Abstract
Polymer/clay nanocomposites are a new class of composites with polymer matrices where the disperse phase is a silicate with elementary particles that have at least one of dimensions in nanometer order. Polyamide 6/Brazilian organoclay nanocomposites were prepared by melt intercalation, and the mechanical, thermal and thermomechanical properties were studied. The structure and morphology of the nanocomposites were evaluated by X-ray diffraction (XRD) and transmission electron microscopy (TEM). It was verified by XRD and TEM analysis that all systems presented exfoliated structure predominantly. By thermogravimetry (TG), nanocomposites showed higher stabilities in relation to pure polymer. It was observed that the nanocomposites showed better mechanical properties compared to the properties of polyamide 6. The heat deflection temperature (HDT) values of the nanocomposites showed a significant increase in relation to pure polymer.
Highlights
Polymer nanocomposites with clay are a new class of applications[16,17]
The mineral particles commonly used in these materials organoclay is one of the most important factors in achieving are the smectite clays in its particles lamellar morphology, with sides on enhanced by optimizing the structure of the organoclay for the order of a micrometer and a thickness of approximately a given polymer matrix
From until the present day, much attention has been given to polymer nanocomposites, especially those developed with layered silicates, due to the great need of modern materials of engineering and the fact that the pure polymers do not Polyamide 6 (PA6) is one of the most used types of aliphatic polyamide
Summary
Polymer nanocomposites with clay are a new class of applications[16,17]. The key to significant enhancement in composites where the polymer matrix phase is dispersed properties is to exfoliate the individual organoclay platelets silicate consisting of elementary particles which have at into the polymer matrix to utilize their high aspect ratio least one of its dimensions in the order of nanometers. and modulus[18]. The mineral particles commonly used in these materials organoclay is one of the most important factors in achieving are the smectite clays (montmorillonite, hectorite and good exfoliation; to a certain extent the affinity can be saponite) in its particles lamellar morphology, with sides on enhanced by optimizing the structure of the organoclay for the order of a micrometer and a thickness of approximately a given polymer matrix. From until the present day, much attention has been given to polymer nanocomposites, especially those developed with layered silicates, due to the great need of modern materials of engineering and the fact that the pure polymers do not Polyamide 6 (PA6) is one of the most used types of aliphatic polyamide. PA6 crystallizes fast, usually up to percentages in the range present the behavior or the properties required for certain of 30-40%, providing a high modulus to the material even application[3,4,5,6,7,8,9,10,11,12,13,14,15]
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