TY - GEN
T1 - Room temperature ionic liquids (RTILS) as novel latent curing agents and additives for epoxy resins
AU - Rahmathullah, Aflal M.
AU - Merrit, Brian
AU - Jeyarajasingam, Amutha
AU - Vanlandingham, Mark
AU - Palmese, Giuseppe R.
PY - 2007
Y1 - 2007
N2 - Recent work in our lab has led to the discovery that certain room temperature ionic liquids (RTILs) can be utilized to initiate cure or act as additives to manage mechanical properties in conventional thermosetting epoxy resins such as EPON®828. This paper shows that small amounts (up to 20 wt%) of a RTIL such as (1-ethyl-3-methyl imidazolium dicyanamide) exhibits good resin miscibility, long pot life and high thermal stability while being able to initiate cure at elevated temperatures without the associated problems of dispersion and non-homogenous cure. Thermomechanical analyses shows that materials with glass transition temperatures (Tg) of ∼200°C (tan δ max) can be obtained while the Tg and cross-linking density are dependent on the concentration of the RTIL used. The results are confirmed by differential scanning calorimetry over a range of RTIL concentrations as well. Gravimetric analysis also indicates that the hydrophilicity of the cured networks is dependent on the concentration of RTIL used.
AB - Recent work in our lab has led to the discovery that certain room temperature ionic liquids (RTILs) can be utilized to initiate cure or act as additives to manage mechanical properties in conventional thermosetting epoxy resins such as EPON®828. This paper shows that small amounts (up to 20 wt%) of a RTIL such as (1-ethyl-3-methyl imidazolium dicyanamide) exhibits good resin miscibility, long pot life and high thermal stability while being able to initiate cure at elevated temperatures without the associated problems of dispersion and non-homogenous cure. Thermomechanical analyses shows that materials with glass transition temperatures (Tg) of ∼200°C (tan δ max) can be obtained while the Tg and cross-linking density are dependent on the concentration of the RTIL used. The results are confirmed by differential scanning calorimetry over a range of RTIL concentrations as well. Gravimetric analysis also indicates that the hydrophilicity of the cured networks is dependent on the concentration of RTIL used.
UR - https://www.scopus.com/pages/publications/34748831589
UR - https://www.scopus.com/pages/publications/34748831589#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:34748831589
SN - 1934551007
SN - 9781934551004
T3 - International SAMPE Symposium and Exhibition (Proceedings)
BT - SAMPE '07
T2 - SAMPE '07: M and P - From Coast to Coast and Around the World
Y2 - 3 June 2007 through 7 June 2007
ER -