Mechanical and surface hardness properties of ultraviolet-cured polyurethane acrylate anionomer/silica composite film

Oh, In-Seok; Park, No-Hyung; Suh, Kyung‐Do

doi:10.1002/(sici)1097-4628(20000214)75:7<968::aid-app14>3.0.co;2-g

Cited by 19 publications

(8 citation statements)

References 23 publications

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“…The hardness of the material can thus be the exponent of the prosthesis wear resistance capability [ 41 ]. According to theoretical considerations the addition of inorganic nanofiller particles to the polymer matrix increases the hardness of the material [ 42 ]. The results of this study show that the incorporation of ZnO-NPs to PMMA for 7.5% nanocomposite increases the hardness by 5.92% and this is a statistically significant difference.…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Physicochemical Properties of Newly Formed ZnO-PMMA Nanocomposites for Denture Bases

et al. 2018

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Aim: The aim of this study was to investigate the selected properties of zinc oxide- polymethyl methacrylate (ZnO-PMMA) nanocomposites that can influence the microorganism deposition on their surface. Materials and Methods: Non-commercial ZnO-NPs were prepared, characterized and used for the preparation of PMMA nanocomposite. Roughness, absorbability, contact angle and hardness of this new nanomaterial were evaluated. PMMA without ZnO-NPs served as control. Outcomes: Compared to unenriched PMMA, incorporation of ZnO-NPs to 7.5% for PMMA nanocomposite increases the hardness (by 5.92%) and the hydrophilicity. After modification of the material with zinc oxide nanoparticles the roughness parameter did not change. All tested materials showed absorption within the range of 1.82 to 2.03%, which meets the requirements of International Organization for Standardization (ISO) standards for denture base polymers. Conclusions: The results showed no significant deterioration in the properties of acrylic resin that could disqualify the nanocomposite for clinical use. Increased hydrophilicity and hardness with absorbability within the normal range can explain the reduced microorganism growth on the denture base, as has been proven in a previous study.

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Section: Resultsmentioning

confidence: 99%

Mechanical and Physicochemical Properties of Newly Formed ZnO-PMMA Nanocomposites for Denture Bases

et al. 2018

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“…This result was considered due to the imperfect dispersion of the silica nanoparticles at high loadings because a good dispersion of nanoparticles becomes more difficult with increasing the content of the nanoparticles even though the surfaces of the nanoparticles were modified effectively. Oh et al15 also reported that their UV‐cured polyurethane‐acrylate nanocomposite film showed its maximum tensile strength of 1.45 kg f /mm 2 at 2% neat silica loading. Derya et al16 also reported that the tensile strength of the UV‐cured epoxy nanocomposite film showed the maximum value of 3.18 kg f /mm 2 at 4% organically modified silica loading.…”

Section: Resultsmentioning

confidence: 95%

UV‐cured polyester‐acrylate nanocomposite films with silane‐grafted silica nanoparticles

Lee

Kim

2011

Polymers for Advanced Techs

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UV-curing technique was employed in this study to prepare polyester-acrylate nanocomposite films with silanegrafted silica nanoparticles. Methacryloxypropyl trimethoxysilane was grafted to the surfaces of silica nanoparticles to improve dispersion of silica nanoparticles as well as interfacial adhesion between the resin matrix and silica nanoparticles. The silane-grafting was confirmed by nuclear magnetic resonance and infrared spectroscopy. The effects of the silane-grafting on the mechanical and optical properties as well as UV-curing behavior of the nanocomposite films were investigated. The tensile strength, transmittance, UV-curing rate, and final chemical conversion of the nanocomposite films were increased by use of the grafted silica nanoparticles as compared to the use of neat silica nanoparticles.

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“…However, low-thermal stability limits its application in wide variety of engineering fields. Most of PUA characteristics can be improved by the incorporation of inorganic components and the formation of hybrid materials [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyurethane-acrylate and silica nanoparticle hybrid composites by a free radical network formation method

2019

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In this study, hybrid composites of polyurethane-acrylate (PUA) and silica nanoparticle were prepared by a radical method. For this aim, silica nanoparticles were chemically functionalized with 3-methacryloxypropyltrimethoxysilane. Polyurethane was synthesized and then modified with 2-hydroxyethyl methacrylate to yield PUA. Then, different amounts of modified-silica were used to prepare PUA composites by the addition of an ethylene glycol dimethacrylate crosslinker. Fourier-transform infrared spectroscopy confirmed the successful functionalization of silica nanoparticles and the preparation of PUA. Structural investigation of the functionalized-nanoparticles and also nanocomposites was carried out using X-ray diffraction and electron microscopy. According to the thermal gravimetric analysis results, char residue of HSiO 2 is 86.6%, which decreases to 81.3% in the case of MSiO 2 as a result of its modifier degradation content of 5.3%. PUAS5 shows main decomposition temperatures of 396.5 and 454.9 • C and also char content of 5.7% at 700 • C. The high amount of MSiO 2 can also be resulted in higher degree of crosslinking and therefore higher thermal stabilities and char residue.

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Mechanical and surface hardness properties of ultraviolet-cured polyurethane acrylate anionomer/silica composite film

Cited by 19 publications

References 23 publications

Mechanical and Physicochemical Properties of Newly Formed ZnO-PMMA Nanocomposites for Denture Bases

Mechanical and Physicochemical Properties of Newly Formed ZnO-PMMA Nanocomposites for Denture Bases

UV‐cured polyester‐acrylate nanocomposite films with silane‐grafted silica nanoparticles

Preparation of polyurethane-acrylate and silica nanoparticle hybrid composites by a free radical network formation method

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