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Properties and Dispersion of EPDM/Modified‐Organoclay Nanocomposites
Author(s) -
Kang Donghee,
Kim Dongsik,
Yoon SungHwan,
Kim Dongkyu,
Barry Carol,
Mead Joey
Publication year - 2007
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200600355
Subject(s) - organoclay , materials science , maleic anhydride , composite material , thermal stability , polybutadiene , nanocomposite , compatibilization , dispersion (optics) , polymer , polymer blend , copolymer , chemical engineering , physics , optics , engineering
Elastomers show improved properties when reinforced with nanoclay at low filler loadings, but dispersion of the clay is difficult in non‐polar polymers, such as ethylene propylene diene monomer (EPDM). In this work several compatibilization approaches were studied, including the addition of EPDM modified with maleic anhydride (EPDM‐ g ‐MA) and the use of organoclay modified with maleic anhydride‐grafted liquid vinyl polybutadiene (LVPB‐ g ‐MA). The use of LVPB‐ g ‐MA‐modified organoclay increased the degree of dispersion as measured by X‐ray diffraction, giving increased thermal stability and modulus, and decreased swelling. Flame resistance was poorer for the EPDM/LVPB‐ g ‐MA‐modified organoclay system compared to the unmodified EPDM/organoclay compound. The resistivity of the nanoclay‐filled composites was lower than the reference EPDM compound, but dielectric properties for the LVPB‐ g ‐MA modified organoclay were similar to the reference.