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Fabrication and characterization of the orientated MMT/PI composite films via relatively low magnetic field
Author(s) -
Lv Fengzhu,
Xu Linan,
Xu Zixian,
Fu Liling,
Zhang Yihe
Publication year - 2015
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.41224
Subject(s) - materials science , composite number , polyimide , composite material , polymerization , montmorillonite , exfoliation joint , in situ polymerization , nanocomposite , anisotropy , polymer , polymer chemistry , graphene , nanotechnology , layer (electronics) , optics , physics
Anisotropic cetylpyridinium modified magnetic montmorillonite/polyimide (CPC‐Fe 3 O 4 ‐MMT/PI) composite films were prepared based on CPC‐Fe 3 O 4 ‐MMT capable of exfoliation and magnetic‐field response via in situ polymerization and relatively low magnetic field adjustment (0.6 T) in the film casting followed by imidization. The stability of CPC‐Fe 3 O 4 ‐MMT during the in situ polymerization over flow shearing of the polymers and longtime stirring was evaluated by comparison the composition of CPC‐Fe 3 O 4 ‐MMT before and after polymerization via TG analysis and element analysis. Besides, the structural anisotropy of the produced CPC‐Fe 3 O 4 ‐MMT/PI composite films deriving from orientation of plate‐like CPC‐Fe 3 O 4 ‐MMT was confirmed by 1‐D and 2‐D XRD and SEM. The CPC‐Fe 3 O 4 ‐MMT/PI composite films with structural anisotropy exhibit gas permeation, optical and magnetic anisotropic properties which would widen the application fields of the composite films. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 41224.