Liquid-Based 4D Printing of Shape Memory Nanocomposites: A Review

Alsaadi, Mohamad; Hinchy, Eoin P.; McCarthy, Conor T.; Moritz, Vicente F.; Zhuo, Shuo; Fuenmayor, Evert; Devine, Declan M.

doi:10.3390/jmmp7010035

Cited by 16 publications

(10 citation statements)

References 258 publications

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“…Poor dispersibility and particle aggregations results in low interfacial adhesion, creating stress concentration defects and lower mechanical properties 30,31 . The accumulation of filler particles in the polymer matrix due to intermolecular forces can also lead to stress concentration points that reduce the fracture elongation.…”

Section: Resultsmentioning

confidence: 99%

“…Poor dispersibility and particle aggregations results in low interfacial adhesion, creating stress concentration defects and lower mechanical properties. 30,31 The accumulation of filler particles in the polymer matrix due to intermolecular forces can also lead to stress concentration points that reduce the fracture elongation. Hence, the favorable filler-matrix interactions that result from the proper distribution of 2.5 wt% S-PUFA in the polymer matrix contributes to the improvement of the flexural modulus, indicating successful chemical modification of the filler to increase compatibility with the acrylate matrix.…”

Section: Flexural Testmentioning

confidence: 99%

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High‐resolution 3D printing resin reinforced by polyurethane filler particles; physical and mechanical properties

Ramezanpour,

Pourabbas

2023

Polymer Composites

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In 3D printing technology, unwanted resin properties such as low mechanical, thermal, electrical, and biocompatibility can be enhanced by using proper fillers. In this study, sucrose urethane microparticles, acrylic modified are used to improve the properties of the final object without losing other properties such as printing resolution. Modification is confirmed by FTIR spectroscopy and hydrogen bonding index enhancement after modification of the urethane filler. Filler particles are reduced in sizes by modification followed by ball‐milling as is confirmed by scanning electron microscopy. When the filler content is 2.5 wt%, mechanical tensile and flexural modulus increase compared to the neat resin however, increases the brittleness of the photo‐cured samples. Thermal degradation temperature is lifted up for 2.5–5.0 wt% of the filler loading in the resin. Improved dimensional accuracy and detailed printing in higher resolution, due to the physical effect of the filler particles, can also be achieved in real 3D‐printed object as is explored.Highlights High‐resolution 3D printing, by random geometry of filler particles in the resin. Scattering from polyurethane foam microparticles lead to high‐resolution printing. Acrylate‐modified polyurethane filler particles provide resin compatibility. Polyurethane filler leads to higher resolution with enhanced mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Section: Flexural Testmentioning

confidence: 99%

High‐resolution 3D printing resin reinforced by polyurethane filler particles; physical and mechanical properties

Ramezanpour,

Pourabbas

2023

Polymer Composites

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“…With the increasing demand for manufacturing parts of complex geometries, additive manufacturing has gained more and more popularity for both rapid prototyping and large scale productions. Direct ink writing (DIW), also known as robocasting, is one of the popular methods of additive manufacturing due to its low cost and high versatility [8]. DIW utilizes a slurry-like precursor to be printed layer-by-layer.…”

Section: Introductionmentioning

confidence: 99%

“…The resulting fiber orientation is determined by the printing speed, nozzle diameter, and more importantly ink rheology characteristics [10]. The design of ink presents a challenging multi-objective optimization problem where the ink exhibit good homogeneity, low shrinkage, high shape fidelity, good structural stability etc [8,11].…”

Section: Introductionmentioning

confidence: 99%

An ICME framework for short fiber reinforced ceramic matrix composites via direct ink writing

Sun,

Marziale,

Haselhuhn

et al. 2024

Modelling Simul. Mater. Sci. Eng.

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A manufacturing-driven ICME framework is proposed to model short fiber reinforced ceramic matrix composite via direct ink writing. Currently, there lacks efforts to investigate the effects of properties of short fiber reinforced ceramic matrix composites due to fiber alignment variance. A multi-scale modeling approach is presented to use representative volume elements to capture the homogenized mechanical behavior at various fiber aspect ratio and volume ratio. The orthotropic material properties are mapped to model the printing process. A series of tensile tests simulations show that with 20$^\circ$ standard deviation in fiber alignment, the fracture plane has the maximum local tensile stress range at 30 degree printing angle. This local tensile stress variation is shown the minimum at 90 degree When the standard deviation increases from 20 degree to 40 degree, the average tensile strength across the fracture plane decreases by 2%, but the stress variations increase 27.6%.

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“…Among them, the camphorquinone (CQ)/amine pair has proved to be very convenient for the fabrication of films and objects using blue light . The inclusion of plasmon-active metal nanostructures into photopolymerizable formulations enhances the potentiality of the objects fabricated by modern additive manufacturing techniques such as stereolithography (SLA) and digital light processing (DLP), among other resin printing technologies. , Metal, carbon-based, and oxide nanostructures have also been used to confer a variety of properties and adaptive functions (active and responsive) to the fabricated parts in which it is known as 4D printing, i.e., the printing of objects with stimulus-activated response …”

Section: Introductionmentioning

confidence: 99%

Stable Photopolymerizable Resins Modified with Functionalized Silica-Coated Gold Nanostructures for the Fabrication of Optically Clear 3D Objects with Remote Photothermal Activation

Penelas,

Schroeder,

Arenas

et al. 2024

ACS Appl. Polym. Mater.

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A compatibilization strategy, based on the synthesis of methacrylate-functionalized gold core−silica shell nanostructures, was used for the formulation of stable, optically clear, printable, and photothermally responsive methacrylate resins. The rational design of the shell enclosing the metallic core was shown to be crucial to achieve clear products with long-term stability against aggregation, of paramount importance in the design of long shelf life photopolymerizable resins. These modified hybrid resins were used for the fabrication of films and 3D objects using a visible-light photopolymerization approach with a 405 nm laser, the common wavelength used in resin additive manufacturing by optical stereolithography (SLA) and digital light processing (DLP). Functionalization of the core−shell nanoparticles (NP) with methacrylate groups additionally enables the immobilization of plasmonic nanostructures through covalent bonding to the polymer network, which is useful to prevent their leaking and diffusion during the service life cycle of the printed parts. The as-produced, faintly colored polymeric objects showed a significant photothermal effect under visible-light irradiation, with a recorded temperature enhancement of more than 80 °C in 1 min for formulations containing 84 μg of Au/g of resin under a laser power of 700 mW. The heat generated by these NPs was used to remotely and locally activate the shape memory behavior of clear bars printed with a commercial acrylic resin, demonstrating the applicability of these structures for the modification of general purpose resins and monomers. Hence, the proposed strategy shows to be a promising tool for the design of photopolymerizable resins but also for the modification of products already available in the market, with applications in the fabrication of functional objects by 3D photoprinting techniques.

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Liquid-Based 4D Printing of Shape Memory Nanocomposites: A Review

Cited by 16 publications

References 258 publications

High‐resolution 3D printing resin reinforced by polyurethane filler particles; physical and mechanical properties

High‐resolution 3D printing resin reinforced by polyurethane filler particles; physical and mechanical properties

An ICME framework for short fiber reinforced ceramic matrix composites via direct ink writing

Stable Photopolymerizable Resins Modified with Functionalized Silica-Coated Gold Nanostructures for the Fabrication of Optically Clear 3D Objects with Remote Photothermal Activation

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