Additive manufacturing: modular platform for 3D printing fluid-containing monoliths

Cipriani, Ciera E.; Starvaggi, Nicholas; Edgehouse, Katelynn J.; Price, Jordan B.; Vivod, Stephanie L.; Pentzer, Emily

doi:10.1039/d2me00102k

Cited by 7 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The DIW-printability of this ink was confirmed by its rheological behavior, specifically that it is shear-thinning and thixotropic . Inks suitable for DIW should have the ability to be easily extruded from the print nozzle, then undergo a rapid restoration of original viscosity, and maintain its shape after curing Figure A shows that the average viscosity of the MNH-P ink decreased as the applied shear rate is increased from 0.0001 to 1000 s –1 , thus exhibiting non-Newtonian, shear-thinning behavior.…”

Section: Resultsmentioning

confidence: 98%

“… 38 Inks suitable for DIW should have the ability to be easily extruded from the print nozzle, then undergo a rapid restoration of original viscosity, and maintain its shape after curing. 45 Figure 2 A shows that the average viscosity of the MNH-P ink decreased as the applied shear rate is increased from 0.0001 to 1000 s –1 , thus exhibiting non-Newtonian, shear-thinning behavior. The PMMA solution itself was a Newtonian fluid (with viscosity independent of shear rate).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Printing Composites with Salt Hydrate Phase Change Materials for Thermal Energy Storage

Lak

Hsieh

Al-Mahbobi

et al. 2023

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

Salt hydrate phase change materials are important in advancing thermal energy storage technologies for the development of renewable energies. At present, their widespread use is limited by undesired undercooling and phase separation, as well as their tendency to corrode container materials. Herein, we report a direct ink writing (DIW) additive manufacturing technique to print noncorrosive salt hydrate composites with thoroughly integrated nucleating agents and thermally conductive additives. First, salt hydrate particles are prepared from nonaqueous Pickering emulsions and then employed as rheological modifiers to formulate thixotropic inks with polymer dispersions in toluene serving as the matrix. These inks are successfully printed at room temperature and cured by solvent evaporation under ambient conditions. The resulting printed and cured composites, containing up to 70 wt % of the salt hydrate, exhibit reliable thermal cyclability for 10 cycles and suppressed undercooling compared to the bulk salt hydrate. Remarkably, the composites consistently maintain their structural integrity and thermal performance throughout the entirety of both the melting and solidification processes. We demonstrate the versatility of this approach by utilizing two salt hydrates, magnesium nitrate hexahydrate (MNH, T m = 89 °C) and zinc nitrate hexahydrate (ZNH, T m = 36 °C), to achieve desired thermal characteristics across a wide range of temperatures. Further, we establish that the incorporation of carbon black in these inks enhances the thermal conductivity by at least 33%. This approach consolidates the strengths of additive manufacturing and salt hydrate phase change materials to harness customizable thermal properties, well suited for targeted thermal energy management applications.

show abstract

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Printing Composites with Salt Hydrate Phase Change Materials for Thermal Energy Storage

Lak

Hsieh

Al-Mahbobi

et al. 2023

ACS Appl. Eng. Mater.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Further, responsive capsules can provide dual transport and transformation roles, where liquid-filled capsules are prepared and stable to storage until they need to be used as a feedstock to produce, e.g., a different architecture. Such capsules would be especially attractive for additive manufacturing 70 to produce freestanding structures tailored to specific applications. For example, transformation of capsules to a fluid channel-containing monolithic structures could provide suitable composition and surface area required, e.g., for gas uptake, separations, or irradiation shielding (e.g., electromagnetic interference (EMI) shielding).…”

Section: Discussionmentioning

confidence: 99%

“…, a different architecture. Such capsules would be especially attractive for additive manufacturing 70 to produce freestanding structures tailored to specific applications. For example, transformation of capsules to a fluid channel-containing monolithic structures could provide suitable composition and surface area required, e.g.…”

Section: Discussionmentioning

confidence: 99%

Capsules with responsive polymeric shells for applications beyond drug delivery

Wang,

Starvaggi,

Pentzer

2023

Polym. Chem.

View full text Add to dashboard Cite

show abstract

“…Reprogramming lets aerogels seamlessly adapt to new environments, which provides them with a new purpose and prevents their disposal. Various methodologies including chemical modifications [18] and additive engineering [19,20] have been explored to alter properties of aerogels during their development stage. However, a more direct and sustainable approach involves changing material properties after their synthesis, which eliminates the need for redundant batches.…”

Section: Introductionmentioning

confidence: 99%

Aerogel‐To‐Sol‐To‐Aerogel (ASA) Process for Recycling, Repairing, Reprogramming of High‐Performance Organic Aerogels

Wang,

Eisenreich,

Tomović

2024

Adv Funct Materials

View full text Add to dashboard Cite

With rising energy demands and costs, the significance of thermally insulating materials is on a constant upward trajectory. While they offer impressive performance, their sustainability is increasingly becoming an essential design feature. The study thus develops an unprecedented strategy that enables recycling, repairing, and reprogramming of superinsulating polyimine aerogels. The principle at play involves the decomposition of polyimine aerogels into a solution of oligomers through transimination reactions with additional amines. This solution can be utilized to create new aerogels with virtually identical properties to the original ones. This aerogel‐to‐sol‐to‐aerogel (ASA) process is also applicable to mixed waste streams and damaged aerogels. Moreover, this method allows to alter the aerogel properties post‐synthetically through careful selection of amines. Since the ASA process is highly reproducible and selective, omits purification steps, and conserves 100% of the initially embedded chemical resources, it presents an innovative tool for the sustainable management of superinsulating aerogels.

show abstract

Additive manufacturing: modular platform for 3D printing fluid-containing monoliths

Abstract: Fluid-filled capsules and liquidous polymers are combined to produce 3D printable inks, enabling printing of fluid-containing monoliths with porous and nonporous microstructures.

Cited by 7 publications

References 26 publications

Printing Composites with Salt Hydrate Phase Change Materials for Thermal Energy Storage

Printing Composites with Salt Hydrate Phase Change Materials for Thermal Energy Storage

Capsules with responsive polymeric shells for applications beyond drug delivery

Aerogel‐To‐Sol‐To‐Aerogel (ASA) Process for Recycling, Repairing, Reprogramming of High‐Performance Organic Aerogels

Contact Info

Product

Resources

About