Thermal, water absorption, and mechanical characterizations of polylactide based nanocomposites: Comparison between sodium and modified montmorillonite as reinforcement materials

Abstract

The research on the polymer silicate layer nanocomposites is currently focusing on maximizing the polymer-filler interface interaction. This study aimed to elucidate the effect of two different types of montmorillonite (MMT), which were Cloisite sodium (CNa) and Cloisite 10A (C10A), on the thermal, water absorption, and mechanical performances of polylactide (PLA) nanocomposites.Nanocomposites with different clay loadings from 1 to 7 wt% were fabricated by melt intercalation in a twin-screw extruder. XRD analysis showed an intercalated structure for PLA/C10A at 1 and 3 wt% loadings. From TGA analysis, the initial thermal degradation temperature for PLA/C10A at 1 and 3 wt% showed promising enhancement in thermal stability. DSC results also confirmed that both nanocomposites at clay loadings less than 5 wt% improved thermal properties and crystallinity compared to neat PLA. Storage modulus and tan δ for PLA/C10A shifted towards higher temperature. Water absorption intakes of PLA/C10A at 1 and 3 wt% loadings were reduced by 42% and 39%, respectively. For PLA/C10A at the optimum loading of 3 wt%, tensile strength improved by 21% and strain by 17%. This loading exhibited the finest morphological structure.

Mechanical, Thermal Stability and Water Absorption Properties of Recycled Thermoplastic Blend Nanocomposites: Comparison of Nanoclay and Carbon Nanotube

“…The rHDPE and rPET composition was fixed at a composition ratio of 75/25 (wt%) [4], whereas the Cloisite 10A and MWCNT loading were varied at 1, 2, 4 and 6 phr, respectively. The range of nanofiller content was determined based on the literature [24,25]. The rHDPE, rPET and nanofiller were melt-blended via co-rotating screw extruder (Thermo Prism TSE 16PC) with the temperature profiles of 190 ℃, 240 ℃, 270 ℃, and 250 ℃.…”

Improving the Thermal Behavior and Flame-Retardant Properties of Poly(o-anisidine)/MMT Nanocomposites Incorporated with Poly(o-anisidine) and Clay Nanofiller

“…This technology can be used in all areas of science, and so nanotechnology is a multidisciplinary technology [ 5 , 6 , 7 ]. Nanotechnology effectively addresses products with at least one aspect in the nanometer spectrum [ 8 , 9 , 10 , 11 ]. Nanotechnology involves buildings and systems with fresh characteristics owing to the configuration of their atoms [ 12 , 13 , 14 ].…”