Preparation and characterization of poly (lactic acid) (PLA)/polyamide 6 (PA6)/graphene nanoplatelet (GNP) blends bio-based nanocomposites

Abstract

Biodegradable PLA is commonly derived from renewable resources and benign to the environment. It is a brittle thermoplastic with high strength and modulus; thus a suitable candidate for replacing conventional petroleum-based plastic. However, due to its limitation, PLA needs to be blended with other polymers and fillers for properties modifications. The aim of this work was to prepare PLA/PA6/GNP nanocomposites and characterize on the mechanical, thermal, chemical and dispersion of nanofiller in binary blend systems. PLA/PA6/GNP nanocomposites were blended by using a Haake twin screw extruder via melt intercalation method. The ratio of the polymer matrix was fixed at 20:80 and the processing temperature was in the range of 205 °C to 260 °C. Graphene nanoplatelet fillers were Plasticized polylactide/clay nanocomposites. I. The role of filler content and its surface organo-modification on the physico-chemical properties

Poly(lactic acid)/Acrylonitrile Butadiene Styrene Nanocomposites with Hybrid Graphene Nanoplatelet/Organomontmorillonite: Effect of Processing Temperatures

“…Based on previous studies, the addition of nanofillers to the polymer matrix will produce an increase of the mechanical properties of the nanocomposites (Bijarimi et al, 2019;Pluta et al, 2006). From this experiment, it was observed a significant change from PLA/ABS without nanofillers to the nanofillers, as shown in Fig.…”

“…The characteristic peaks of PLA were at 1 746, 2 995, 2 946, and 1 080 cm -1 which are the frequencies of C=O, -CH 3 asymmetric, -CH 3 symmetric, and C-O functional groups respectively. As for ABS, the characteristic frequency was at 2 924 cm -1 for the asymmetric and symmetric CH 2 stretching, 2 237 cm -1 for the C:N stretch, as well as 966 cm -1 and 912 cm -1 for the out-of-plane C-H stretch of butadiene (Bijarimi et al, 2019;Chieng et al, 2014;Ma, et al 2012).…”

“…Montmorillonite (MMT) is a cost-effective additive in polymers and currently the most researched filler for polymer composites. The use of MMT and graphene individually as nanofiller in the polymer matrix has been well established and available in the literature (Alexandre et al, 2000;Arroyo et al, 2010;Bijarimi et al, 2019;2020;Coiai et al, 2017;Gonçalves et al, 2016;Jalalvandi et al, 2015;Keramati et al, 2016;Li et al, 2017;Manafi et al, 2014;Pinto et al, 2016;Sabzi et al, 2015;Scaffaro et al, 2016;Sharma et al, 2018;Young et al, 2018). Nevertheless, there is a limitation for polymer nanocomposites based on MMT alone, such as brittleness and thermal conductivity.…”

Extrusion of Polymer Nanocomposites with Graphene and Graphene Derivative Nanofillers: An Overview of Recent Developments

“…Polyamides (PA) are another commonly used base polymer for the processing of graphene containing nanocomposites [72][73][74][75][76][77]. PA6/PLA blends have been modified with variable GnP concentrations [72], achieving maximum thermal and mechanical resistance for the highest GnP ratio of 5 wt.%. Few layers graphene (FLG) has been added to PA6/Poly (butylene terephthalate)-block-poly (tetramethylene glycol) (PBT-PTMG) to obtain ternary nanocomposites [73], using both in situ polymerization and extrusion.…”

Nanocomposite of Graphene Oxide Encapsulated in Polymethylmethacrylate (PMMA): Pre-Modification, Synthesis, and Latex Stability

“…Therefore, GO has been modified by an amine, an alkyl lithium reagent, isocyanate, and di-isocyanate, amphiphilic polymers such as poly (sodium 4-styrene sulfonate), 7,7,8,8-tetracyanoquinodimethane, sulfonated polyaniline, and diazonium salt to be hydrophobic and amenable to different synthetic polymers. However, these methods including solution blending, bulk polymerization, and melt-intercalation [21][22][23] require the use of toxic organic solvents, high temperature, or produce the non-uniform distribution of the GO sheet in the polymer matrix.…”