Furfurylamine ffa

A maleated EPM (EPM-g-MA, Keltan DE5005, 49 wt % ethylene, 2.1 wt % MA, M_n = 50 kg/mol, polydispersity index = 2.0) were kindly provided by ARLANXEO Performance Elastomers. Furfurylamine (FFA, Sigma-Aldrich, St. Louis, MO, USA, ≥99%) was freshly distillated. Multi-walled carbon nanotubes (CNT, Sigma-Aldrich, diameter × L 6–9 nm × 5 µm, >95% (carbon)) were used as additive and cross-linking agent. 1,1′-methylenedi-4,1-phenylene)bismaleimide (BM, Sigma-Aldrich, ≥97%) and dicumyl peroxide (DCP, Sigma-Aldrich, 98%) were used as reversible and irreversible cross-linking agents, respectively. 3-azido-1-propanamine (90%), octadecyl-1-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate (anti-oxidant, 99%), 1-methyl-2-pyrrolidinone (NMP, 99.5%), tetrahydrofuran (THF, >99.9%), decahydro naphthalene (decalin, mixture of cis + trans, >98%) and acetone (>99.5%) were all bought from Sigma-Aldrich and used as received.

The non-modified ethylene/vinyl acetate (VA) copolymer rubber (EVA rubber, Levamelt 700, 30 wt % ethylene, M_n = 35 kg/mol, polydispersity index (PDI) = 9) and the maleated EVA copolymer rubber (EVA-g-MA, 29 wt % ethylene, 69 wt % VA, 1.41 wt % MA, M_n = 31 kg/mol, PDI = 17) were kindly provided by ARLANXEO, Dormagen, Germany. The ethylene/VA/furfuryl methacrylate (FM) terpolymer (EVFM, 38 wt % ethylene, 60 wt % VA, 2.1 wt % FM, M_n = 46 kg/mol, PDI = 2.7) was synthesized from ethylene, VA, and FM in t-butanol as solvent and using 2,2-azobis 2,4-dimethyl valeronitrile (ADVN) as initiator. The EVA-g-MA precursor was dried under vacuum at 175 °C for 1 h to convert any diacid present into cyclic anhydride [28 (link),45 (link)]. Carbon black N550 was kindly provided by Teijin Aramid. Octadecyl-1-(3,5-di-tert-butyl-4-hydroxy phenyl) propionate (99%), 1,1-(methylenedi-4,1-phenylene)bismaleimide (BM, 95%), dicumyl peroxide (DCP, 98%), dioctyl sebacate (DOS, ≥97%), tetrahydrofuran (THF, >99.9%), toluene (99.8%), and acetone (>99.5%) were all purchased from Sigma-Aldrich (Zwijndrecht, The Netherlands) and used as received as reversible cross-linker, phenolic anti-oxidant, peroxide cross-linker, lubricant, and solvents, respectively. Furfurylamine (FFA, Sigma-Aldrich, ≥99%) was freshly distillated before use.