Mohammad Atai
Qazvin University of Medical Sciences
Composite numberUltimate tensile strengthMethacrylateNanoparticleBond strengthComposite materialFourier transform infrared spectroscopyMonomerFlexural strengthChemistryPolymer chemistryMaterials scienceScanning electron microscopeDental compositeDentinChemical engineeringPolymerizationPolymerAdhesiveFlexural modulusNanocomposite
133Publications
27H-index
2,732Citations
Publications 132
Newest
Abstract Objective To synthesize an amine-modified polyhedral oligomeric silsesquioxane (POSS) nano-structure as a novel co-initiator-crosslinker (co-Ini-Linker) and to determine the effect of the co-Ini-linker on the physical and mechanical behavior of an experimental dental composite. Methods The amine-methacrylate POSS nano-structures (AMA-POSS) were chemically synthesized by anchoring a tertiary amine functionality on the methacrylate POSS (MA-POSS) branches. Three types of AMA-POSS, having ...
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#1Laleh Solhi (Aalto University)H-Index: 7
#2Mohammad AtaiH-Index: 27
Last. Mohammad ImaniH-Index: 28
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Abstract Objective In this study, we incorporated hybrid nanoparticles (poly (acrylic acid)-grafted nanoclay/nanosilica, respectively, with platelet and spherical morphologies, abbreviated as PAA-g–NC–Sil) in different concentrations (0, 0.2, 0.5, 1, 2 and 5wt.%) to an experimental dentin bonding system and investigated the physical properties of the filled adhesive and its shear bond strength (μ-SBS) to dentin. We subsequently compared the properties of the adhesives containing PAA-g–NC–Sil wit...
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#1Reza Zeinali (IAU: Islamic Azad University)
#1Reza Zeinali (IAU: Islamic Azad University)H-Index: 1
Last. Jordi Puiggalí (UPC: Polytechnic University of Catalonia)H-Index: 39
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Thermally induced phase separation followed by freeze drying has been used to prepare biodegradable and biocompatible scaffolds with interconnected 3D microporous structures from poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) copolymers containing 5 and 12 wt % of 3-hydroxyvalerate (HV). Solutions of PHBV in 1,4-dioxane, underwent phase separation by cooling under two different thermal gradients (at −25 °C and −5 °C). The cloud point and crystallization temperature of the polymer solutions were...
1 CitationsSource
#1Samahe SadjadiH-Index: 23
#2Fatemeh KoohestaniH-Index: 5
Last. Mohammad AtaiH-Index: 27
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#1Laleh Solhi (Aalto University)H-Index: 7
#2Mohammad AtaiH-Index: 27
Last. Mohammad ImaniH-Index: 28
view all 4 authors...
Abstract: Objective In this study the mechanical and adhesion properties of an experimental methacrylate based dentin bonding system containing a combination of spherical and layered platelet nanoparticles were investigated. The nanoparticles were first modified through surface graft polymerization of methacrylic acid in order to make the particles surface compatible with the bonding matrix resin. Materials and methods Graft free radical polymerization in aqueous media was performed to attach Po...
2 CitationsSource
Abstract The aim of this study was to synthesize acrylic core-shell particles and silica-loaded core-shell hybrid particles through emulsion polymerization. Also this work examined the influence of synthesized nanoparticles loading in a Bis-GMA/TEGDMA resin matrix on some mechanical properties of the dental composite resins. Core-shell particles consisting of polybutyl acrylate (PBA) rubbery core and polymethyl methacrylate (PMMA)/polystyrene (PS) shell were synthesized by seeded emulsion polyme...
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#1Azin Mazloom-Jalali (AUT: Amirkabir University of Technology)H-Index: 4
#2Faramarz Afshar Taromi (AUT: Amirkabir University of Technology)H-Index: 18
Last. Laleh Solhi (Aalto University)H-Index: 7
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Abstract A facile procedure has been devised to develop a novel dentin bonding system containing poly (acrylic acid)-grafted-silanized fumed silica particles as reinforcing filler, with high stability of nanoparticle dispersion and enhanced bond strength and mechanical properties. In the first step, the silanization of fumed silica nanoparticles was performed in the following conditions: (i) ethanol-water solution with a pH of 5 and (ii) cyclohexane with a pH of 9 using trimethoxysilylpropyl met...
1 CitationsSource
1 CitationsSource
#1Sepehr Salari (UT: University of Tehran)H-Index: 3
#1Sepehr Salari (UT: University of Tehran)H-Index: 1
Last. Mohammad AtaiH-Index: 27
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1 CitationsSource
#1Raz AbbasiH-Index: 1
#2Azizollah NodehiH-Index: 10
Last. Mohammad AtaiH-Index: 27
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Abstract Objective The aim of this study was to synthesize poly(acrylic acid-co-itaconic acid) (PAA-co-PIA) ionomer through a novel precipitation photopolymerization technique. The ionomer was characterized and the effect of its structural parameters, such as molecular weight and copolymer composition were investigated on the mechanical properties of glass-ionomer prepared using the ionomer. Methods Design of experiment (DOE) was used to examine the effect of monomer ratio and the amount of chai...
1 CitationsSource