Integrating helicoid channels for passive control of fiber alignment in direct-write 3D printing

Khatri, Nava Raj; Islam, Md. Nurul; Cao, Pengfei; Advincula, Rigoberto C.; Choi, Wonbong; Jiang, Yijie

doi:10.1016/j.addma.2021.102419

Cited by 4 publications

(4 citation statements)

References 32 publications

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“…Ink rheology plays a critical role in formulating 3D printable inks for direct ink writing (DIW) 3D printing. DIW is an additive manufacturing technique that uses viscoelastic inks to fabricate 3D objects in a layer-by-layer deposition manner. ,, The printable materials need to have shear thinning and yielding properties within a reasonable range of yield strength. ,,, Due to induced shear stress at the nozzle, the ink can be extruded from the nozzle at ambient conditions and turn into a gel-like material to retains its shape after extrusion. ,,, Figure b shows the 3D printing process of corn starch with a 10 wt % cellulose fiber (CS-CF10) composite ink into a triangular cellular structure (Figure c).…”

Section: Resultsmentioning

confidence: 99%

“…8,13,37 The printable materials need to have shear thinning and yielding properties within a reasonable range of yield strength. 8,13,38,39 Due to induced shear stress at the nozzle, the ink can be extruded from the nozzle at ambient conditions and turn into a gel-like material to retains its shape after extrusion. 8,13,38,39 Figure 2b shows the 3D printing process of corn starch with a 10 wt % cellulose fiber (CS-CF10) composite ink into a triangular cellular structure (Figure 2c).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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3D Printable Sustainable Composites with Thermally Tunable Properties Entirely from Corn-Based Products

Islam

Jiang

2022

ACS Sustainable Chem. Eng.

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Renewable and biodegradable composites derived from natural resources are receiving increasing attention for sustainable manufacturing. Developing eco-friendly and robust biocomposites can alleviate health and environmental concerns associated with the reliance on petroleum-based plastics. Here, we develop a sustainable composite, made entirely from corn products and waste, and investigate a thermally strengthened mechanism for tunable mechanical properties. A two-step chemical process is used to extract cellulose fibers from corn husks and distribute them in corn starch-derived matrices to develop 3D printable biocomposites. Ink preparation is tailored with water content and thermal treatment to achieve desired rheological properties for direct ink writing. By harnessing a thermally controlled hydrogen bonding mechanism between matrix and fibers, the printed samples have tunable mechanical properties up to 3.3 fold. The chemical interactions among amylopectin molecules also result in different porous microstructures, leading to lightweight composites. The composites purely from biomass and waste are a new class of additively manufacturable sustainable materials that can be used as alternatives to petroleum-based plastics in engineering applications and in the fields of medicine and the food industry.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

3D Printable Sustainable Composites with Thermally Tunable Properties Entirely from Corn-Based Products

Islam

Jiang

2022

ACS Sustainable Chem. Eng.

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“…In summary, 3D printing has its unique advantages in manufacturing complex 3D structures, controlling internal microstructures, performing in situ poling of sensor materials, embedded printing of functional units into structural materials, and achieving seamless manufacturing processes. [31,77,[113][114][115] Compared to traditional manufacturing technology, current 3D printing technology still has technical and commercial barriers in time and economic cost and needs novel and high-performance printable materials. The developments in multimaterial printing and smart materials via 4D printing are advancing to resolve these challenges.…”

Section: Functional and 4d Printingmentioning

confidence: 99%

Recent Advances in 3D Printed Sensors: Materials, Design, and Manufacturing

Jiang

Islam

et al. 2022

Adv Materials Technologies

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Market research shows that the global 3D printing market size was $16.54 billion in 2021 and is expected to have a growth rate of 21.0% from 2021 to 2028. The global market will reach around $63 billion by 2028. [1] 3D printing has been used in different environments ranging from ambient home and office use, bioimplant printing, to zero gravity space 3D printing, such as functional living organism's body parts, [2] and zero-gravity 3D printing in the international space station. [3] Apart from lab printing of delicate designs, 3D printing technology is being used for industrial [4] and construction [5] purposes. It has gained research and industrial interests in broad areas, including biomedical applications, [6,7] lightweight engineering materials, [7][8][9][10] electronics and sensors, [11] fiber-reinforced and multifunctional composites, [8,9,[12][13][14][15][16][17] and shape morphing designs. [6,18] Among different 3D printed devices, 3D printed sensors have been attracting significant attention. In sensors manufacturing, it is important for 3D printing of complementary accessories, embedded sensing components, as well as seamless fabrication of whole sensors [19] .Traditional manufacturing methods, such as coating and injection molding, are incompatible for fabricating complex structured sensors.

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“…[20,45] These changes in material properties are even more abrupt in the presence of solid fillers (the active phase of the multifunctional material). [46][47][48] To overcome these issues, previous works used inks that either introduce additives to enhance the printability of the material or combined different elastomeric matrices. [18,24,49,50] The addition of other phases or additives not only impacts the material printability, but also its final properties.…”

Section: Introductionmentioning

confidence: 99%

Computationally Guided DIW Technology to Enable Robust Printing of Inks with Evolving Rheological Properties

López-Donaire

Aranda‐Izuzquiza

Garzon-Hernandez

et al. 2022

Adv Materials Technologies

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Soft multifunctional materials allow for mechanical sensing or actuation as a response to multiple physical stimuli, while providing material stiffness that mimic soft biological tissues (≈1–10 kPa). One of the main bottlenecks in the state of the art relates to the difficulty for manufacturing complex shapes when using inks whose properties significantly change over the printing time. To overcome this issue, the implementation of a hybrid (theoretical‐experimental) framework that allows optimal printability of time‐dependent viscosity inks by using the direct ink writing technology. Although the rheological properties of the ink vary during printing time, a combination of theoretical and experimental methods provides evolving printing conditions that ensure efficient and robust printability over the process. The method removes the need of introducing additives to the ink. To enable this technology, an in‐house printer that provides flexibility to modulate the extrusion pressure over printing time is developed. The method is validated by manufacturing magnetorheological elastomers and conductive soft materials for specific bioengineering and soft electronics applications.

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Integrating helicoid channels for passive control of fiber alignment in direct-write 3D printing

Cited by 4 publications

References 32 publications

3D Printable Sustainable Composites with Thermally Tunable Properties Entirely from Corn-Based Products

3D Printable Sustainable Composites with Thermally Tunable Properties Entirely from Corn-Based Products

Recent Advances in 3D Printed Sensors: Materials, Design, and Manufacturing

Computationally Guided DIW Technology to Enable Robust Printing of Inks with Evolving Rheological Properties

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