Particle size influence on material properties of BaTiO3 ceramics fabricated using freeze-form extrusion 3D printing

The aim of the study was to prepare indomethacin nanocrystal-loaded, 3D-printed, fast-dissolving oral polymeric film formulations. Nanocrystals were produced by the wet pearl milling technique, and 3D printing was performed by the semi-solid extrusion method. Hydroxypropyl methyl cellulose (HPMC) was the film-forming polymer, and glycerol the plasticizer. In-depth physicochemical characterization was made, including solid-state determination, particle size and size deviation analysis, film appearance evaluation, determination of weight variation, thickness, folding endurance, drug content uniformity, and disintegration time, and drug release testing. In drug nanocrystal studies, three different stabilizers were tested. Poloxamer F68 produced the smallest and most homogeneous particles, with particle size values of 230 nm and PI values below 0.20, and was selected as a stabilizer for the drug-loaded film studies. In printing studies, the polymer concentration was first optimized with drug-free formulations. The best mechanical film properties were achieved for the films with HPMC concentrations of 2.85% (w/w) and 3.5% (w/w), and these two HPMC levels were selected for further drug-loaded film studies. Besides, in the drug-loaded film printing studies, three different drug levels were tested. With the optimum concentration, films were flexible and homogeneous, disintegrated in 1 to 2.5 min, and released the drug in 2–3 min. Drug nanocrystals remained in the nano size range in the polymer films, particle sizes being in all film formulations from 300 to 500 nm. When the 3D-printed polymer films were compared to traditional film-casted polymer films, the physicochemical behavior and pharmaceutical performance of the films were very similar. As a conclusion, 3D printing of drug nanocrystals in oral polymeric film formulations is a very promising option for the production of immediate-release improved- solubility formulations.

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Relationship of Electrical Properties and Partical Size of Piezoelectric Ceramics Fabricated by Digital Light Processing 3D Printing

10.21203/rs.3.rs-1119291/v1 ◽

2021 ◽

Author(s):

Kai Liu ◽

Jiaming Hu ◽

Yusheng Shi ◽

Chenyang Zhou ◽

Yunfei Sun ◽

...

Keyword(s):

Particle Size ◽

Electrical Properties ◽

3D Printing ◽

Piezoelectric Sensor ◽

Piezoelectric Ceramics ◽

Particle Sizes ◽

Digital Light Processing ◽

Relationship Of ◽

Partical Size ◽

Functional Ceramics

Abstract To improve electrical properties of BaTiO3 piezoelectric ceramics fabricated by 3D printing, effects of particle sizes was investigated on rheological and curing properties of ceramic slurries, electrical properties of BaTiO3 fabricated by Digital Light Processing 3D printing method. It was found that the curing ability of ceramic slurries decreased first and then increased with the increase of particle size from 136 nm to 1486 nm, while the viscosity of the slurries kept decreasing. When the particle size in a range of submicron, the grain size of sintered ceramics decreased from 13.27 μm to 6.84 μm as particle size increasing. Immediately, the relative density, piezoelectric constant, relative permittivity and remanent polarization of sintered ceramics were measured and it turns out to reach 95.32%, 161.4 pC/N, 1512 and 7.59 uC/cm2 respectively while using the BaTiO3 powder with particle sizes of 993 nm. Finally, a cellular structural BaTiO3 ceramics was fabricated by using optimized powder and process parameters and packaged as a piezoelectric sensor, showing a good function of force-electricity conversion. These results demonstrated the feasibility of fabricating high-quality functional ceramics with designed geometry by Digital Light Processing.

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3D Printed Chromophoric Sensors

Chemosensors ◽

10.3390/chemosensors9110317 ◽

2021 ◽

Vol 9 (11) ◽

pp. 317

Author(s):

Zachary Brounstein ◽

Jarrod Ronquillo ◽

Andrea Labouriau

Keyword(s):

Thermal Stability ◽

3D Printing ◽

Material Properties ◽

Chemical Structure ◽

Elevated Temperatures ◽

Advanced Manufacturing ◽

Color Changes ◽

Printed Sensors ◽

3D Printed ◽

Manufacturing Techniques

Eight chromophoric indicators are incorporated into Sylgard 184 to develop sensors that are fabricated either by traditional methods such as casting or by more advanced manufacturing techniques such as 3D printing. The sensors exhibit specific color changes when exposed to acidic species, basic species, or elevated temperatures. Additionally, material properties are investigated to assess the chemical structure, Shore A Hardness, and thermal stability. Comparisons between the casted and 3D printed sensors show that the sensing devices fabricated with the advanced manufacturing technique are more efficient because the color changes are more easily detected.

