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Preparation and dielectric properties of poly(ε‐caprolactone) compounded with “bucky gels”‐like mixture
Author(s) -
Yoon Sang Won,
Ren Xianqian,
Chen GuangXin
Publication year - 2014
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.40231
Subject(s) - materials science , nanocomposite , crystallinity , caprolactone , dielectric , ionic liquid , raman spectroscopy , polycaprolactone , ternary operation , composite material , dispersion (optics) , chemical engineering , carbon nanotube , polymer , polymer chemistry , copolymer , organic chemistry , chemistry , engineering , catalysis , physics , optoelectronics , computer science , optics , programming language
Poly(ε‐caprolactone) (PCL) was melt compounded with “Bucky gels”‐like mixture that prepared by grinding multiwalled carbon nanotubes (MWNTs) and ionic liquids (ILs). Raman spectrum showed the significant interaction between ILs and MWNTs. The dielectric behavior of PCL nanocomposites based on unmodified and IL‐modified MWNTs was studied from 40 Hz to 30 MHz. The addition of ILs significantly enhanced the dielectric property of PCL/IL/MWNT ternary nanocomposites, which was much higher than that of the sum of PCL/IL with PCL/MWNT binary nanocomposites. The dielectric properties of PCL/IL/MWNT nanocomposites were mainly influenced by ILs in low frequency and were dominated by MWNTs in high frequency. SEM results revealed that a more uniform and fine dispersion of MWNTs were achieved throughout the PCL matrix because of ILs. The addition of ILs in nanocomposites changed the crystallinity of PCL. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 40231.