Study on properties of polylactic acid/lemongrass fiber biocomposites prepared by fused deposition modeling

Jing, Huaishuai; He, Hui; Líu, Hao; Huang, Bowen; Zhang, Cheng

doi:10.1002/pc.25879

Cited by 38 publications

(18 citation statements)

References 46 publications

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“…Diverse conductive and other nanofillers can be introduced into PLA filaments, such as graphene, carbon black or carbon nanotubes, to increase their mechanical and/or conductive properties or to produce 3D printed sensors [ 6 , 7 ]. On the other hand, it is possible to introduce continuous filaments from diverse natural or man-made materials [ 8 , 9 ]. Generally, it is even possible to re-use solid PLA waste from diverse applications, such as food packaging and car dashboards, although at the price of a reduced tensile stress and flexural strength [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Shape-Memory Properties of 3D Printed PLA Structures with Different Infills

Ehrmann¹,

Ehrmann

2021

Polymers

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Polylactic acid (PLA) belongs to the few thermoplastic polymers that are derived from renewable resources such as corn starch or sugar cane. PLA is often used in 3D printing by fused deposition modeling (FDM) as it is relatively easy to print, does not show warping and can be printed without a closed building chamber. On the other hand, PLA has interesting mechanical properties which are influenced by the printing parameters and geometries. Here we present shape-memory properties of PLA cubes with different infill patterns and percentages, extending the research reported before in a conference paper. We investigate the material response under defined quasi-static load as well as the possibility to restore the original 3D printed shape. The quasi-static flexural properties are linked to the porosity and the infill structure of the samples under investigation as well as to the numbers of closed top layers, examined optically and by simulations. Our results underline the importance of designing the infill patterns carefully to develop samples with desired mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Investigation of the Shape-Memory Properties of 3D Printed PLA Structures with Different Infills

Ehrmann¹,

Ehrmann

2021

Polymers

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“…On the other hand, the most frequently used 3D printing materials for the fused deposition modeling (FDM) technique, i.e., acrylonitrile butadiene styrene (ABS), poly(lactic acid) (PLA) and a few others, often cannot reach the desired mechanical properties and the low surface roughness and waviness which are necessary in some applications [ 7 , 8 , 9 ]. Typically, the reduced mechanical properties are counteracted by heat post-treatments, by integrating nanofibers or nanoparticles [ 10 , 11 , 12 ] or continuous fibers [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

Pressure Orientation-Dependent Recovery of 3D-Printed PLA Objects with Varying Infill Degree

Ehrmann¹,

Ehrmann

2021

Polymers

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Poly(lactic acid) is not only one of the most often used materials for 3D printing via fused deposition modeling (FDM), but also a shape-memory polymer. This means that objects printed from PLA can, to a certain extent, be deformed and regenerate their original shape automatically when they are heated to a moderate temperature of about 60–100 °C. It is important to note that pure PLA cannot restore broken bonds, so that it is necessary to find structures which can take up large forces by deformation without full breaks. Here we report on the continuation of previous tests on 3D-printed cubes with different infill patterns and degrees, now investigating the influence of the orientation of the applied pressure on the recovery properties. We find that for the applied gyroid pattern, indentation on the front parallel to the layers gives the worst recovery due to nearly full layer separation, while indentation on the front perpendicular to the layers or diagonal gives significantly better results. Pressing from the top, either diagonal or parallel to an edge, interestingly leads to a different residual strain than pressing from front, with indentation on top always firstly leading to an expansion towards the indenter after the first few quasi-static load tests. To quantitatively evaluate these results, new measures are suggested which could be adopted by other groups working on shape-memory polymers.

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“…PLA/LF(lemongrass fiber) composite and PLA/LF with a compatibilizer composite were used to print parts by the FFF process in a research work by Jing et al [141]. The LF consists of cellulose, hemicellulose, and lignin.…”

Section: Bioplastic Compositesmentioning

confidence: 99%

A Review on Filament Materials for Fused Filament Fabrication

Dey

Eagle

Yodo

2021

JMMP

101

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Fused filament fabrication (FFF) is one of the most popular additive manufacturing (AM) processes that utilize thermoplastic polymers to produce three-dimensional (3D) geometry products. The FFF filament materials have a significant role in determining the properties of the final part produced, such as mechanical properties, thermal conductivity, and electrical conductivity. This article intensively reviews the state-of-the-art materials for FFF filaments. To date, there are many different types of FFF filament materials that have been developed. The filament materials range from pure thermoplastics to composites, bioplastics, and composites of bioplastics. Different types of reinforcements such as particles, fibers, and nanoparticles are incorporated into the composite filaments to improve the FFF build part properties. The performance, limitations, and opportunities of a specific type of FFF filament will be discussed. Additionally, the challenges and requirements for filament production from different materials will be evaluated. In addition, to provide a concise review of fundamental knowledge about the FFF filament, this article will also highlight potential research directions to stimulate future filament development. Finally, the importance and scopes of using bioplastics and their composites for developing eco-friendly filaments will be introduced.

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Study on properties of polylactic acid/lemongrass fiber biocomposites prepared by fused deposition modeling

Cited by 38 publications

References 46 publications

Investigation of the Shape-Memory Properties of 3D Printed PLA Structures with Different Infills

Investigation of the Shape-Memory Properties of 3D Printed PLA Structures with Different Infills

Pressure Orientation-Dependent Recovery of 3D-Printed PLA Objects with Varying Infill Degree

A Review on Filament Materials for Fused Filament Fabrication

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