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RESEARCH PRODUCT
Mechanism of anionic polymerization of methyl methacrylate in the presence of aluminium alkyls
Helmut SchlaadAxel H. E. Müllersubject
chemistry.chemical_classificationKetonePolymers and PlasticsChemistryOrganic ChemistryCondensed Matter PhysicsMethacrylateToluenechemistry.chemical_compoundAnionic addition polymerizationTriethylaluminiumPolymerizationPolymer chemistryMaterials ChemistryMethyl methacrylateTriisobutylaluminiumdescription
Methyl methacrylate was polymerized with tert-butyl lithium in the presence of triethylaluminium or triisobutylaluminium at 78°C in toluene. As indicated by GPC and MALDI-TOF mass spectrometry, the polymerization is accompanied by side reactions. The lower oligomers were fractionated by distillation and characterised by NMR, FT-IR, UV and electron impact (EI) mass spectrometry. All these data show that part of the polymer chains are carrying exactly one tert-butyl isoprenyl ketone unit. In order to avoid the formation of tert-butyl isoprenyl ketone a molar ratio of Al/Li>2 is necessary.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1995-06-01 | Macromolecular Symposia |