Morphology and dielectric relaxation spectroscopy of ternary polymer blends of polyamide6, polypropylene, and acrylonitrile butadiene styrene co‐polymer: Influence of compatibilizer and multiwall carbon nanotubes

Abstract

Morphological investigation was carried out with melt-mixed ternary polymer blends of polyamide6 (PA6), polypropylene (PP) and acrylonitrile butadiene styrene copolymer (ABS) in the presence of compatibilizer and multiwall carbon nanotubes (MWNTs). 80/10/10 (wt/wt/wt) PA6/PP/ABS and 80/10/10 (wt/wt/wt) PP/PA6/ABS blends exhibited ''core-shell'' morphology, whereas 80/10/10 (wt/wt/wt) ABS/PP/PA6 blends exhibited ''separately dispersed'' phase morphology. The type of phase morphology was unaltered in the presence of either compatibilizer or MWNTs in the respective ternary polymer blends. The morphological refinement in the presence of compatibilizer was explained on the basis of melt-interfacial reaction. In contrast, the refinement in the dispersed droplets in the presence of MWNTs was due to the localization of MWNTs in the specific phase. Dynamic relaxation spectroscopic analysis indicated an increase in the relaxation time of PA6 chain in the presence of compatibilizer in the corresponding ternary blends. The variation in the relaxation time was dependent on the efficiency of the compatibilizer. The variation in the relaxation time for PA6 in the presence of 1 wt% MWNTs in the respective ternary blends also followed a similar trend; however, the extent of mobility of PA6 phase was influenced by the state of dispersion of MWNTs in the corresponding blends.

The simultaneous addition of styrene maleic anhydride copolymer and multiwall carbon nanotubes during melt-mixing on the morphology of binary blends of polyamide6 and acrylonitrile butadiene styrene copolymer

“…Lower torque value for the blends with SMA + MWNTs as compared to the blend containing only SMA could originate from a lower extent of melt–interfacial reaction between PA6 and SMA copolymer in presence of MWNTs. A similar observation was also observed in 80/10/10 (wt/wt/wt) PA6/PP/ABS ternary polymer blends in presence of SMA copolymer and MWNTs . However, a minor fraction of MWNTs may even be wrapped with SMA copolymer, which may be trapped at the interface, since SMA copolymer may interact well with MWNTs.…”

“…Amide I and amide II peaks (∼1543 and ∼1642 cm −1 , respectively) can be observed from the plot which are the characteristic peaks for PA6 phase. The peaks at ∼1736 and ∼1776 cm −1 in presence of SMA copolymer confirms the imide bond formation due to the melt–interfacial reaction during melt‐mixing .…”

“…In general, torque value during melt‐mixing provides an indirect assessment of the variation of melt viscosity . The torque value increases with the addition of MWNTs in the blends, which may be due to the presence of solid filler viz .…”

Morphology and Electrical Conductivity of Ternary Polymer Blends Involving Liquid Crystalline Polymer Containing Carbon Nanotubes

“…Thus, the refinement in the ‘co‐continuous’ structure of the blends can be explained due to compatibilizer‐like action of MWCNTs though MWCNTs did not change the interfacial behavior . Similar observations have been made in the case of binary blends of PP/ABS and ternary blends of PA6/PP/ABS, wherein the nanotubes selectively localized in one of the phases and altered the viscosity‐ratio and also prevented the rate of coalescence of the droplets by acting as a physical barrier between the droplets …”

Structural, rheological, and mechanical properties of PA6/SAN/SEBS ternary blend/organoclay nanocomposites

“…In another work, Panda et al . investigated the influence of MWCNTs addition on the phase morphology and electrical conductivity of PP/PA6/ABS ternary blends . They showed that incorporation of MWCNTs into ternary blends, generally, did not alter the type of phase morphology corresponding to respective blends.…”