Controlled Anionic Polymerization of Styrene at High Temperature?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Stéphane Carlotti; Stephane Menoret; Philippe Desbois; Norbert Nissner; Volker Warzelhan; Alain Deffieux
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Ltd.; Wiley (ISSN 1022-1336)
- Published
- 2006
- Language
- EN
- Field
- Materials Science (Physical Sciences)