Bioinspired microvascular networks for multifunctional composites

Jason F. Patrick, Brett P. Krull, Mayank Garg, Jeffrey S Moore, Nancy R Sottos, Scott R. White

Research output: Contribution to conferencePaper

Abstract

In biological systems, fluid transport through internal vasculature enables a plurality of metabolic and homeostatic functions including respiration, circulation, thermal regulation, and self-repair. Natural, load-bearing materials such as bone and wood rely on nutrient exchange through a series of complex networks to achieve mechanical stasis via cellular proliferation (growth) and tissue regeneration. While synthetic fiber-reinforced composites (FRC) attain comparable specific strength/stiffness properties to these living hierarchical materials, the ability to sustain structural performance over a wide range of environmental conditions and engineering applications has yet to be accomplished. One promising pathway for accession of multifunctionality in man-made FRC is to mimic successful, evolutionary-derived vascular constructions. Here we show advancements for a recently developed technique [1-3] designated vaporization of sacrificial components (VaSC), where inverse replica microvasculature is created within fiber-composites through thermal depolymerization of a sacrificial precursor. Metal catalyst micro-particles are incorporated into a commodity biopolymer, poly(lactic) acid (PLA), and extruded into printable filament for an additive manufacturing process known as fused deposition modeling (FDM). The sacrificial printing technique is both economical and scalable using commercially available materials, processes, and equipment. By expanding the VaSC procedure beyond one-dimensional (1D) segregated channels, to three-dimensional (3D) interconnected networks closer resembling biological vasculature, the range of dynamic functionalities for fiber-composites is increased. In addition to providing enhanced multifunctional properties, 3D printed networks also possess damage-tolerant features found in natural vasculatures [4].

Original languageEnglish (US)
StatePublished - Jan 1 2015
Event20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark
Duration: Jul 19 2015Jul 24 2015

Other

Other20th International Conference on Composite Materials, ICCM 2015
CountryDenmark
CityCopenhagen
Period7/19/157/24/15

Fingerprint

Composite materials
Vaporization
Fibers
Bearings (structural)
3D printers
Tissue regeneration
Depolymerization
Biopolymers
Synthetic fibers
Complex networks
Biological systems
Lactic acid
Nutrients
Printing
Wood
Bone
Repair
Metals
Stiffness
Catalysts

Keywords

  • Bioinspired
  • Fiber-reinforced composite
  • Microvascular
  • Multifunctional

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites

Cite this

Patrick, J. F., Krull, B. P., Garg, M., Moore, J. S., Sottos, N. R., & White, S. R. (2015). Bioinspired microvascular networks for multifunctional composites. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.

Bioinspired microvascular networks for multifunctional composites. / Patrick, Jason F.; Krull, Brett P.; Garg, Mayank; Moore, Jeffrey S; Sottos, Nancy R; White, Scott R.

2015. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.

Research output: Contribution to conferencePaper

Patrick, JF, Krull, BP, Garg, M, Moore, JS, Sottos, NR & White, SR 2015, 'Bioinspired microvascular networks for multifunctional composites' Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark, 7/19/15 - 7/24/15, .
Patrick JF, Krull BP, Garg M, Moore JS, Sottos NR, White SR. Bioinspired microvascular networks for multifunctional composites. 2015. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.
Patrick, Jason F. ; Krull, Brett P. ; Garg, Mayank ; Moore, Jeffrey S ; Sottos, Nancy R ; White, Scott R. / Bioinspired microvascular networks for multifunctional composites. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.
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