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Maleated amorphous ethylene propylene compatibilized polyethylene nanocomposites: Room temperature nonlinear creep response
Author(s) -
Shaito Ali,
Fairbrother Debora,
Sterling Jerry,
D'Souza Nandika Anne
Publication year - 2010
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21589
Subject(s) - materials science , polyethylene , creep , nanocomposite , composite material , montmorillonite , maleic anhydride , ultimate tensile strength , amorphous solid , dispersion (optics) , copolymer , polymer , organic chemistry , chemistry , physics , optics
Nonlinear creep of polyethylene and its nanocomposites remains an area of significant interest. Maleated polyethylene is often used as a compatibilizer to ensure enhanced dispersion. This article investigates blown films of linear low‐density polyethylene and its nanocomposites with montmorillonite‐layered silicate (MLS). An amorphous ethylene propylene copolymer grafted maleic anhydride (amEP) was added to enhance the interaction between the PE and the MLS. Tensile results indicate that the addition of amEP and MLS separately and together produces a synergistic effect on the mechanical properties of the neat PE. Nonlinear creep was analyzed by examining creep and recovery of the films with a Burger model and the Kohlrausch‐Williams‐Watts relation. A consistent decrease in unrecoverable plastic strain was obtained in the nanocomposite samples. A decreased retardation time associated with MLS presence was determined. POLYM. ENG. SCI., 50:1620–1632, 2010. © 2010 Society of Plastics Engineers