Effect of Washing Condition on the Fracture Strength, and the Degree of Conversion of 3D Printing Resin

Jang, Woohyung; Kook, Gyeong-Soo; Kang, Jin-Ho; Kim, Yeseul; Yun, Yina; Lee, Seon-Ki; Park, Sang-Won; Lim, Hyun-Pil; Yun, Kwi-Dug; Park, Chan

doi:10.3390/app112411676

Cited by 14 publications

(16 citation statements)

References 29 publications

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“…Jang et al investigated the effect of washing conditions on the flexural strength and conversion degree of objects printed by DLP. [89] No significant difference in surface roughness for the different conditions was observed, whereas a significant difference in conversion degrees was obtained (via FTIR measurements). The authors explained that inefficient washings might result in over-curing during post-treatment while highly washed samples present suspended solid particles that could be responsible for the roughness.…”

Section: Washing Stepsmentioning

confidence: 88%

“…Mechanical tests Microscopy? Main conclusion Scherzer et al [60] There is a temperature Deng et al [67] Rapid Bardelcik et al [88] Influence of wash- Risk of swelling and increase in strain with prolonged washings Jang et al [89] Effect of the washing treatment on the fracture strength and the conversion degree Thermal post-cured leads to better performances Steyrer et al [39] Hot VS room temperature printing of a dimethacrylate DLP N.M UV flood curing for 2 × 300 s at 100% intensity Tg, E, tensile strength DMA The UV post-curing leads to similar properties even if the two materials were not cured at the same temperature concerns the post-treatment of porous and cellular materials of precise architecture: which one should be chosen? Should it be adapted to the density?…”

Section: Mechanical Propertiesmentioning

confidence: 99%

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From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials

et al. 2023

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Photopolymerizable resins are increasingly used to generate complex 3D printed parts through stereo lithography, digital light processing (DLP) and liquid crystal display (LCD) 3D printing. Many challenges relating to the resin chemistry and printing parameters still exist and must be addressed in order to entirely control the properties of parts after printing. This work reviews the current knowledge and describes the potential of DLP/LCD methods for printed acrylate resins, as well as the steps necessary to achieve a better control over the mechanical properties of printed materials. Graphical abstract

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Section: Washing Stepsmentioning

confidence: 88%

Section: Mechanical Propertiesmentioning

confidence: 99%

From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials

et al. 2023

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“…These shapes can assist identification of fabrication quality [27,28] in various conditions that can interact with postprocessing. One method followed protocols recommended by the manufacturer: printed pieces were rinsed with isopropyl alcohol (IPA) [29], dried with air, and UV-cured for 3 min. The improved method included additional steps: printed pieces were placed in IPA and cleaned in an ultrasonic bath for 3 min.…”

Section: Evaluation Of Pre-processing and Post-processingmentioning

confidence: 99%

Low-Cost Resin 3-D Printing for Rapid Prototyping of Microdevices: Opportunities for Supporting Aquatic Germplasm Repositories

Zuchowicz

Belgodere

Liu

et al. 2022

Fishes

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Germplasm repositories can benefit sustainable aquaculture by supporting genetic improvement, assisted reproduction, and management of valuable genetic resources. Lack of reliable quality management tools has impeded repository development in the past several decades. Microfabricated open-hardware devices have emerged as a new approach to assist repository development by providing standardized quality assessment capabilities to enable routine quality control. However, prototyping of microfabricated devices (microdevices) traditionally relies on photolithography techniques that are costly, time intensive, and accessible only through specialized engineering laboratories. Although resin 3-D printing has been introduced into the microfabrication domain, existing publications focus on customized or high-cost (>thousands of USD) printers. The goal of this report was to identify and call attention to the emerging opportunities to support innovation in microfabrication by use of low-cost (<USD 350) resin 3-D printing for rapid prototyping. We demonstrate that low-cost mask-based stereolithography (MSLA) 3-D printers with straightforward modifications can provide fabrication quality that approaches traditional photolithography techniques. For example, reliable feature sizes of 20 µm with dimensional discrepancy of <4% for lateral dimensions and <5% for vertical dimensions were fabricated with a consumer-level MSLA printers. In addition, alterations made to pre-processing, post-processing, and printer configuration steps improved print quality as demonstrated in objects with sharper edges and smoother surfaces. The prototyping time and cost of resin 3-D printing (3 h with USD 0.5/prototype) were considerably lower than those of traditional photolithography (5 d with USD 80/prototype). With the rapid advance of consumer-grade printers, resin 3-D printing can revolutionize rapid prototyping approaches for microdevices in the near future, facilitating participation in interdisciplinary development of innovative hardware to support germplasm repository development for aquatic species.

