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Silicate layer exfoliation in polyolefin/clay nanocomposites based on maleic anhydride modified polyolefins and organophilic clay
Author(s) -
Hasegawa Naoki,
Usuki Arimitsu
Publication year - 2004
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.20459
Subject(s) - polyolefin , materials science , silicate , exfoliation joint , maleic anhydride , polypropylene , intercalation (chemistry) , nanocomposite , scanning electron microscope , composite material , chemical engineering , polymer chemistry , polymer , layer (electronics) , copolymer , organic chemistry , chemistry , graphene , engineering , nanotechnology
Silicate layer exfoliation processes in maleic anhydride (MA) modified polyolefins were studied by using X‐ray diffraction measurements, scanning electron microscopy, and transmission electron microscopy observations. Modified polyolefins grafted with 0.09–4.5 wt % MA groups intercalate into the organophilic clay galleries modified with stearyl ammonium ions. Molten MA‐modified polypropylene continuously intercalates into the galleries and the silicate layers exfoliate spontaneously without shear. However, the silicate layers maintain arranging parallel together, although the interlayer spacing expands over 10 nm. By adding shear, the silicate layers homogeneously disperse into MA‐modified polypropylene matrix. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 93: 464–470, 2004