Characterization of polyurethane shape memory polymer processed by material extrusion additive manufacturing

Raasch, Jonathan; Ivey, M.; Aldrich, Daniel R.; Nobes, David S.; Ayranci, Cagri

doi:10.1016/j.addma.2015.09.004

Cited by 70 publications

(64 citation statements)

References 16 publications

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“…These materials can be fabricated using pre‐established techniques while having novel characteristics for specific applications. Traditional methods such as gas blowing or particulate leaching have been successful in scaffold fabrication, however, newer techniques such as extrusion molding and 3‐D printing may lead the future of porous stimuli–responsive materials …”

Section: Discussionmentioning

confidence: 99%

Porous shape memory polymers: Design and applications

Hasan

Nash

Maitland

2016

J Polym Sci B Polym Phys

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Porous shape memory polymers (SMPs) exhibit geometric and volumetric shape change when actuated by an external stimulus and can be fabricated as foams, scaffolds, meshes, and other polymeric substrates that possess porous three-dimensional macrostructures. These materials have applications in multiple industries such as textiles, biomedical devices, tissue engineering, and aerospace. This review article examines recent developments in porous SMPs, with a focus on fabrication methods, methods of characterization, modes of actuation, and applications.

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Section: Discussionmentioning

confidence: 99%

Porous shape memory polymers: Design and applications

Hasan

Nash

Maitland

2016

J Polym Sci B Polym Phys

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“…Even though many new approaches have been developed, only a few new materials – e.g., in ref . for melt extrusion manufacturing or in ref . for FFF – and parameters besides the nozzle temperature and deposition strategy – as reviewed, e.g., in ref ,.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Poly(propylene) by Means of Melt Extrusion

Hertle

Drexler

Drummer

2016

Macro Materials & Eng

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Additive manufacturing (AM) processes can provide great input for solving recently encountered challenges of the global market such as mass customization, highly dynamic environments, and the decrease of time needed from a draft to final products. This study aims at contributing to the issue of material limitations typically present in AM by researching possibilities of directly using technically relevant and commercially available polymer granules in melt extrusion processes. In order to extend the knowledge on the processing of semicrystalline polymers in melt extrusion based processes, different temperature induced influences on mechanical and morphological properties are investigated for poly(propylene). Mechanical tests are conducted to evaluate the effects and interdependencies of substrate, extrusion, and cooling temperature. Finally, based on the identified mechanical and rheological behavior of the material, a process window for the used materials is suggested.

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“…Once a layer is built, the platform lowered, and the next layer is deposited. The most commonly used polymers for AM are acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) …”

Section: Introductionmentioning

confidence: 99%

Enhancing the mechanical performance of additive manufactured polymer components using atmospheric plasma pre‐treatments

Abourayana

Dobbyn

Dowling

2017

Plasma Processes & Polymers

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This study evaluates the use of a barrel atmospheric plasma system for the treatment of acrylonitrile butadiene styrene and polylactic acid polymer particles. Treatments were carried out in a helium discharge with either oxygen or nitrogen addition. The plasma activated polymer particles were then used to prepare filaments, which in‐turn were then used to fabricated parts by additive manufacturing. The resultant dog bone polymer parts exhibited up to a 22% increase in tensile strength, compared to parts fabricated using unactivated polymer particles. The explanation for the increased mechanical strength is the enhanced activation of the treated polymer particles, as well as the removal of contaminations from the polymer surface.

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Characterization of polyurethane shape memory polymer processed by material extrusion additive manufacturing

Cited by 70 publications

References 16 publications

Porous shape memory polymers: Design and applications

Porous shape memory polymers: Design and applications

Additive Manufacturing of Poly(propylene) by Means of Melt Extrusion

Enhancing the mechanical performance of additive manufactured polymer components using atmospheric plasma pre‐treatments

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