Effect of the montmorillonite intercalant and anhydride maleic grafting on polylactic acid structure and properties

Synergy between fillers in organomontmorillonite/graphene–PLA nanocomposites

“…This is commonly associated with the formation of a network structure (exfoliation) of clay layers. Similar results have already been published by Issaadi et al (2015). They concluded, using rheological tests, that Cloisite® 20A (non-polar as Cloisite® 15A) is better dispersed than Cloisite® 30B in PLA matrix compatibilized with maleated-PLA (PLAgMA) as a consequence to the peeling-of phenomenon.…”

“…From the experimental conditions, the water vapor ΔP is 1400.3 Pa calculated for a temperature of 23°C and a relative humidity of 48% (Issaadi et al, 2015). Three measurements were realized for each material and the average values were taken as the results.…”

“…3, the evolution of the reinforcing factor as function of frequency for different nanocomposites is represented. In this study, the reinforcing factor is defined as the ratio between the storage modulus (G′) of the composite and that of its matrix measured using a rheometer (Issaadi et al, 2015).…”

“…To improve PLA's properties and overcome its shortcomings such us poor thermal stability and processability, several studies have been performed using some fillers such as clay minerals, carbon nanotubes and graphene to obtain nanocomposite materials (Keshtkar et al, 2014;Mai et al, 2013;Narimissa et al, 2014;Wang et al, 2012). Polymer nanocomposites exhibit markedly improved properties when compared to the pure polymers or their traditional composites (Miao and Hamad, 2013;Luddee et al, 2014;Issaadi et al, 2015;Zhang et al, 2015).…”

Effect of an Organo-Modified Montmorillonite on the Barrier Properties of PET Nanocomposites Using a Polyester Ionomer as a Compatibilizing Agent

“…These nanocomposites show improved mechanical and barrier properties compared to the corresponding neat polymer matrix and conventional composites due to the nano-scale reinforcement and the tortuous diffusion path caused by the high aspect ratio of aluminosilicate layers [1][2][3][4][5] . In order to maximize these benefits it is necessary to achieve a high level of organoclay exfoliation, uniform distribution and appropriate orientation of clay platelets [6][7][8][9] . Among various processes, the following two are considered as being commercially attractive for preparing layered silicate based polymer nanocomposites: in situ polymerization and melt compounding 10,11 .…”