Effect of thermoplastic polyurethane (TPU) on the thermal and mechanical properties of polylactic acid (PLA)/curcumin blends

Sharifah, I.S.S.; Adnan, Mhd.; Khairusshima, M.K. Nor; Shaffiar, Norhashimah; Buys, Yose Fachmi

doi:10.1088/1757-899x/290/1/012081

Cited by 4 publications

(6 citation statements)

References 7 publications

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“…Therefore, to obtain optimal performance, it is necessary to prepare PLA/TPU composites with tailored strength, modulus, and elongation. 11…”

Section: Tensile Propertiesmentioning

confidence: 99%

Application of a thermoplastic polyurethane/polylactic acid composite filament for 3D-printed personalized orthosis

Tao¹,

Shao²,

Li³

et al. 2019

Mater. Tehnol.

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For designing and fabricating personalized, cost-effective and biodegradable orthoses, a finger orthosis was chosen as an example to explore a suitable material, personalized design method, and fabrication with a fuse-deposition-modeling (FDM) open-source 3D printer. Thermoplastic polyurethane (TPU)/polylactic acid (PLA) composite filaments were explored for 3D printing. The polymer composite compositions were TPU/PLA: 0 %/100 % (TP0), 25 %/75 % (TP25), and 50 %/50 % (TP50) by weight, respectively. The mechanical performance, thermal properties, and structure of the TPU/PLA composite filaments were assessed by tensile tests, thermal gravimetric analysis (TGA), differential scanning calorimetry (DSC), and powder X-ray diffraction (XRD) measurements. Compared to the neat PLA, the TP25 specimens exhibited almost the same tensile strength, but its higher elongation at the break indicates that TP25 is more suitable for the material of orthoses. However, a further increase of the TPU ratio to 50 % resulted in a sharp decrease of the tensile strength. The addition of TPU had little effect on the starting thermal decomposition temperature, glass-transition temperature, and melting temperature of the composites. The composite filaments can be printed through the normal 3D printing procedure. 3D scanning and open-source 3D printers can be used to complete the design and fabrication of personalized orthoses.

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“…Therefore, to obtain optimal performance, it is necessary to prepare PLA/TPU composites with tailored strength, modulus, and elongation. 11…”

Section: Tensile Propertiesmentioning

confidence: 99%

Application of a thermoplastic polyurethane/polylactic acid composite filament for 3D-printed personalized orthosis

Tao¹,

Shao²,

Li³

et al. 2019

Mater. Tehnol.

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“…Furthermore, according to He et al [104], the amount of T g value that decreases can be adjusted by tuning the amount of hard segments or soft segments molecular weight in TPU [104]. However, Sharifah et al [93] found different conclusions regarding the T g value from both research mentioned earlier. From her experimental results, she found that adding 30 wt% − 50 wt% of TPU in PLA/curcumin blend does not affect T g value that much as the range of T g value obtained were around 57 °C-60 °C which is not much.…”

Section: Thermal Properties Of Pla/tpu Blend Shape Memory Polymermentioning

confidence: 99%

“…In recent years, the research regarding materials needed for 4DP technology has been focused not only on polylactic acid (PLA) but also on thermoplastic polyurethane (TPU) [92]. This is because, nowadays, the demand for polymeric materials that are derived from renewable and sustainable sources like PLA and TPU is increasing [93]. TPU is also commonly used in the 4DP process [54] due to its properties.…”

Section: Tpu-based Shape Memory Polymermentioning

confidence: 99%

4D printing of polylactic acid (PLA)/thermoplastic polyurethane (TPU) shape memory polymer – a review