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Microstructural Control of Polymers Achieved Using Controlled Phase Separation During 3D Printing with Oligomer Libraries: Dictating Drug Release for Personalized Subdermal Implants

10.26434/chemrxiv.12440015.v1 ◽

2020 ◽

Author(s):

Laura Ruiz-Cantu ◽

Gustavo Trindade ◽

Vincenzo Taresco ◽

Zuoxin Zhou ◽

Laurence Burroughs ◽

...

Keyword(s):

Phase Separation ◽

3D Printing ◽

Drug Release ◽

Material Properties ◽

High Throughput Screening ◽

Ink Jet ◽

Versatile Tool ◽

3D Printed ◽

Subdermal Implants ◽

Level Of Understanding

<p>Controlling the microstructure of materials by means of phase separation is a versatile tool for optimizing material properties. In this study, we show that ink jet 3D printing of polymer blends gives rise to controllable phase separation that can be used to tailor the release of drugs. We predicted phase separation using high throughput screening combined with a model based on the Flory-Huggins interaction parameter, and were able to show that drug release from 3D printed structures can be predicted from observations based on single drops of mixtures. This new understanding gives us hierarchical compositional control, from droplet to device, allowing release to be ‘dialed up’ without any manipulation of geometry. This is an important advance for implants that need to be delivered by cannula, where the shape is highly constrained and thus the usual geometrical freedoms associated with 3D printing cannot be exploited, bringing a hitherto unseen level of understanding to emergent material properties of 3D printing.</p>

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3D Printing of Okara Ink: The Effect of Particle Size on the Printability

ACS Food Science & Technology ◽

10.1021/acsfoodscitech.1c00236 ◽

2021 ◽

Author(s):

Cheng Pau Lee ◽

Masaki Takahashi ◽

Satoshi Arai ◽

Chi-Lik Ken Lee ◽

Michinao Hashimoto

Keyword(s):

Particle Size ◽

3D Printing ◽

Effect Of Particle Size

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Investigation of the Influence of Fillers of Various Nature on the Properties of Polyether Sulfone and Determination of the Possibility of Using Composites on their Basis in 3D-Printing

Materials Science Forum ◽

10.4028/www.scientific.net/msf.935.11 ◽

2018 ◽

Vol 935 ◽

pp. 11-14

Author(s):

Azamat L. Slonov ◽

Azamat A. Zhansitov ◽

Ismel V. Musov ◽

Elina V. Khakyasheva ◽

L.Kh. Kuchmenova ◽

...

Keyword(s):

Mechanical Properties ◽

Particle Size ◽

3D Printing ◽

Carbon Fibers ◽

Polymer Matrix ◽

Polyether Sulfone ◽

Printing Method

The results of the studies of the effect of excipients of mineral and organic origin on the mechanical properties of polyether sulfone based on 4,4'-dihydroxydiphenyl and 4,4'-dichlordiphenylsulfone are adduced. It has been shown that the introduction of hard fillers is accompanied by the increased modulus and reduced ductility of the polymer matrix, the intensity of these effects depends on the concentration, shape and particle size additives. It was revealed that the composites with talc and discrete carbon fibers were characterized by higher mechanical properties. Their test as materials for FDM 3D printing method shows the highest suitability composites with talc for this technology.

