Porous polymeric materials by 3D printing of photocurable resin

Mu, Xiaoming; Bertron, T.; Dunn, Conner K.; Qiao, Haipeng; Wu, Jiangtao; Zhao, Zeang; Saldaña, Christopher; Hu, Qi

doi:10.1039/c7mh00084g

Cited by 120 publications

(79 citation statements)

References 35 publications

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“…In the latter case, however, there was limited control over the bubble size and distribution within each strut, since those lattices were produced via direct foam writing . Integrating additive manufacturing with liquid or solid templating enables the fabrication of hierarchical architectures, but simultaneously optimizing the precision, flexibility, and throughput of these multi‐step processes is prohibitively challenging. Therefore, new methods are needed that enable foam architectures to be systematically patterned across multiple scales within a single construct, since even simple functionally graded materials may offer major benefits for applications ranging from impact absorbers to microfilters …”

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confidence: 99%

Architected Polymer Foams via Direct Bubble Writing

et al. 2019

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Polymer foams are cellular solids composed of solid and gas phases, whose mechanical, thermal, and acoustic properties are determined by the composition, volume fraction, and connectivity of both phases. A new high‐throughput additive manufacturing method, referred to as direct bubble writing, for creating polymer foams with locally programmed bubble size, volume fraction, and connectivity is reported. Direct bubble writing relies on rapid generation and patterning of liquid shell–gas core droplets produced using a core–shell nozzle. The printed polymer foams are able to retain their overall shape, since the outer shell of these bubble droplets consist of a low‐viscosity monomer that is rapidly polymerized during the printing process. The transition between open‐ and closed‐cell foams is independently controlled by the gas used, while the foam can be tailored on‐the‐fly by adjusting the gas pressure used to produce the bubble droplets. As exemplars, homogeneous and graded polymer foams in several motifs, including 3D lattices, shells, and out‐of‐plane pillars are fabricated. Conductive composite foams with controlled stiffness for use as soft pressure sensors are also produced.

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confidence: 99%

Architected Polymer Foams via Direct Bubble Writing

et al. 2019

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“…This work suggests the potential uses of highly conductive PU composites for DLP-type 3D printing.Polymers 2020, 12, 67 2 of 11 prepolymers [4]. Among acrylic resins, poly(ethylene glycol) diacrylate (PEGDA) has been the most widely used material for DLP-type 3D printing [6,7]. Zarek et al reported the DLP-type 3D printing of polycaprolactone (PCL) for use as a shape memory device [8].In particular, various advantages of PU have attracted a great deal of interest in its application to DLP-type 3D printing [11,12].…”

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confidence: 99%

“…Polymers 2020, 12, 67 2 of 11 prepolymers [4]. Among acrylic resins, poly(ethylene glycol) diacrylate (PEGDA) has been the most widely used material for DLP-type 3D printing [6,7]. Zarek et al reported the DLP-type 3D printing of polycaprolactone (PCL) for use as a shape memory device [8].…”

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Comparative Studies on Polyurethane Composites Filled with Polyaniline and Graphene for DLP-Type 3D Printing

Joo

Cho

2020

Polymers

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Digital light processing (DLP)-type 3D printing ensures several advantages, such as an easy solution process, a short printing time, high-quality printing, and selective light curing. Furthermore, polyurethane (PU) is among the promising candidates for 3D printing because of its wide range of applications. This work reports comparative studies on the fabrication and optimization of PU composites using a polyaniline (PANI) nanomaterial and a graphene sheet (GS) for DLP-type 3D printing. The morphologies and dispersion of the printed PU composites were studied by field emission scanning electron microscope (FE-SEM) images. Bonding structures in the PU composites were investigated by Fourier-transform infrared (FT-IR) spectroscopy. As-prepared PU/PANI and PU/GS composites with different filler contents were successfully printed into sculptures with different sizes and shapes. The PU/PANI and PU/GS composites exhibit the improved sheet resistance, which is up to 8.57 × 104 times (1.19 × 106 ohm/sq) lower and 1.27 × 105 times (8.05 × 105 ohm/sq) lower, respectively, than the pristine PU (1.02 × 1011 ohm/sq). Moreover, the PU/PANI and PU/GS composites demonstrate 1.41 times (44.5 MPa) higher and 2.19 times (69.3 MPa) higher tensile strengths compared with the pristine PU (31.6 MPa). This work suggests the potential uses of highly conductive PU composites for DLP-type 3D printing.

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“…Durch Wegätzen des Polymertemplats wurden die ultraleichten Metallschwämme mit komplexen Strukturen erhalten . Einige der Methoden zur Bildung von Schwämmen, insbesondere Auswaschungstechniken, können mit dem 3D‐Drucken kombiniert werden, um komplexe, poröse Zellstrukturen herzustellen …”

Section: Methoden Zur Herstellung Makroporöser Schwämmeunclassified

Offenzellige Schwämme mit niedrigen Dichten als Funktionsmaterialien

2017

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Makroporöse Schwämme sind eine Chance und Herausforderung für die Chemie und Materialwissenschaften. Die Herausforderung liegt in der Herstellung der Schwämme, die bestimmte Eigenschaftskombinationen aufweisen und zu neuen Anwendungen führen. Kennzeichnend für derartige Schwämme sind geringes Gewicht, Atmungsaktivität, spezielle Benetzungseigenschaften, großer Massentransfer, mechanische Stabilität und große Porenvolumina. Bottom‐up‐ und Top‐down‐Methoden zur Herstellung von Schwämmen aus Kohlenstoff und Polymeren sowie ausgewählte Eigenschaften und mögliche Anwendungen werden in diesem Aufsatz diskutiert.

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Porous polymeric materials by 3D printing of photocurable resin

Abstract: A method for 3D printing of complicated structures using a photopolymer with high porosity was developed.

Cited by 120 publications

References 35 publications

Architected Polymer Foams via Direct Bubble Writing

Architected Polymer Foams via Direct Bubble Writing

Comparative Studies on Polyurethane Composites Filled with Polyaniline and Graphene for DLP-Type 3D Printing

Offenzellige Schwämme mit niedrigen Dichten als Funktionsmaterialien

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