Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Ôtsuka, Takeshi; Chujo, Yoshiki

doi:10.1038/pj.2009.309

Cited by 94 publications

(69 citation statements)

References 40 publications

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“…The spectrum of modified silica zirconia in this figure showed bands at 971 cm -1 due to that the Si-O-Zr bond confirmed the replacement of Si-OH with Si-O-Zr. The FTIR obtained was in concurrence with the reported FTIR for silica and zirconia [52]. SiZr 5% Figure 6.…”

Section: 5supporting

confidence: 75%

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Ellateif¹,

Mitra²

2017

JAN

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Abstract. Hydrophobic mesoporous zirconia containing silica nanoparticles was synthesized via sol gel process. Silica sol was prepared and subsequently liquid modified with different proportions of zirconia. The effects of zirconia content on the silica textures and properties were studied. TGA results confirmed the development of hydrophobicity in zirconia containing silica nanoparticles. The synthesized nanoparticles were characterized by FTIR and XRF. The topography of silica particles changed as a function of zirconia content as evident from FESEM and TEM results. From XRD investigation, surface area measurement and pore size analysis it was observed that the synthesized silica was semi amorphous materials with very narrow pore diameter distribution as a function of zirconia content. From nitrogen physisorption studies mesoporous nature (type V) of the synthesized silica was noted. The synthesized pure silica possessed significant surface area while the zirconium content caused a reduction on the surface area of silica zirconium nanoparticles.

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Section: 5supporting

confidence: 75%

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Ellateif¹,

Mitra²

2017

JAN

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“…On the other hand, organofunctional groups (X) contain double bond (C=C) that can bond to PMMA. 44,45 Preparation of PMMa/ZrO 2 nanocomposite…”

Section: Silanization Of Nano-zro 2 Particlesmentioning

confidence: 99%

Effect of zirconium oxide nanoparticles addition on the optical and tensile properties of polymethyl methacrylate denture base material

Gad¹,

Abualsaud²,

Rahoma

et al. 2018

IJN

109

119

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Background Polymethyl methacrylate (PMMA) is widely used for the fabrication of removable prostheses. Recently, zirconium oxide nanoparticles (nano-ZrO 2 ) have been added to improve some properties of PMMA, but their effect on the optical properties and tensile strength are neglected. Objective The aim of this study was to investigate the effect of nano-ZrO 2 addition on the translucency and tensile strength of the PMMA denture base material. Materials and methods Eighty specimens (40 dumbbell-shaped and 40 discs) were prepared out of heat-polymerized acrylic resin and divided into four groups per test (n=10). The control group for each test included unreinforced acrylic, while the test groups were reinforced with 2.5, 5, and 7.5 wt% nano-ZrO 2 . Acrylic resin was mixed according to manufacturer’s instructions, packed, and processed by conventional method. After polymerization, all specimens were finished, polished, and stored in distilled water at 37°C for 48±2 hours. Tensile strength (MPa) was evaluated using the universal testing machine while the specimens’ translucency was examined using a spectrophotometer. Statistical analysis was carried out by SPSS using the paired sample t -test ( p ≤0.05). A scanning electron microscope was used to analyze the morphological changes and topography of the fractured surfaces. Results This study showed that the mean tensile strength of the PMMA in the test groups of 2.5%NZ, 5%NZ, and 7.5%NZ was significantly higher than the control group. The tensile strength increased significantly after nano-ZrO 2 addition, and the maximum increase seen was in the 7.5%NZ group. The translucency values of the experimental groups were significantly lower than those of the control group. Within the reinforced groups, the 2.5%NZ group had significantly higher translucency values when compared to the 5%NZ and 7.5%NZ groups. Conclusion The addition of nano-ZrO 2 increased the tensile strength of the denture base acrylic. The increase was directly proportional to the nano-ZrO 2 concentration. The translucency of the PMMA was reduced as the nano-ZrO 2 increased. Clinical significance Based on the results of the current study, the tensile strength was improved with different percentages of nano-ZrO 2 additions. However, translucency was adversely affected. Therefore, it is important to determine the appropriate amount of reinforcing nano-ZrO 2 that will create a balance between achieved properties – mechanical and optical.

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“…The first band arose from the asymmetrical stretching mode in which two CAH bonds of the methyl group were extended. [33][34][35] The second band arose from symmetrical stretching (CH 3 ). At 1731 cm À1 , a sharp intense peak appeared; this peak was attributed to the presence of ester carbonyl group stretching vibrations (C¼ ¼O).…”

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confidence: 99%

Surface properties of methyl methacrylate hardened hybrid poplar wood

Koubaa

Ding

Chaala

et al. 2011

J of Applied Polymer Sci

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The surface properties of fast-growing poplar clones and their methyl methacrylate (MMA)-hardened wood related to potential end uses were investigated. Samples from 24 trees of six hybrid poplar clones in one plantation in Quebec were hardened with MMA. The effects of MMA hardening on the density and surface properties were studied. Scanning electron microscopy and Fourier transform infrared analysis showed that filling the voids in the wood structure was the main hardening mechanism. The incorporation of the polymer increased the density of all of the poplar clones by 120-160%. The Janka hardness was found to be 2.5-4 times higher in the treated poplar wood than in the untreated poplar wood. The treated wood also exhibited superior abrasion resistance compared to the controls. The results indicate that hardening with MMA improved the surface properties and that the MMA-hardened wood was comparable to natural hardwoods.

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Poly(methyl methacrylate) (PMMA)-based hybrid materials with reactive zirconium oxide nanocrystals

Cited by 94 publications

References 40 publications

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Sol Gel Synthesis and Characterization of Zirconia Containing Hydrophobic Silica Nanoparticles

Effect of zirconium oxide nanoparticles addition on the optical and tensile properties of polymethyl methacrylate denture base material

Surface properties of methyl methacrylate hardened hybrid poplar wood

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