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Influence of Rubber Particle Size on Functional Properties of a Composite Material Based on Scrap Tires and a Polymer Binder

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.850.107 ◽

2020 ◽

Vol 850 ◽

pp. 107-111

Author(s):

Laimonis Mālers ◽

Agnija Cirvele

Keyword(s):

Particle Size ◽

Composite Material ◽

Functional Properties ◽

Material Properties ◽

Rubber Particle ◽

Polymer Binder ◽

Scrap Tires ◽

Elongation At Break ◽

Rubber Particles ◽

Purposeful Selection

Functional properties of composite material based on mechanically grinded scrap tires with different particle size of fractioned crumb and polyurethane type polymer binder were investigated to estimate influence of rubber particles size and content on composite material properties (Shore C hardness, compressive stress at 10 % deformation, tensile strength, elastic modulus and elongation at break, apparent density). Optimization possibilities of composite material consisting of rubber particles with different sizes or fractions were investigated. The obtained results show that variation of composition of the composite material by changing size of rubber granulate have definite influence on selected properties of the material. Purposeful selection and mutual combination of rubber particles size included in material can ensure desirable and predictable mechanical properties of composite material.

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Effect of the particle size and the debinding process on the density of alumina ceramics fabricated by 3D printing based on stereolithography

Ceramics International ◽

10.1016/j.ceramint.2016.08.024 ◽

2016 ◽

Vol 42 (15) ◽

pp. 17290-17294 ◽

Cited By ~ 62

Author(s):

Haidong Wu ◽

Yanling Cheng ◽

Wei Liu ◽

Rongxuan He ◽

Maopeng Zhou ◽

...

Keyword(s):

Particle Size ◽

3D Printing ◽

Alumina Ceramics ◽

Debinding Process

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Exploring the Multi-Stage Effects of Material Preparation and Printing on 3D Printing Product Quality

Volume 1: Additive Manufacturing; Manufacturing Equipment and Systems; Bio and Sustainable Manufacturing ◽

10.1115/msec2019-2788 ◽

2019 ◽

Author(s):

Sahand Hajifar ◽

Ramanarayanan Purnanandam ◽

Hongyue Sun ◽

Chi Zhou

Keyword(s):

3D Printing ◽

Material Properties ◽

Good Property ◽

Metal Powders ◽

Promising Technique ◽

Printing Process ◽

Multi Stage ◽

Flexible Parts ◽

Printing Processes ◽

Material Preparation

Abstract 3D printing is a promising technique to fabricate flexible parts and reduce the supply chain. Various materials, such as metal powders, plastics, ultraviolet (UV) sensitive resins, can be fabricated from 3D printing and form the final printed part. Currently, most researchers either focus on exploring printable materials with good property or focus on the process quality control given a certain type of material. However, for many 3D printing processes, the printing process and product properties are dependent on both the material properties and process settings. To the best of the authors’ knowledge, the quantitative analysis of the interactions of material properties and printing process settings are rarely studied. In this paper, we treat the material preparation and 3D printing as different manufacturing stages, and we explore the multi-stage effects in 3D printing. In particular, we add carbon fiber to the CLEAR resin to alter the material properties for a stereolithography (SLA) 3D printing process. It is observed that the part properties are jointly affected by material properties and printing process settings. Therefore, the material property and process settings should be jointly considered for optimizing 3D printing processes.

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Material Extrusion Additive Manufacturing of Wood and Lignocellulosic Filled Composites

Polymers ◽

10.3390/polym12092115 ◽

2020 ◽

Vol 12 (9) ◽

pp. 2115

Author(s):

Meghan E. Lamm ◽

Lu Wang ◽

Vidya Kishore ◽

Halil Tekinalp ◽

Vlastimil Kunc ◽

...

Keyword(s):

Additive Manufacturing ◽

3D Printing ◽

Present State ◽

Material Properties ◽

Large Scale ◽

State Of The Art ◽

Material Extrusion ◽

Functional Additives ◽

Natural Filler ◽

Natural Fillers

Wood and lignocellulosic-based material components are explored in this review as functional additives and reinforcements in composites for extrusion-based additive manufacturing (AM) or 3D printing. The motivation for using these sustainable alternatives in 3D printing includes enhancing material properties of the resulting printed parts, while providing a green alternative to carbon or glass filled polymer matrices, all at reduced material costs. Previous review articles on this topic have focused only on introducing the use of natural fillers with material extrusion AM and discussion of their subsequent material properties. This review not only discusses the present state of materials extrusion AM using natural filler-based composites but will also fill in the knowledge gap regarding state-of-the-art applications of these materials. Emphasis will also be placed on addressing the challenges associated with 3D printing using these materials, including use with large-scale manufacturing, while providing insight to overcome these issues in the future.

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