3D printed remendable polylactic acid blends with uniform mechanical strength enabled by a dynamic Diels–Alder reaction

Appuhamillage, Gayan A.; Reagan, John C.; Khorsandi, Sina; Davidson, Joshua R.; Voit, Walter; Smaldone, Ronald A.

doi:10.1039/c7py00310b

Cited by 71 publications

(96 citation statements)

References 33 publications

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“…) via direct‐write printing . Direct‐write printing is a cheap and versatile layer‐by‐layer fabrication method similar to fused filament fabrication . Initially, we printed thin sheets consisting of single layers of gel deposition (Fig.…”

Section: Resultsmentioning

confidence: 99%

A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water

Appuhamillage

Berry

Benjamin

et al. 2019

Polymer International

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Herein, we describe a 3D printable hydrogel that is capable of removing toxic metal pollutants from aqueous solution. To achieve this, shear‐thinning hydrogels were prepared by blending chitosan with diacrylated Pluronic F‐127 which allows for UV curing after printing. Several hydrogel compositions were tested for their ability to absorb common metal pollutants such as lead, copper, cadmium and mercury, as well as for their printability. These hydrogels displayed excellent metal adsorption with some examples capable of up to 95% metal removal within 30 min. We show that 3D printed hydrogel structures that would be difficult to fabricate by conventional manufacturing methods can adsorb metal ions significantly faster than solid objects, owing to their higher accessible surface areas. © 2019 Society of Chemical Industry

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Section: Resultsmentioning

confidence: 99%

A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water

Appuhamillage

Berry

Benjamin

et al. 2019

Polymer International

Self Cite

View full text Add to dashboard Cite

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“…Additive manufacturing techniques, often referred to as three‐dimensional (3D) printing, are changing the landscape of polymer chemistry, materials science, and engineering as a result of their ability to rapidly convert advanced digital designs into complex 3D architectures. To date, several 3D printing techniques including extrusion‐based fused depositional modeling (FDM), stereolithography, and laser‐assisted sintering have been successfully commercialized. These 3D printers use polymeric materials, such as thermoplastic filaments, photocurable resins, and polymer powders to rapidly prototype 3D objects for industrial and educational applications .…”

Section: Introductionmentioning

confidence: 99%

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

Lin

Tang

et al. 2019

Chemistry A European J

185

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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“…Second, some functional properties, such as optics or conductivity properties, can also evolve with the process of shape changing for functional 4D printing . Third, the time‐dependent functional properties, such as tissue maturation, degradability, self‐healing, or color shifting for 3D printed constructs, can be broadly termed as 4D printing. In this section, we briefly review some progress in 4D bioprinting and 3D printing of self‐healing materials as a new progress in 4D printing of multifunctional materials.…”

Section: D Printing Of Multifunctional Materialsmentioning

confidence: 99%

Section: D Printing Of Multifunctional Materialsmentioning

confidence: 99%

“…As shown in Figure c, the DA thermosets could be de‐cross‐linked and melt processed during printing at elevated temperature (>90 °C), and re‐cross‐linked at lower temperatures to their entropically favored state . Appuhamillage et al blended a DA polymer with commercially available PLA to achieve remarkably improved mechanical properties by using the reversible DA reaction to improve the interfacial bonding properties after printing. Shi et al exploited the solvent‐assisted transesterification‐type exchange reaction to achieve recycling and self‐healing 3D printing of a vitrimer epoxy.…”

Section: D Printing Of Multifunctional Materialsmentioning

confidence: 99%

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Advances in 4D Printing: Materials and Applications

Xiao

Roach

et al. 2018

Adv Funct Materials

700

436

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4D printing has attracted tremendous interest since its first conceptualization in 2013. 4D printing derived from the fast growth and interdisciplinary research of smart materials, 3D printer, and design. Compared with the static objects created by 3D printing, 4D printing allows a 3D printed structure to change its configuration or function with time in response to external stimuli such as temperature, light, water, etc., which makes 3D printing alive. Herein, the material systems used in 4D printing are reviewed, with emphasis on mechanisms and potential applications. After a brief overview of the definition, history, and basic elements of 4D printing, the state‐of‐the‐art advances in 4D printing for shape‐shifting materials are reviewed in detail. Both single material and multiple materials using different mechanisms for shape changing are summarized. In addition, 4D printing of multifunctional materials, such as 4D bioprinting, is briefly introduced. Finally, the trend of 4D printing and the perspectives for this exciting new field are highlighted.

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3D printed remendable polylactic acid blends with uniform mechanical strength enabled by a dynamic Diels–Alder reaction

Abstract: We demonstrate that uniform mechanical properties can be achieved in 3D printed polymer blends by using a dynamic Diels–Alder reaction.

Cited by 71 publications

References 33 publications

A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water

A biopolymer‐based 3D printable hydrogel for toxic metal adsorption from water

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

Advances in 4D Printing: Materials and Applications

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