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Antistatic effects and mechanism of ionic liquids for methyl vinyl silicone rubber
Author(s) -
Ye Xiwang,
Guo Jianhua,
Zeng Xingrong
Publication year - 2017
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.45180
Subject(s) - antistatic agent , materials science , silicone rubber , composite material , contact angle , ionic liquid , natural rubber , fourier transform infrared spectroscopy , polymer chemistry , chemical engineering , chemistry , organic chemistry , layer (electronics) , engineering , catalysis
The effect of two ionic liquids (ILs), namely, 1‐allyl‐3‐methyl imidazolium chloride ([AMIM]Cl) and 1‐ethyl‐3‐methyl imidazolium tetrafluoroborate ([EMIM]BF 4 ), on the surface and volume resistivities, mechanical properties, transparency, and water contact angle of methyl vinyl silicone rubber (MVQ) were investigated. The chemical structures of the two ILs before and after heat treatment were characterized by Fourier transform infrared spectroscopy. The morphology and fluorine and chlorine elemental dispersion were characterized by field emission scanning electron microscopy and energy‐dispersive X‐ray spectroscopy mapping, respectively. The antistatic mechanism was revealed. The results show that the MVQ–[EMIM]BF 4 composites had lower surface and volume resistivities than the MVQ–[AMIM]Cl composites. The mechanical properties of the MVQ–[EMIM]BF 4 and MVQ–[AMIM]Cl composites were slightly lower than those of the pristine MVQ. With increasing [EMIM]BF 4 content, the surface and volume resistivities and water contact angle of the MVQ–[EMIM]BF 4 composites decreased. When the content of [EMIM]BF 4 was 2.0 phr, the MVQ–[EMIM]BF 4 composites showed better antistatic performance with lower surface and volume resistivities of 9.6 × 10 9 Ω and 1.2 × 10 11 Ω cm, respectively. The antistatic mechanism of the MVQ–IL composites was ascribed to the synergistic effect of ionic migration and moisture absorption. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134 , 45180.