Fused Filament Fabrication of Bio-Based Polyether-Block-Amide Polymers (PEBAX) and Their Related Properties

Abstract

This paper describes the application of poly(ether-block-amide) polymers, so-called Pebax, in fused filament fabrication (FFF). Pebax® is a thermoplastic elastomer (TPE), a copolymer based on rigid polyamide and soft polyether blocks. By variation of the blocks, unique properties such as soft or rigid behaviour are tailored without additional additives and plasticisers. Pebax®Rnew® polyamide blocks are bio-based and made from castor beans that allow the design of sustainable applications. In this study, two types of Pebax were selected, processing parameters were characterised, filaments were extruded and applied to FFF printing, and the final mechanical characteristics were determined. Both types were suitable for FFF processing with improved process stability due to less shear thinning and good mechanical performance. The connection strength between the grades was also described in the design context for complex parts with tailored soft or hard regions. Combining the two materials in one design is a promising concept, and the adhesion strength is close to the strength in the Z-direction of the flexible Pebax®Rnew®35R53 grade.

Polyetheramine‐Type Semi‐Biobased Long‐Chain Polyamide 1210 Elastomer: Synthesis, Structure, and Unique Thermal Behavior

“…Peak values of Tan δ reported for PEBAX are all below 0.16, which is a consequence of the absence of any side groups in its backbone structure. [ 47 ] On the other hand, the presence of numerous −CH 3 side groups in the PEA backbone can significantly enhance the energy absorption capacity. The Tan δ peaks for all five TPAEs are higher than 0.16, as reflected in the test results.…”

Synthesis and characterization of a high-performance bio-based Pebax membrane for gas separation applications

“…Pebax Rnew polymer is synthesized by the polycondensation of renewable polyamides (PA11) with an alcohol-terminated polyether. 21…”

“…Pebax Rnew polymer is synthesized by the polycondensation of renewable polyamides (PA11) with an alcohol-terminated polyether. 21 Martı ´nez-Izquierdo et al synthesized Pebax Rnew membranes for single and mixed gas permeation studies. Compared to other Pebax grades, 1657 and Rnew exhibited superior separation performance due to the presence of polyethylene oxide as the soft segments, which show more interaction with CO 2 gas molecules.…”

Pathway for Water Transport through Breathable Nanocomposite Membranes of PEBAX with Ionic Liquid [C12C1im]Cl

“…PEBAX@2533 [80PTMO/PA12] is an elastomeric block copolyamide with high processability [ 1 , 2 ], mechanical strength [ 3 ], and high-performing permeability to vapors and quadrupolar and condensable gases [ 4 , 5 , 6 , 7 ]. These features make it particularly attractive and competitive for applications in wearable textiles [ 8 ], industrial equipment [ 4 , 9 , 10 ], microelectronics [ 11 ], and environmental protection [ 12 ].…”