Morphology, dynamic mechanical, and electrical properties of bio‐based poly(trimethylene terephthalate) blends, part 1: Poly(trimethylene terephthalate)/poly(ether esteramide)/polyethylene glycol 400 bis(2‐ethylhexanoate) blends

Abstract

Bio-based PTT and PTT blends with PEEA of two different ion contents (275 ppm Na and 3515 ppm Na) and PEG 400 bis (2-ethylhexanoate) were prepared by melt processing. The blends were characterized by differential scanning calorimetry, dynamic mechanical analysis, transmission electron microscopy, and atomic force microscopy. Electro-static performance was also investigated for those PTT blends since PEEA is known as an ion conductive polymer. Here we confirmed that PEG 400 bis (2-ethylhexanoate) improves the static decay performance of PTT/PEEA blends. DMA strongly suggests that PEG 400 bis (2-ethylhexanoate) and PEEA are miscible pairs, and PEG 400 bis (2-ethylhexanoate) selectively goes into the PEEA phase rather than the PTT phase, which lowers the T g of PEEA. Besides topographic analysis of morphology and phase separation, tunneling atomic force microscopy was also applied to see if we can observe the surface directly for the static dissipative material.

Morphology, dynamic mechanical, and electrical properties of bio‐based poly(trimethylene terephthalate) blends, part 2: Poly(trimethylene terephthalate)/poly(ether esteramide)/polycarbonate blends

“…Through our attempt to reduce the T g of PEEA domain, we found polyethylene glycol 400 bis(2-ethylhexanoate) worked to reduce the T g of PEEA by melt extrusion process technique. 44 We confirmed static dissipative performance of the blends was significantly improved by reducing the T g for PEEA in the blends. We believe it is explained by enhancing the ion mobility in PEEA domains through reducing the glass transition temperature of PEEA which is an ion conductive polymer.…”

“…44 We confirmed that static dissipative performance of the blends was significantly improved by reducing the T g for PEEA in the blends. We believe it is explained by enhancing the ion mobility in PEEA domains through reducing the glass transition temperature of PEEA which is an ion conductive polymer.…”

“…PC retards the electrostatic performance of PTT/10%PEEA by restricting the sodium ion mobility in PEEA by increasing the T g of PEEA and by transforming the surface morphology from lamellar to isolated dispersed domains of PEEA. In other words, this study combined with our last investigation, 44 antistatic performance is significantly affected by the T g of PEEA domain, which is an ion conductive polymer, in the polymer blends. We verified here static dissipative performance is dramatically worsened when the T g of PEEA is increased on addition of PC.…”

Novel biocomposites from poly(trimethylene terephthalate) and recycled carbon fibres

“…E / first decreased and reached a minimum around 70°C and then increased. This behaviour is due to a relaxation (glass transition) and cold crystallization of PTT [35]. The a relaxation temperature (T a ) of PTT was around 61°C (Fig.…”