Cyanoacrylate–POSS nanocomposites: Novel adhesives with improved properties for dental applications

Fadaie, Parastoo; Atai, Mohammad; Imani, Mohammad; Karkhaneh, Akbar; Ghasaban, Samaneh

doi:10.1016/j.dental.2013.03.003

Cited by 40 publications

(33 citation statements)

References 34 publications

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“…The monofunctionality of POSS-1 may also reduce the average functionality of the cross-links in the network where preferentially long dangling chains or network with long mesh size are formed, leading to the lower amount of removable sol in the network. It has been shown that POSS particles with reactive groups acting as cross-linking agents can decrease the sol fraction and water sorption [9,37]. It has been shown that the BG-Bi at high concentration can increase the pH up to 10.8…”

Section: Discussionmentioning

confidence: 99%

“…particles has been shown to improve mechanical properties, such as flexural strength, toughness and to reduce network solubility and degradation [9]. POSS are nanostructured hybrid molecules with an inorganic framework of silicon and oxygen atoms and an outer shell of organic functional groups allowing polymerization [10].…”

Section: The Incorporation Of the Functionalized Polyhedral Oligomerimentioning

confidence: 99%

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Bioactivity and properties of a dental adhesive functionalized with polyhedral oligomeric silsesquioxanes (POSS) and bioactive glass

et al. 2017

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Section: Discussionmentioning

confidence: 99%

Section: The Incorporation Of the Functionalized Polyhedral Oligomerimentioning

confidence: 99%

Bioactivity and properties of a dental adhesive functionalized with polyhedral oligomeric silsesquioxanes (POSS) and bioactive glass

et al. 2017

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“…Usually, monofunctional POSS structures are used for side chain or end chain functionalization of organic compounds. On the other hand, multifunctional POSS molecules are employed as gelators to produce thermoset polymers or as cores to obtain star polymeric structures . Several POSS cored star polymers have been synthesized via copper mediated click chemistry and controlled radical polymerization techniques .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of POSS hybrid organogels using Menschutkin quaternization chemistry

Kilic

Balta

Saloglu

et al. 2018

Polymer International

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The present research describes a series of organic–inorganic hybrid gels based on polystyrene and polyhedral oligomeric silsesquioxanes (POSSs) prepared using free radical copolymerization and Menschutkin chemistry techniques. In the first step, poly(styrene‐co‐chloromethylstyrene) is readily achieved by thermally initiated radical copolymerization and the subsequently obtained copolymer reacts with diethanolamine functional POSS nanoparticles which are employed as the crosslinker. The resulting hybrid network possesses ionic moieties and inorganic POSS nanoparticles. The POSS‐containing hybrid gels exhibit excellent organic solvent absorption and show good mechanical behaviour. Gel containing 0.8 × 10−3 mmol of POSS(DEA)8 (DEA, diethanolamine) reached the highest swelling ratio; hence, the corresponding gel can absorb organic solvent up to 20× its weight. The rate constant, coefficients and diffusional behaviour of hybrid organogels in organic solvent were examined as well. The organic solvent intake of the hybrid gel follows a non‐Fickian type diffusion. © 2018 Society of Chemical Industry

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“…Photoactivation of polymerization offers significant advantages such as rapid curing, low energy demand, heat sensitive additives/substrates compatibility, as well as unique spatial and temporal control over the process. Various applications of photopolymerization including films, coatings, adhesives, biomaterials, photolithography, and 3D printing have been developed for decades. However, the volumetric shrinkage and shrinkage stress generated during the polymerization process remains a critical problem associated with the bulk polymerization of monomer, especially for multi‐(meth)acrylates that undergo polymer formation via a chain‐growth mechanism.…”

Section: Introductionmentioning

confidence: 99%

Effects of Photodegradable o‐Nitrobenzyl Nanogels on the Photopolymerization Process

Liu

Shah

Liu

et al. 2018

Macro Materials & Eng

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A series of partially photodegradable o‐nitrobenzyl nanogels (NBNG) with different caged functional groups (COOH, OH, SH) are prepared and compared with a nondegradable nanogel as additives in photocurable materials. Photoinduced nanogel network disruption and photoinitiated polymerization of infiltrating and dispersing monomer could be controlled independently. In triethylene glycol dimethacrylate (TEGDMA), o‐NBNGs that release a COOH or OH functional group upon photodegradation of the o‐nitrobenzyl crosslinker, the reduced chemical crosslinking density of the nanogel network allows greater penetration of monomer into the partially degraded nanogel network, which results in an increase in volumetric shrinkage and polymerization stress. In contrast, the formulation of o‐NBNGs with caged SH groups also can be photodegraded but is able to rebuild the chemical crosslinking through thiol‐based chain transfer reactions when photocured as a dispersion in TEGDMA. As such, it behaves like a photo‐inert nanogel. Dynamic thermomechanical analysis and testing by three‐point bending further confirms the photoinduced crosslink density variation influences mechanical properties of the final polymer networks. This work demonstrates the inherent properties of the nanogel network and the type of crosslinking can alter the performance of the photocured resin while a separate photochemical process can be used to regulate photoinduced polymerization.

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Cyanoacrylate–POSS nanocomposites: Novel adhesives with improved properties for dental applications

Cited by 40 publications

References 34 publications

Bioactivity and properties of a dental adhesive functionalized with polyhedral oligomeric silsesquioxanes (POSS) and bioactive glass

Bioactivity and properties of a dental adhesive functionalized with polyhedral oligomeric silsesquioxanes (POSS) and bioactive glass

Synthesis and characterization of POSS hybrid organogels using Menschutkin quaternization chemistry

Effects of Photodegradable o‐Nitrobenzyl Nanogels on the Photopolymerization Process

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