Cross-linkable multi-stimuli responsive hydrogel inks for direct-write 3D printing

Karis, Dylan; Ono, Robert J.; Zhang, Musan; Vora, Ankit; Storti, Duane W.; Ganter, Mark A.; Nelson, Alshakim

doi:10.1039/c7py00831g

Cited by 55 publications

(35 citation statements)

References 59 publications

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“…From am olecular design perspective, intensively investigated block copolymer phase segregation [68,69,[126][127][128] is ap romis-ing path to design DIW polymers. Furthermore, the rich toolbox containing av ariety of supramolecular binding motifs could also be transferred for the development of DIW inks.…”

Section: Discussionmentioning

confidence: 99%

“…To invert the hydrophobic and hydrophilic segments of the amphiphilic polymer, Nelson et al. reported a series of triblock copolymers (P i PrGE‐ b ‐PEG‐ b ‐P i PrGE) composed of a polyethylene glycol (PEG) core and two poly(isopropyl glycidyl ether) (P i PrGE) tails (Figure a) . These copolymers aggregate in aqueous solutions to form micelles.…”

Section: Facilitating 3d Printability To Polymersmentioning

confidence: 99%

“…To invert the Figure 2a). [68,69] These copolymers aggregate in aqueouss olutions to form micelles.W hen the concentration of PiPrGE-b-PEG-b-PiPrGE reaches 14 w/w %, 3D printable viscoelastic hydrogels were obtained. Photoirradiation of the micellar F127-DA hydrogel and the PiPrGE-b-PEG-b-PiPrGE hydrogel with thiol cross-linkers affords robust, chemically cross-linked 3D monoliths.…”

Section: Micellar Hydrogelsmentioning

confidence: 99%

See 2 more Smart Citations

Advanced Polymer Designs for Direct‐Ink‐Write 3D Printing

Lin

Tang

et al. 2019

Chemistry A European J

194

161

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The rapid development of additive manufacturing techniques, also known as three‐dimensional (3D) printing, is driving innovations in polymer chemistry, materials science, and engineering. Among current 3D printing techniques, direct ink writing (DIW) employs viscoelastic materials as inks, which are capable of constructing sophisticated 3D architectures at ambient conditions. In this perspective, polymer designs that meet the rheological requirements for direct ink writing are outlined and successful examples are summarized, which include the development of polymer micelles, co‐assembled hydrogels, supramolecularly cross‐linked systems, polymer liquids with microcrystalline domains, and hydrogels with dynamic covalent cross‐links. Furthermore, advanced polymer designs that reinforce the mechanical properties of these 3D printing materials, as well as the integration of functional moieties to these materials are discussed to inspire new polymer designs for direct ink writing and broadly 3D printing.

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Section: Discussionmentioning

confidence: 99%

Section: Facilitating 3d Printability To Polymersmentioning

confidence: 99%

Section: Micellar Hydrogelsmentioning

confidence: 99%

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Advanced Polymer Designs for Direct‐Ink‐Write 3D Printing

Lin

Tang

et al. 2019

Chemistry A European J

194

161

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“…These results suggest that such physical hydrogels are very suitable for DIW applications, which were indeed demonstrated as capable of printing free‐standing patterned structures with good fidelity. The authors suggested that the gel yield stress is also an important parameter to be considered for gel extrusion, [ 83 ] as it provides an indirect indication of the gel's ability to support subsequent stacked layers during 3D printing. Nelson and co‐workers have also demonstrated that both dynamic and the static yield stress could be tuned by varying hydrogel formulations and are critical rheological parameters for printability.…”

Section: Materials Designs For 3d Printabilitymentioning

confidence: 99%

“…The use of dynamic bonds which undergo reversible breaking, exchange and reformation could be utilized to modify the printability of polymers as well as imparting various advanced functions. [ 41–58,62–67,59,68,60,69,70,72,61,73,71,82,86–88,74–81,83–85,89–133,244,258 , …”

Section: Summary and Perspectivementioning

confidence: 99%

Extrusion 3D Printing of Polymeric Materials with Advanced Properties

et al. 2020

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3D printing is a rapidly growing technology that has an enormous potential to impact a wide range of industries such as engineering, art, education, medicine, and aerospace. The flexibility in design provided by this technique offers many opportunities for manufacturing sophisticated 3D devices. The most widely utilized method is an extrusion‐based solid‐freeform fabrication approach, which is an extremely attractive additive manufacturing technology in both academic and industrial research communities. This method is versatile, with the ability to print a range of dimensions, multimaterial, and multifunctional 3D structures. It is also a very affordable technique in prototyping. However, the lack of variety in printable polymers with advanced material properties becomes the main bottleneck in further development of this technology. Herein, a comprehensive review is provided, focusing on material design strategies to achieve or enhance the 3D printability of a range of polymers including thermoplastics, thermosets, hydrogels, and other polymers by extrusion techniques. Moreover, diverse advanced properties exhibited by such printed polymers, such as mechanical strength, conductance, self‐healing, as well as other integrated properties are highlighted. Lastly, the stimuli responsiveness of the 3D printed polymeric materials including shape morphing, degradability, and color changing is also discussed.

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A Review on Printing of Responsive Smart and 4D Structures Using 2D Materials

Cataldi

Liu

Bissett

et al. 2022

Adv Materials Technologies

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3D printing is revolutionizing the manufacturing sector due to the myriad of materials and techniques available. Furthermore, it allows decentralized production sites for both industry and the public. However, it is restricted to static structures that cannot react to external stimuli or adapt to the environment and are, therefore, not suitable for functional and motile parts. Recently, two approaches are proposed to give dynamism to 3D printed structures: the printing of “stimulus‐responsive” (a.k.a. smart) materials and “4D printing,” the first implying features change due to a stimulus while the second indicating the time evolution of properties after a stimulus activation. Nanomaterials, particularly 2D nanomaterials, exhibit a broad and distinctive combination of features. Thus, they are highly effective at enabling this dynamism due to their morphological, optoelectrical, and mechanical properties. This review summarizes recent advances in 3D/4D printing of smart deformable and stimuli‐responsive materials which utilize 2D nanomaterials. The benefits of 2D materials in this framework are summarized, and how to translate their potential into 3D/4D printing is also discussed. The most promising achievements to date are deformable piezoresistive materials for strain sensing, Joule heaters, and actuators. Future advancements and possible upcoming application areas are finally proposed.

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Cross-linkable multi-stimuli responsive hydrogel inks for direct-write 3D printing

Abstract: Triple-stimuli responsive hydrogel can be 3D printed and cross-linked in the presence of a photoradical generator and 365 nm UV light.

Cited by 55 publications

References 59 publications

Advanced Polymer Designs for Direct‐Ink‐Write 3D Printing

Advanced Polymer Designs for Direct‐Ink‐Write 3D Printing

Extrusion 3D Printing of Polymeric Materials with Advanced Properties

A Review on Printing of Responsive Smart and 4D Structures Using 2D Materials

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