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Properties of Carboxylated Nitrile Rubber/Hydrotalcite Composites Containing Imidazolium Ionic Liquids
Author(s) -
Marzec Anna,
Laskowska Anna,
Boiteux Gisele,
Zaborski Marian,
Gain Olivier,
Serghei Anatoli
Publication year - 2014
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201300149
Subject(s) - ionic liquid , nitrile rubber , nitrile , hydrotalcite , natural rubber , imide , materials science , ionic conductivity , polymer chemistry , glass transition , ionic bonding , composite material , chemistry , organic chemistry , ion , polymer , electrolyte , catalysis , electrode
Summary In the present study, two types imidazolium salts containing the common cation 1‐butyl‐3‐methylimidazolium‐hydrophilic tetrachloroaluminate (BMIM AlCl 4 ) and hydrophobic bis(trifluoromethylsulfonyl)imide (BMIM TFSI) are analyzed for effects on the ionic conductivity and the state of cure of carboxylated nitrile rubber/hydrotalcite composites (XNBR/HT). Imidazolium salt containing tetrachloroaluminate ions effectively participates in the crosslinking process of carboxylated nitrile rubber and contributes to an increase in the crosslink density of the composites. Hydrophobic 1‐butyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide was found to be compatible with carboxylated nitrile rubber. In the presence of 15 parts per hundred rubber (phr) of BMIM TFSI, the ionic conductivity of the composites increases from 10 −10 to 10 −7 S·cm −1 , and the glass transition temperature (T g ) of the XNBR shifts towards lower temperatures from ‐23 °C to ‐33 °C.