Título
Synthesis and characterization of high cis-polymyrcene using neodymium-based catalysts
Autor
Ramón Díaz de León
Francisco Javier Enríquez-Medrano
Hortensia Maldonado Textle
Ricardo Mendoza Carrizales
YADIRA KARINA REYES ACOSTA
Héctor López
Jose Luis Olivares-Romero
LUIS EDMUNDO LUGO URIBE
Nivel de Acceso
Acceso Abierto
Referencia de publicación
URL/http://onlinelibrary.wiley.com/doi/10.1002/cjce.22458/abstract
doi: 10.1002/cjce.22458
ISSN/1939-019X
Materias
β-myrcene - (PALABRA CLAVE DEL AUTOR) Coordination polymerization - (PALABRA CLAVE DEL AUTOR) Neodymium-based catalyst - (PALABRA CLAVE DEL AUTOR) High cis-1,4 polymyrcene - (PALABRA CLAVE DEL AUTOR) INGENIERÍA Y TECNOLOGÍA - (CTI) CIENCIAS TECNOLÓGICAS - (CTI) INGENIERÍA Y TECNOLOGÍA QUÍMICAS - (CTI) PROCESOS QUÍMICOS - (CTI)
Resumen o descripción
The monomer β-myrcene, a renewable resource, was polymerized in cyclohexane using two different Ziegler-Natta catalyst systems based on neodymium Nd(Oi-Pr)3 and NdV3. The Nd(Oi-Pr)3 was combined with [HNMe2Ph][B(C6F5)4] (or [CPh3][B(C6F5)4]) and Al(i-Bu)3 (or Al(i-Bu)2H). Next, the NdV3 was activated using Al(i-Bu)3 and AlEt2Cl. Both catalyst systems exhibited high polymer yields near 100 % in the established reaction time, high polymer molecular masses, and broad molecular mass distributions. The catalyst systems gave an effective and stereospecific polymerization reaction of β-myrcene providing high cis selectivity of 1,4-polymyrcenes (> 92 %) with a glass transition temperature between −66 and −62 °C. The above-mentioned features of resulting elastomers in conjunction with the polymer's molecular masses and molecular mass distributions proved to be sensitive to borane and alkylaluminum compounds molar ratios, [B]/[Nd] and [Al]/[Nd] using Nd(Oi-Pr)3 and [Cl]/[Nd] and [Al]/[Nd] with NdV3.
The authors thank José Díaz Elizondo, Jesús Cepeda, Uriel Peña, Judith Cabello, and Guadalupe Tellez for their technical support.
Editor
John Wiley
&
Sons, Inc.
Fecha de publicación
2016
Tipo de publicación
Artículo
Versión de la publicación
Versión enviada
Recurso de información
Formato
application/pdf
Fuente
Canadian Journal of Chemical Engineering, Vol. 94, no. 5 (may), pag. 823-832
Idioma
Inglés
Audiencia
Público en general
Sugerencia de citación
Díaz de León Gómez, R. E., Enríquez-Medrano, F. J., Maldonado Textle, H., Mendoza Carrizales, R., Reyes Acosta, K., López González, H. R., Olivares Romero, J. L. and Lugo Uribe, L. E. (2016), Synthesis and characterization of high cis-polymyrcene using neodymium-based catalysts. Can. J. Chem. Eng., 94: 823–832. doi:10.1002/cjce.22458
Repositorio Orígen
CIATEQ Digital
Descargas
1822