Thermal stability of UV-cured vegetable oil epoxidized acrylate-based polymer system for 3D printing application

Barkāne, Anda; Platnieks, Oskars; Jurinovs, Maksims; Gaidukovs, Sergejs

doi:10.1016/j.polymdegradstab.2020.109347

Cited by 51 publications

(57 citation statements)

References 44 publications

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“…Strong absorption bands of the acrylate group (C=C) at 810 cm −1 and stretching vibrations of the (C=O) group at 1720 cm −1 were observed in the liquid state for all groups. The absorption features of the (CH 2 =CH) vinyl group at 985 cm −1 , (C–O–C) stretching vibration at 1158 cm −1 , (CH 2 =CH–R) scissoring at 1406 cm −1 , and the asymmetric stretching vibrations and deformation of (C–H) in (–CH 2 –) and (–CH 3 ) at 2860–2950 cm −1 were also presented [ 8 ]. The intensity of the absorption feature at 810 cm −1 weakened after the 3D printing process at T 0 , indicating that the C=C bonds gradually converted to saturate single bonds under UV light excitation.…”

Section: Resultsmentioning

confidence: 99%

“…Processes that involve 3D printing have evolved considerably and are well suited to fabricating complex structures directly from a digital design [ 8 ]. Among these, digital light processing (DLP), a liquid-based 3D printing technology, has recently become one of most popular methods used in dental applications due to its high printing resolution, fast production rate, and low costs [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Properties and Biocompatibility of Urethane Acrylate-Based 3D-Printed Denture Base Resin

et al. 2021

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In this study, five urethane acrylates (UAs), namely aliphatic urethane hexa-acrylate (87A), aromatic urethane hexa-acrylate (88A), aliphatic UA (588), aliphatic urethane triacrylate diluted in 15% HDD (594), and high-functional aliphatic UA (5812), were selected to formulate five UA-based photopolymer resins for digital light processing (DLP)-based 3D printing. Each UA (40 wt%) was added and blended homogenously with ethoxylated pentaerythritol tetraacrylate (40 wt%), isobornyl acrylate (12 wt%), diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide (3 wt%), and a pink acrylic (5 wt%). Each UA-based resin specimen was designed using CAD software and fabricated using a DLP 3D printer to specific dimensions. Characteristics, mechanical properties, and cytotoxicity levels of these designed UA-based resins were investigated and compared with a commercial 3D printing denture base acrylic resin (BB base) control group at different UV exposure times. Shore hardness-measurement data and MTT assays were analyzed using a one-way analysis of variance with Bonferroni’s post hoc test, whereas viscosity, maximum strength, and modulus were analyzed using the Kruskal–Wallis test (α = 0.05). UA-based photopolymer resins with tunable mechanical properties were successfully prepared by replacing the UA materials and the UV exposure times. After 15 min of UV exposure, the 5812 and 594 groups exhibited higher viscosities, whereas the 88A and 87A groups exhibited lower viscosities compared with the BB base group. Maximum flexural strength, flexural modulus, and Shore hardness values also revealed significant differences among materials (p < 0.001). Based on MTT assay results, the UA-based photopolymer resins were nontoxic. In the present study, mechanical properties of the designed photopolymer resins could be adjusted by changing the UA or UV exposure time, suggesting that aliphatic urethane acrylate has good potential for use in the design of printable resins for DLP-type 3D printing in dental applications.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Properties and Biocompatibility of Urethane Acrylate-Based 3D-Printed Denture Base Resin

et al. 2021

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“…With the rapid development of 3D printing technology, higher requirements have been put forward for the quality of light-cured 3D printing products. As printing materials for SLA technology, photosensitive resins mainly include epoxy, acrylic resin, and polyester resin [ 13 , 14 , 15 ]. In recent years, researchers have improved the comprehensive performance of photosensitive resins through various methods, such as the development of novel resins, adjustment of existing formulations, and addition of inorganic fillers [ 16 , 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Exceptional Mechanical Properties and Heat Resistance of Photocurable Bismaleimide Ink for 3D Printing

