The role of polymeric nanofibers on the mechanical behavior of polymethyl methacrylate resin

Gonçalves, Natália In Ês; Münchow, Eliseu Aldrighi; Santos, Jéssica Dias; Sato, Tábata Prado; Oliveira, Leticia Rodrigues De; Paes, Tarcísio José de Arruda; Bottino, Marco C.; Borges, Alexandre Luiz Souto

doi:10.1016/j.jmbbm.2020.104072

Cited by 8 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The observation of a planar fracture model in the control group revealed the fragile structure of PMMA (33). From the multiple fracture planes, together with gaps seen in the GP group, it can be said that graphene powder brings PMMA into a plastic state.…”

Section: Discussionmentioning

confidence: 95%

A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA

Unal

2022

Int Dent Res

View full text Add to dashboard Cite

Aim: The aim of this study was to compare the effects of powder, mat, and sheet forms of graphene and polyvinylpyrrolidone (PVP) on the bending strength of polymethyl methacrylate (PMMA). Methodology: A total of 75 PMMA samples (64 x 13 x 3 mm) were obtained and separated into five groups of 15, one of which was the control group. No strengthening material was added to the control group samples. In the PMMA+Polyvinylpyrrolidone powder (PVPP) (Group B) and PMMA+Graphene powder (GP) groups (Group D), PVP (0.5%) and graphene (0.01%) powders, respectively were added to the PMMA. In the PMMA+Polyvinylpryrolidone fiber mat (PVPM) (Group C) and PMMA+Graphene sheet (GS) groups (Group E), a PVP mat and graphene sheet, respectively were placed in the center of a square PMMA resin mold. To measure the samples’ resistance to bending, the three-point bending test (ISO 1567) was applied. Fracture lines were examined under a scanning electron microscope (SEM), and bending strength was analyzed using one-way analysis of variance (ANOVA). Results: A statistically significant difference was determined between the GS (118.5093 ± 11.94859 Mpa) and PVPP (105.5267 ± 6.80595 Mpa) groups. The mean bending resistance values were numerically higher in the PVPM (115.8487 ± 17.15440), GS (118.5093 ± 11.94859), and GP (116.2680 ± 16.03207) groups compared to the control group (108.2407 ± 24.23104). The graphene sheets and PVP mats showed higher resistance to bending than the powder form of either material. Conclusion: In clinical dental prosthesis use, PVP mats and graphene sheets are preferable with respect to both PMMA strengthening and color. How to cite this article: Mutluay Ünal S. A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA. Int Dent Res 2022;12(2):62-9. https://doi.org/10.5577/intdentres.2022.vol12.no2.4 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

show abstract

Section: Discussionmentioning

confidence: 95%

A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA

Unal

2022

Int Dent Res

View full text Add to dashboard Cite

show abstract

“…In order to reveal the toughening mechanism of epoxy resin toughened by nano-rubber particles, the fracture toughness of the material was investigated at low (5 × 10 −4 s −1 , 1 × 10 −1 s −1 , 2.5 × 10 −1 s −1 ) and high (90 s −1 ) strain rates, and found that the toughening effect of nano-rubber particles on epoxy resin is significant at low strain rate while the toughening effect is significantly weakened at high strain rates [7]. In addition, quasi-static and dynamic compression experiments were used to reveal the effect of liquid nitrile butadiene rubber (LNBR) on the mechanical properties of epoxy resins [8], the effect of 2-Hydroxyethyl methacrylate-grafted graphene oxide (HEMA-g-GO) on the properties of photosensitive resins [9], and the effect of nanofibers on the mechanical properties of polymethyl methacrylate [10]. In order to understand the strengthening effect of structural improvement on the mechanical properties of the material, the additively-manufactured layered-hybrid lattice structure [11] and resin honeycomb structure [12,13] were selected to carry out static and dynamic mechanical properties tests, and the strain distribution was analyzed by digital image correlation (DIC) method.…”

