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Influence of the Polymeric Matrix and Thermal Treatment on the Properties of Polyolefin‐Graphite Nanosheets Nanocomposites
Author(s) -
González Darío M.,
Quijada Raúl,
YazdaniPedram Mehrdad,
Benavente Rosario,
Galland Griselda B.,
Milani Marcéo A.
Publication year - 2016
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.201600277
Subject(s) - materials science , nanocomposite , thermogravimetric analysis , composite material , thermal stability , graphite , polyolefin , compression molding , chemical engineering , layer (electronics) , mold , engineering
Homo and copolymers of metallocenic poly(propylene) with 1‐hexene and 1‐octadecene are used to prepare nanocomposites via melt mixing by using graphite nanosheets (GNSs) as filler. Different amounts of GNSs are used in order to study the influence of the filler on the thermal, mechanical, and electrical properties of nanocomposites. Significant changes have been observed in the crystallization temperature ( T c ) of the nanocomposites. Thermogravimetric analysis shows improvement in thermal stability. Young's modulus and elongation at break of the nanocomposites are depended on the type of the matrix and the amount of GNSs. Materials with high flexibility are obtained in the cases of matrices based on copolymers even at high filler loading. Nanocomposites have become a semiconductor material reaching conductivity of 10 −4 S cm −1 . Two different thermal treatments have been applied in the preparation of the films by compression molding. X‐ray diffraction analysis shows the existence of polymorphism according to the thermal treatment applied.