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“…Some of the recent works focused also on the influence of washing conditions on the mechanical strength of the photopolymerized resin. These mainly included materials for dental treatments [ 33 , 34 ]. Therefore, there is still a need to analyze the effect of post-curing procedures on both the biological and mechanical properties of acrylic photopolymers [ 33 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

“…These mainly included materials for dental treatments [ 33 , 34 ]. Therefore, there is still a need to analyze the effect of post-curing procedures on both the biological and mechanical properties of acrylic photopolymers [ 33 , 35 ]. In earlier studies, we found a strong impact of residual unreacted components, such as monomers and unreacted photoinitiators, on cell viability, which led us to establish a reliable washing procedure [ 36 ].…”

Section: Introductionmentioning

confidence: 99%

Thermal, Mechanical and Biocompatibility Analyses of Photochemically Polymerized PEGDA250 for Photopolymerization-Based Manufacturing Processes

Rekowska¹,

Huling²,

Brietzke³

et al. 2022

Pharmaceutics

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Novel fabrication techniques based on photopolymerization enable the preparation of complex multi-material constructs for biomedical applications. This requires an understanding of the influence of the used reaction components on the properties of the generated copolymers. The identification of fundamental characteristics of these copolymers is necessary to evaluate their potential for biomaterial applications. Additionally, knowledge of the properties of the starting materials enables subsequent tailoring of the biomaterials to meet individual implantation needs. In our study, we have analyzed the biological, chemical, mechanical and thermal properties of photopolymerized poly(ethyleneglycol) diacrylate (PEGDA) and specific copolymers with different photoinitiator (PI) concentrations before and after applying a post treatment washing process. As comonomers, 1,3-butanediol diacrylate, pentaerythritol triacrylate and pentaerythritol tetraacrylate were used. The in vitro studies confirm the biocompatibility of all investigated copolymers. Uniaxial tensile tests show significantly lower tensile strength (82% decrease) and elongation at break (76% decrease) values for washed samples. Altered tensile strength is also observed for different PI concentrations: on average, 6.2 MPa for 1.25% PI and 3.1 MPa for 0.5% PI. The addition of comonomers lowers elongation at break on average by 45%. Moreover, our observations show glass transition temperatures (Tg) ranging from 27 °C to 56 °C, which significantly increase with higher comonomer content. These results confirm the ability to generate biocompatible PEGDA copolymers with specific thermal and mechanical properties. These can be considered as resins for various additive manufacturing-based applications to obtain personalized medical devices, such as drug delivery systems (DDS). Therefore, our study has advanced the understanding of PEGDA multi-materials and will contribute to the future development of tools ensuring safe and effective individual therapy for patients.

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Effect of Washing Condition on the Fracture Strength, and the Degree of Conversion of 3D Printing Resin

Cited by 14 publications

References 29 publications

From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials

From resin formulation and process parameters to the final mechanical properties of 3D printed acrylate materials

Low-Cost Resin 3-D Printing for Rapid Prototyping of Microdevices: Opportunities for Supporting Aquatic Germplasm Repositories

Thermal, Mechanical and Biocompatibility Analyses of Photochemically Polymerized PEGDA250 for Photopolymerization-Based Manufacturing Processes

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