Section: Introductionmentioning

confidence: 99%

Dynamic mechanical properties and constitutive model of photosensitive resin specimens at different temperatures

et al. 2023

View full text Add to dashboard Cite

In order to reveal the dynamic mechanical properties of resin-molded parts prepared from photosensitive resin composition at different temperatures, four typical service temperatures (26 °C, 50 °C, 70 °C and 90 °C) were selected, and the mechanical properties of photosensitive resin specimens under quasi-static and high strain rate (1200 s−1, 1500 s−1 and 1800 s−1) loading were tested by universal material testing machine and split Hopkinson pressure bar (SHPB) experimental device. The stress–strain data of the material were obtained. Results show that the stress of photosensitive resin specimens decreases with the increase of temperature under quasi-static and high strain rate loading conditions, reflecting a certain temperature softening effect. Two typical stages of strain softening and strain hardening exist in the quasi-static compression process of the specimens at room temperature, while the specimens only exhibit strain hardening at 50 °C, 70 °C and 90 °C. Under dynamic loading, the elastic modulus, peak stress and peak strain of the photosensitive resin increase with the increase of the strain rate, reflecting an obvious effect of strain rate strengthening. The nonlinear thermo-viscoelastic constitutive model can better describe the mechanical behavior of the material under high strain rates and service temperatures, and the experimental values are in good agreement with the fitted values of the model. The results can provide theoretical model and method support for the design and development of resin-based materials and the optimization of their mechanical properties.

show abstract

“…4,5 In the last 20 years, the electrospun nanofiber veils had been proven the ideal reinforcement to be interleaved between two piles of CFRPs because of the following main aspects: thinness and light which make their impact on weight and thickness of the final manufactured negligible; porosity which makes resin flow easily through them without causing non-uniform dispersion of nanofiller; tiny volume which means the actual volume of the nanofiber interleaves shrinks when pressure is applied during the curing process; super well mechanical property due to nanofibers' mechanical properties is significantly higher than those of the same material in bulk state. 6,7 From the research of various aspects of electrospun nanofiber reinforced thermoplastic resin, electrospun nanofiber can potentially enhance the damage resistance of CFRTPs laminate system, [8][9][10][11] and the mechanical toughening effect of nanoreinforce in CFRTPs laminate system is an issue to be characterized.…”

Section: Introductionmentioning

confidence: 99%

Nanofiber veil applied in toughness enhancement of thermoplastic carbon fiber composites

Shi

Takahashi

Takeno

et al. 2022

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

This study presents an experimental investigation on thermoplastic carbon fiber composite based on PMMA resin interleaved with Polyamide electrospun nanofiber veils. In particular, the effect of improving the interfacial adhesion of the resin to nanofiber and carbon fiber on the fracture behavior of the laminates and the corresponding fracture mechanism was studied by using different molar concentrations of functional monomer hydroxyethyl acrylamide (HEAA) for copolymerization with methyl methacrylate. The effectiveness of the nanoreinforce has been addressed by Mode-Ⅰ and Mode-Ⅱ tests. The results showed that the fracture toughness of Mode-Ⅰ decreased firstly and then increased with an increase in HEAA feed with 0–5 mol% due to the change of crack tip path accompanied by the bridging mechanism shifting, the best performance was founded in 5 mol% HEAA-copolymerized thermoplastic carbon fiber composites (CFRTP) samples (17.6% for initiation and 28% for propagation); whereas a characteristic of increasing firstly and then decreasing performed under Mode-Ⅱ loading due to the formation of multilayer microcrack in nano-toughing matrix layer, the 3 mol% HEAA-copolymerized CFRTP samples exhibited good improvement (137% for initiation and 147% for propagation).

show abstract

The role of polymeric nanofibers on the mechanical behavior of polymethyl methacrylate resin

Cited by 8 publications

References 37 publications

A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA

A comparison of the effect of different forms of Graphene and Polyvinylpyrrolidone on physically strengthening PMMA

Dynamic mechanical properties and constitutive model of photosensitive resin specimens at different temperatures

Nanofiber veil applied in toughness enhancement of thermoplastic carbon fiber composites

Contact Info

Product

Resources

About