Ternary polymer blends of polyamide 6, polypropylene, and acrylonitrile‐butadiene‐styrene: Influence of multiwalled carbon nanotubes on phase morphology, electrical conductivity, and crystallization

Abstract

Ternary polymer blends of 80/10/10 (wt/wt/wt) polyam-ide6 (PA6)/polypropylene (PP)/acrylonitrile-butadienestyrene (ABS), PP/PA6/ABS, and ABS/PP/PA6 were prepared in the presence of multiwalled carbon nanotubes (MWCNTs) by melt-mixing technique to investigate the influence of MWCNTs on the phase morphology, electrical conductivity, and the crystallization behavior of the PP and PA6 phases in the respective blends. Morphological analysis showed the ''coreshell''-type morphology in 80/10

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

“…The addition of MWNTs does not alter the ''core-shell'' type of morphology in 80/10/10 (wt/wt/wt) PA6/PP/ABS ternary blends. The refinement in the dispersed phase of the binary and the ternary blends of PA6/ABS, PP/ ABS, and PA6/PP/ABS has earlier been observed with the addition of higher concentration of MWNTs, 26,32,6 which has been understood on the basis of compatibilizer-like action of MWNTs. This observation suggests the ''compatibilizerlike'' action of MWNTs is not evident up to 2 wt % concentration.…”

“…Moreover, PA6 concentration is also very small as compared to the PP phase. The state of dispersion of MWNTs in the PP and PA6 phases has been earlier observed through SEM morphological analysis in 80/10/10 (wt/wt/wt) PP/PA6/ABS ternary blends, 6 where the migration of a small fraction of MWNTs from the PP phase to the PA6 phase has been observed. This fact is well in agreement with the SEM observations [shown in Figure 7(b)], where it is found that the reduction in domain size of the dispersed phase in 80/ 10/10 (wt/wt/wt) PP/PA6/ABS ternary blends is maximum in the presence of PP-g-MA.…”

“…Furthermore, a-relaxation peak of PA6 is shifted towards the higher temperature side [ Figure 4(a)] for 80/10/10 (wt/wt/wt) PA6/PP/ABS ternary blends in the presence of compatibilizer, which indicates a restriction in PA6 chain mobility due to meltinterfacial reaction in the presence of the compatibilizer. 6,26 Figure 4(c) depicts the variation of dielectric loss modulus as a function of frequency for pure PA6 and 80/10/10 (wt/wt/wt) PA6/ PP/ABS ternary polymer blends in the presence of compatibilizer at a fixed temperature of 80 C, which is in the range of a-relaxation process of PA6 phase. Interestingly, it is observed from Figure 4(b) that with increase in MWNTs concentration, a-relaxation peak of PA6 is also shifted towards the higher temperature side manifesting the fact that MWNTs may as well hinder the chain mobility of PA6 phase.…”

“…This fact may be attributed to the localization of a majority fraction of MWNTs in the matrix phase (i.e., PP phase), which may alter the viscosity ratio and may also act as a physical barrier which may prevent the coalescence process. 6 Dielectric Relaxation Spectroscopy of 80/10/10 (wt/wt/wt) PP/PA6/ABS Ternary Polymer Blends Figure 8(a) exhibits the dielectric loss modulus as a function of temperature for 80/10/10 (wt/wt/wt) PP/PA6/ABS ternary polymer blends in the presence of compatibilizer at a fixed frequency of 1 KHz. 6 Dielectric Relaxation Spectroscopy of 80/10/10 (wt/wt/wt) PP/PA6/ABS Ternary Polymer Blends Figure 8(a) exhibits the dielectric loss modulus as a function of temperature for 80/10/10 (wt/wt/wt) PP/PA6/ABS ternary polymer blends in the presence of compatibilizer at a fixed frequency of 1 KHz.…”

“…[1][2][3][4][5][6] Morphology, which develops during melt-mixing, is one of the most important factors in deciding the final property of the blends. [1][2][3][4][5][6] Morphology, which develops during melt-mixing, is one of the most important factors in deciding the final property of the blends.…”