Open AccessThe Influence of co-catalyst in the Polymerization of 1,3-butadiene Catalyzed by Neodymium Chloride Tripentanolate
Author(s) -
Luis Alexandro Valencia López,
Francisco Javier EnríquezMedrano,
Hortensia Maldonado Textle,
Florentino SorianoCorral,
Ricardo López-González,
Claude St Thomas,
Francisco Hernández Gámez,
José Luis OlivaresRomero,
Ramón Díaz de León
Publication year - 2017
Publication title -
journal of the mexican chemical society
Language(s) - English
Resource type - Journals
ISSN - 2594-0317
DOI - 10.29356/jmcs.v60i3.96
Subject(s) - methylaluminoxane , catalysis , polymerization , chemistry , chloride , neodymium , 1,3 butadiene , polymer chemistry , hydride , polymer , metallocene , organic chemistry , metal , laser , physics , optics
Triisobutylaluminum (TIBA), triethylaluminum (TEA), di-isobutylaluminum hydride (DIBAH) and methylaluminoxane (MAO) were evaluated as activators of neodymium chloride tripentanolate catalyst in order to investigate their influence over the catalytic activi-ty, macro- and microstructure, and thermal properties of of resulting polybutadienes. The higher catalytic activities were achieved by TEA and TIBA as co-catalysts, whereas TIBA and DIBAH led to the poly-mers with highest cis-1,4 structure content with 98.4 and 97.3% re-spectively. The catalytic activity was remarkably poor with MAO as co-catalyst, as well as low stereocontrol. Number average molecular weight values were observed in the range of 260 to 720 kg/mol.
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