Copolymers from norbornene and norbornadiene with organized morphologies and high: T g values obtained via ROMP with a highly reactive [RuCl3(PCy3)2] complex

C. P. Ferraz, L. R. Fonseca, V. Tomazetti, F. C.S. Silva, B. S. Lima-Neto, V. P. Carvalho

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The [RuCl3(PCy3)2] complex presented high reactivity toward ring opening metathesis polymerization (ROMP) of norbornadiene (NBD) in a non-degassed solution upon addition of ethyl diazoacetate (EDA). Quantitative yields of polyNBD were obtained instantaneously at 25 °C. ROMP of norbornene (NBE) occurred better at 50 °C for 60 min, with 95% of isolated polyNBE. Copolymers with different porous structures were obtained from ROMP of NBE in the presence of NBD with different starting [NBE]/[NBD] molar ratios at 25 °C. SEM micrographs showed a more organized porous structure as the NBD loading decreased. A well-defined honeycomb-like pattern was recorded for the copolymer from the run with an NBE:NBD molar ratio load of 5000:500. The Tg values varied from 37 °C in polyNBE to 90 °C in poly[NBE-co-NBD] as the NBD loading increased.

Original languageEnglish (US)
Pages (from-to)9424-9431
Number of pages8
JournalNew Journal of Chemistry
Volume40
Issue number11
DOIs
StatePublished - Jan 1 2016

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