Hua

Lin

et al. 2021

Materials

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Photosensitive resins used in three-dimensional (3D) printing are characterized by high forming precision and fast processing speed; however, they often possess poor mechanical properties and heat resistance. In this study, we report a photocurable bismaleimide ink with excellent comprehensive performance for stereolithography (SLA) 3D printing. First, the main chain of bismaleimide with an amino group (BDM) was synthesized, and then, the glycidyl methacrylate was grafted to the amino group to obtain the bismaleimide oligomer with an unsaturated double bond. The oligomers were combined with reaction diluents and photo-initiators to form photocurable inks that can be used for SLA 3D printing. The viscosity and curing behavior of the inks were studied, and the mechanical properties and heat resistance were tested. The tensile strength of 3D-printed samples based on BDM inks could reach 72.6 MPa (166% of that of commercial inks), glass transition temperature could reach 155 °C (205% of that of commercial inks), and energy storage modulus was 3625 MPa at 35 °C (327% of that of commercial inks). The maximum values of T-5%, T-50%, and Tmax of the 3D samples printed by BDM inks reached 351.5, 449.6, and 451.9 °C, respectively. These photocured BDM inks can be used to produce complex structural components and models with excellent mechanical and thermal properties, such as car parts, building models, and pipes.

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“…In the field of polymeric materials, VO have asserted and still counting. They are very important bio‐based feedstock, especially in technical and industrial use, 4‐7 but their versatile backbone deserves also more attention for the synthesis of those materials with application in biomedical fields.…”

Section: Introductionmentioning

confidence: 99%

“…To defeat the disadvantages associated to VO materials, such as its hydrophobicity or weaker mechanical properties as compared to fossil counterparts, adjusting through rational functionalization or combining with other components enables an adequate modulation of the final properties for the envisaged application 2,4,7‐9 …”

Section: Introductionmentioning

confidence: 99%

Exploring the potential of inexpensive high oleic sunflower oil for new polymeric architectures

Bãlãnucã

Ott

Damian

et al. 2021

Polymers for Advanced Techs

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Bicomponent polymeric architectures were fabricated through visible‐light polymerization starting from methacrylated and PEGylated high oleic sunflower oil (HO‐SFO) monomers and compatible polyethylene glycol dimethacrylate (PEG‐DMA) capable of swelling in biological simulated fluid. Conversion of the methacryl moieties in the photo‐polymerization reactions was monitored by FTIR spectrometry and also gel fraction measurements. The amount of PEG‐DMA co‐reactant and PEG units grafted on the HO‐SFO backbone were found to directly influence the key properties of the oil‐based polymers. DSC measurements proved that higher content of PEG‐DMA (1:1wt, related to HO‐SFO monomer) influence the crystallinity degree, favoring also the increase of PBS absorption capacity. PEG chains from the HO‐SFO structure acts as mediator for the hydrophobic and hydrophilic components, influencing the system mobility, networks arrangement, affording the higher degree for PBS absorption (almost 70% after 50 days of immersion). For all the studied systems two‐phase absorption process was observed and assigned to the esters hydrolysis, yielding new –COOH and –OH groups, XPS and SEM confirming this hypothesis. Polymers degradation during PBS immersion conduce to the elimination of PEG oligomers and unreacted methacryl moieties from the fatty acids, by diffusion in the swelling medium, phenomenon supported by detectable architectural changes from the SEM images.

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Thermal stability of UV-cured vegetable oil epoxidized acrylate-based polymer system for 3D printing application

Cited by 51 publications

References 44 publications

Mechanical Properties and Biocompatibility of Urethane Acrylate-Based 3D-Printed Denture Base Resin

Mechanical Properties and Biocompatibility of Urethane Acrylate-Based 3D-Printed Denture Base Resin

Exceptional Mechanical Properties and Heat Resistance of Photocurable Bismaleimide Ink for 3D Printing

Exploring the potential of inexpensive high oleic sunflower oil for new polymeric architectures

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