Hamidi,

Abdullah,

Shuib

et al. 2024

Eng. Res. Express

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Recently, there has been rising interest in 4D printing (4DP) technology. It is a new technology that emerged from 3D printing technology but can produce a dynamic product that can change its shape and properties when subjected to external stimuli. 4DP is an additive manufacturing process that uses materials receptive to stimuli, such as shape memory polymer (SMP), that can alter its shape once exposed to applied stimuli like heat, water, light, electricity, pressure, etc. Two frequently used SMPs are polylactic acid (PLA) and thermoplastic polyurethane (TPU), owing to their excellent shape memory properties, biodegradability, and biocompatibility. The shape memory performance of the 4D printed SMP is quantified by shape recovery ratio (Rr) and shape fixity ratio (Rf), which is highly dependent on the printing parameters. Some of the important printing parameters that influence shape memory performance are printing speed, raster angle, layer thickness, and nozzle temperature. Due to 4DP’s ability to produce a dynamic product, it is widely used to revolutionize several fields such as biomedical, textile, aerospace, soft robotic, and electronic fields. This review paper discusses and provides a better understanding of the 4DP technology, the shape recovery mechanism, the effect of 4DP parameters on shape recovery performance, applications of 4DP technology, challenges faced, and future perspectives regarding the 4DP technology

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“…Such that the base polymer is biodegradable and TPU is an effective, flexible material with excellent mechanical properties such as high elasticity, flexibility, and high resistance to tearing oxidation and moisture; so, unique properties may be presented by the combination of PLA and TPU. [23][24][25] 3D printing could be defined as a method of fabricating 3D objects based on the controlled deposition of successive layers of materials until a final structure is created. 12,[26][27][28] This can be achieved using computer-aided design (CAD) software or a 3D scanner or by using photogrammetry, where the model is obtained by combining multiple images taken from different positions of the object.…”

Section: Introductionmentioning

confidence: 99%

Additive manufacturing and investigation of shape memory properties of polylactic acid/thermoplastic polyurethane blend

Abidaryan

Akhoundi

Hajami

2022

Journal of Elastomers & Plastics

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The fused filament fabrication (FFF) process is one of the most widely used additive manufacturing (AM) methods in producing parts with relatively complex geometry due to its low cost and high capability. Using this blend along with the 3D printing method to make complex shapes can have a high potential in medical applications such as stents, so the goal of the following study is to investigate the shape memory properties of Polylactic Acid/Thermoplastic polyurethane (PLA/TPU) blend. The printed samples with 100/0, 80/20, and 60/40 PLA/TPU composition ratios were comprehensively evaluated based on their structural, thermal, and shape memory properties. A differential scanning calorimetry (DSC) test was conducted to determine the glass transition temperatures and crystallization temperature zone of the blends. A full factorial design of experiments was employed to investigate the effect of three variables called composition ratio, printing angle, and filling percentage on shape memory behavior. Using the three-point flexural test, the shape memory behavior of printed samples with composition ratios 100/0,80/20, 60/40, and filling percentages of 50, 75, and 100%, along with printing angles of zero, ±45, and 90°, was evaluated and measured. The annealing process increased the force required to change the shape and crystallization percentage, such that not being processed, no crystals were observed in the X-ray diffraction (XRD) analysis of the samples, while after being annealed, up to 38% of the crystals were formed. Increasing the percentage of TPU and temperature led to the softening of the samples, reducing the strength and elastic modulus, as well. Enhancing the percentage of TPU also decreases the hydrophilic properties of the samples. The results showed that the best shape memory performance is related to the 20 weight percentage of TPU composition, and the maximum recovery force ratio belongs to the sample with such a composition, zero printing angles, and 75% filling percentage, which equals 81.56%, while it equals 74% using compression molding (CM) in all three production blends.

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Effect of thermoplastic polyurethane (TPU) on the thermal and mechanical properties of polylactic acid (PLA)/curcumin blends

Cited by 4 publications

References 7 publications

Application of a thermoplastic polyurethane/polylactic acid composite filament for 3D-printed personalized orthosis

Application of a thermoplastic polyurethane/polylactic acid composite filament for 3D-printed personalized orthosis

4D printing of polylactic acid (PLA)/thermoplastic polyurethane (TPU) shape memory polymer – a review

Additive manufacturing and investigation of shape memory properties of polylactic acid/thermoplastic polyurethane blend

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