MOLAR-MASS DISTRIBUTION OF POLYBUTADIENE SYNTHESIZED WITH NICKEL-BASED ZIEGLER-NATTA CATALYSTS .2.

Autor(en): SCHRODER, K
SCHMITZ, G
LECHNER, MD
GEHRKE, K
Stichwörter: BUTADIENE POLYMERIZATION; Polymer Science
Erscheinungsdatum: 1994
Herausgeber: HUTHIG & WEPF VERLAG
Journal: ANGEWANDTE MAKROMOLEKULARE CHEMIE
Volumen: 218
Startseite: 163
Seitenende: 170
Zusammenfassung: 
Cis-1,4-polybutadiene was produced by polymerization of 1,3-butadiene using a catalyst system containing Ni(OOC8H15)2 and Al(C2H5)3 and the Lewis acids BF3 . O(C2H5)2 or TiCl4. The molar mass distributions (MMD) of the polybutadienes are investigated by means of size exclusion chromatography (SEC). The MMD's were fitted by a sum of Schulz-Flory-Functions (SFF). Taking into account that one kind of active species gives one SFF defined by molar mass averages, one comparable active species in both systems and one different were found. This way it was tried to find a relationship between the grow up of the active species depending on components and reaction conditions.
ISSN: 00033146
DOI: 10.1002/apmc.1994.052180112

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