Linear low density polyethylene (LLDPE)/clay nanocomposites. Part I: Structural characterization and quantifying clay dispersion by melt rheology

Efficient one-step melt-compounding of copolyetheramide/pristine clay nanocomposites using water-injection as intercalating/exfoliating aid

“…Measurements were run three times for repeatability, using new dry samples before each analysis. Storage moduli of the molten nanocomposites are sensitive to nanocomposites structural changes [47]; slopes at low frequency (where the response of the nanocomposites are rather dominated by the polymer/filler interactions) were therefore determined. The latter is considered as a semi-quantitative measure of the degree of exfoliation of the mineral filler [48].…”

Thermal, viscoelastic and mechanical behavior of polypropylene with synthetic boehmite alumina nanoparticles

“…In particular, considerable resources have been dedicated in the research of thermoplastic matrices modified with polar nanofillers (such as silicas, metal oxides, metal salts, layered silicates, etc…) in order to enhanced their thermal, mechanical and rheological performances [4][5][6][7][8]. On the other hand, these nanofillers are generally poorly dispersed in apolar thermoplastics (such as polyolefins), thus limiting their beneficial effects on the target thermo-mechanical properties.…”

Preparation and Characterization of Maleic Anhydride Grafted Poly(Hydroxybutirate-CO-Hydroxyvalerate) – PHBV-g-MA

“…The results showed better clay dispersion and more exfoliated structure for the nanocomposite produced with PE-g-MA as compatibilizer 13 . Passador et al, 16 studied the influence of two different compatibilizers agents and their combination (MA grafted high density polyethylene, HDPE-g-MA; MA grafted linear low density polyethylene, LLDPE-g-MA; and 50/50 wt% mixture of these compatibilizers) on the rheological, thermo-mechanical and morphological properties of HDPE/LLDPE/organoclay blend-based nanocomposites.…”

“…Some works in the literature have proposed the use of MA grafted to thermoplastics as polyethylene and polypropylene [8][9][10][11][12][13] to improve the interfacial adhesion between the matrix and some reinforcement agents, as oak wood flour 5 , bamboo pulp fiber 14 , kenaf fiber 4 , clay 6,13,15 , bio-flour-filled 8 and others. It was observed that the presence of the compatibilizer agent induces a stronger interfacial adhesion and improvement of the mechanical properties, compared to uncompatibilized composites 4,15 , besides improving the particle dispersion into polymer matrix 13 , and the thermal stability of composite 8 . For the bio-flour-filled polypropylene composites with MA functionalized polypropylene as compatibilizing agent, the authors observed improved mechanical and thermal stability and interfacial adhesion 8 .…”