Extrusion 3D Printing of Polybutyrate-Adipate-Terephthalate-Polymer Composites in the Pellet Form

Singamneni, Sarat; Smith, Dawn A.; LeGuen, Marie-Joo; Truong, Derryn

doi:10.3390/polym10080922

Cited by 39 publications

(47 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fused deposition modelling is an unstable process and the diameter of filaments extruded by nozzles is not consistent. The diameter of polybutyrate-adipate-terephthalate–polymer (PBAT) filament measured by Sarat Singamneni et al [23] shows that the measured value decreases continuously. Moreover, in the printing process, due to the large shrinkage rate of pure PA12 material, warp deformation easily occurs.…”

Section: Resultsmentioning

confidence: 99%

PA12 Powder Recycled from SLS for FDM

Wang

Wei

2019

Polymers

View full text Add to dashboard Cite

In this study, Polyamide 12 (PA12) powder recycled after selective laser sintering (SLS) was made into filaments for fused deposition modelling (FDM). Compared with fresh PA12, the melt flow rate (MFR) of the recycled PA12 powder decreased by 77%, but the mechanical properties were only slightly reduced. In FDM, the printing speed and building orientation were changed, and the performance of the printed parts was tested. If the printing speed is too fast or too slow, the mechanical properties of the parts will be affected, and there is an optimal speed range. The tensile strength, flexural modulus, and impact strength of a printed test sample made from recycled powder reached 95%, 85%, and 87% of an x-direction test sample made from fresh PA12, respectively. For test samples printed from different orientations, the mechanical properties of the test samples printed in the x-direction were the best, while the crystallization performance was the opposite. Scanning electron microscope (SEM) images show that the printed test sample had good compactness and mechanical properties, and the delamination phenomenon was basically not observed.

show abstract

Section: Resultsmentioning

confidence: 99%

PA12 Powder Recycled from SLS for FDM

Wang

Wei

2019

Polymers

View full text Add to dashboard Cite

show abstract

“…In this extrusion-based technique either a thermoplastic filament is fed into a heated printhead to be melted and printed on a 2 or 3 directional moving bed or viscoelastic material is forced through a moving tiny nozzle using an external pressure to directly write a desired object based on a 3D CAD model. The former is named as Fused Deposition Modeling (FDM), also known as Fused Filament Fabrication (FFF) (Figure 2(a)), and the latter is known as Robocasting or Direct Ink Writing (DIW) (Figure 2(b)) [72]- [74].…”

Section: Extrusion Based 3d Printingmentioning

confidence: 99%

Smart polymers and nanocomposites for 3D and 4D printing

et al. 2020

View full text Add to dashboard Cite

“…Nevertheless, PLA is known for its brittleness, low elongation at break, low impact strength, slow crystallization, and low heat distortion temperature. The incorporation of polymer blends and composites can overcome these drawbacks of PLA [17][18][19][20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, PBAT is considered as a good candidate for enhancing the ductility of PLA [20][21][22][23][24]. Although PBAT is flexible and has superior toughness, it possibly loses dimensional stability during 3D printing [25]. Additionally, most 3D printing technologies require appropriate additives and fillers for controlling the printability and quality of 3D printing products [14].…”

Section: Introductionmentioning

confidence: 99%

Properties of 3D Printable Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends and Nano Talc Composites

Prasong

Muanchan

Ishigami

et al. 2020

Journal of Nanomaterials

View full text Add to dashboard Cite

Biodegradable poly(lactic acid) (PLA) filaments have been widely used in the fused deposition modeling (FDM) 3D printing technology. However, PLA has low toughness and low thermal resistance that affects printability and restricts its industrial applications. In this study, PLA was compounded with 0 to 40 wt% of poly(butylene adipate-co-terephthalate) (PBAT) and varied content of nano talc at 0 to 40 wt% in a twin screw extruder. The compounds were reextruded to filaments using a capillary rheometer. PLA/PBAT blends and their composite filaments were printed with a FDM 3D printing machine. Morphology, rheological behaviour, thermal characteristic, surface roughness, and mechanical property of 3D printing of the blends and the composites were investigated. Complex viscosity of the blends and the composites increased with increase of the PBAT and the nano talc contents. The incorporation of the nano talc enhanced crystallization temperature and reduced the coefficient of volume expansion of the composites. It was found that the PLA/PBAT blends and composites were excellent in both printability and dimension stability at PBAT content 10-30 wt% and nano talc up to 10 wt%. Interestingly, it was possible to print the composite filaments at an angle up to 75° during the overhang test without a supporter. From the vertical specimens, the surface roughness improved due to the incorporation of the nano talc. Tensile strength of the blends and the composites decreased, whereas elongation at break increased when the PBAT and the nano talc contents were increased. The reduction of tensile strength was attributed to agglomeration of the PBAT dispersed phase and less adhesion between the nano talc and the matrix. It can be noted that the composite 3D printing product showed superior elongation at break up to 410% by adding nano talc 1 wt%. This result suggests that the ductile 3D printable PLA/PBAT blend and the PLA/PBAT-nano talc composite products can be prepared, which shows potential for the commercialized scale.

show abstract

Extrusion 3D Printing of Polybutyrate-Adipate-Terephthalate-Polymer Composites in the Pellet Form

Cited by 39 publications

References 16 publications

PA12 Powder Recycled from SLS for FDM

PA12 Powder Recycled from SLS for FDM

Smart polymers and nanocomposites for 3D and 4D printing

Properties of 3D Printable Poly(lactic acid)/Poly(butylene adipate-co-terephthalate) Blends and Nano Talc Composites

Contact Info

Product

Resources

About