Thermal properties of nanocomposites based on polyethylene and n-heptaquinolinum modified montmorillonite

Abstract

The aim of the research was obtaining and application of smectic clay modifying agent. The organophilic clay is used as nanofiller in polymer nanocomposites [1]. A microwave-assisted reaction led to obtaining N-heptaquinolinum, which is amphiphilic compound, containing both hydrophobic (alkyl and aromatic) and hydrophilic sections in its structure [2]. N-heptaquinolinum was used as a montmorillonite clay modifying agent. Modification was carried out in formulated way [3,4]. Modification efficiency was determined by X-ray diffraction (XRD) analysis and elementary analysis. Organophilic clay (Ch7) was introduced, using the extrusion method, into polyethylene matrix in different mass relations (1.5, 3 and 5 %) [3]. The structure of obtained materials was studied by means of XRD and SEM. To evaluate potential applications thermal properties of received nanocomposites were tested with thermogravimetric analysis and differential scanning calorimetry. The thermal stability of PE/clay composites can be improved in the case of loading 1.5 and 5 mass%.

Structure and antibacterial properties of polyethylene/organo-vermiculite composites

“…The content of intercalated HDTMA þ at these two samples was too low to enable interaction between the fillers and the PE. Thus, these two samples can be considered as the traditional microcomposites [20,51].…”

Effect of the organically modified vermiculite clay loading on the rheological and flammability properties of biopolyethylene/vermiculite clay biocomposites

“…To obtain polyethylene/clay composites, different types of clay have been used and the most common is the montmorillonite (MMT). 6–12 Since clays are inorganic and the polyethylene matrix is organic (nonpolar), its surfaces have to be modified with a surfactant in order to become organophilic. In the literature, one of the clay types that has been used (though less used than MMT) to prepare polyethylene matrix composites is vermiculite (natural—VMT or organically modified—OVMT).…”