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Study on Weather Aging of Nitrile Rubber 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.201300231
Subject(s) - ionic liquid , imide , nitrile , materials science , nitrile rubber , ultimate tensile strength , natural rubber , composite material , composite number , dynamic mechanical analysis , chemical engineering , polymer chemistry , polymer , chemistry , organic chemistry , catalysis , engineering
Summary Weather aging of nitrile rubber composites containing hydrophilic 1‐ethyl‐3‐methylimidazolium thiocyanate (EMIM SCN) and hydrophobic 1‐ethyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (EMIM TFSI), and 1‐allyl‐3‐methylimidazolium bis(trifluoromethylsulfonyl)imide (AMIM TFSI) ionic liquids was investigated. The mechanical properties at small (dynamic mechanical analysis) and high deformation (tensile test), the hardness and the electrical properties were measured before and after the aging process. It was found that the presence of hydrophobic ionic liquids in the nitrile rubber enhanced the retention of their mechanical properties (tensile strength, stiffness) and slightly reduced surface defects (as determined by scanning electron microscopy), thereby retarding the aging of rubber composites. However, the presence of hydrophilic EMIM SCN in the composite accelerated the degradation of the studied materials because of its high crosslinking activity during the aging process. The electrical studies showed also lower stability of hydrophilic ionic liquid (EMIM SCN) in the studied nitrile matrix (leaking effects) compared to the hydrophobic one (EMIM TFSI, AMIM TFSI).