The capability of organic compounds to swell acrylonitrile butadiene O-rings and their effects on O-ring mechanical properties

Romanczyk, Mark; Velasco, Jorge H. Ramirez; Xu, Lan; Vozka, Petr; Dissanayake, Pankaja; Wehde, Katherine E.; Roe, N.; Keating, Eion; Trice, Rodney W.; Prak, Dianne J. Luning; Kenttämaa, Hilkka I.

doi:10.1016/j.fuel.2018.10.103

Cited by 25 publications

(20 citation statements)

References 26 publications

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“…In general, there are two major factors that contributed to these differences: the sample geometry; and the materials. Sample geometry influences the maximum force and displacement in a way that it dictates the mechanical stress and strain induced by deformation [ 31 ]. In the case of polymeric orthodontic ligature ties, samples with greater average diameter would require higher force to break [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

“…Sample geometry influences the maximum force and displacement in a way that it dictates the mechanical stress and strain induced by deformation [ 31 ]. In the case of polymeric orthodontic ligature ties, samples with greater average diameter would require higher force to break [ 31 ]. However, even then, the maximum force of Brand B samples was the lowest, despite not being the smallest in the average diameter.…”

Section: Discussionmentioning

confidence: 99%

“…However, even then, the maximum force of Brand B samples was the lowest, despite not being the smallest in the average diameter. This was due to the fact that Brand B samples had the shortest internal circumferences, which increased the mechanical strain per unit of displacement of samples [ 31 ]. Hence, the localized concentration of mechanical stress and strain around the internal circumference area was likely to be the cause of fracture for Brand B samples, and this could also be the reason why Brand B samples exhibited the shortest maximum displacement and fractured upon being uniformly stretched.…”

Section: Discussionmentioning

confidence: 99%

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Influence of Mouthwash Rinsing on the Mechanical Properties of Polymeric Ligature Ties Used for Dental Applications

et al. 2021

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Mouthwashes are used during dental treatments to mitigate the complications caused by poor oral hygiene. However, these solutions also affect the properties of dental appliances, including those used in orthodontics. This point has been investigated in this study focusing on the changes in mechanical properties of polymeric orthodontic ligature ties. Commercial ties from four brands were characterized in terms of their maximum forces and displacement, delivery forces, molecular structures, and microscopic morphology. These properties were compared against the ties, which were rinsed with commercial mouthwashes from three manufacturers. The results showed that mouthwash rinsing significantly reduced the maximum bearable forces of ligature ties by up to 73.1%, whereas the reduction in their maximum displacement was up to 74.5% across all tested brands. Significant changes in microscopic morphology of ligature ties were observed after mouthwash rinsing, but not their molecular structure. Furthermore, mouthwash rinsing also reduced the delivery forces from ligature ties by between 20.9 and 32.9% at their first deformation cycle. It can be concluded from this study that mouthwashes have significant impact on the mechanical properties of polymeric orthodontic ligature ties and could also potentially affect the overall efficacy of orthodontic and other dental treatments.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Influence of Mouthwash Rinsing on the Mechanical Properties of Polymeric Ligature Ties Used for Dental Applications

et al. 2021

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“…In addition, these mixtures of acyclic alkanes do not adequately swell nitrile rubber engine seals, and without engine system modifications, may cause elastomer seals to shrink and malfunction [18,19] . In contrast, recent studies have shown that 30 % cycloalkane blends have the same swelling capability as low (8 %) aromatic fuel blends [20–23] . Cycloalkanes also have higher densities due to their constrained geometries, and significantly higher volumetric NHOCs than SPKs and traditional jet fuels [17] …”

Section: Introductionmentioning

confidence: 99%

“…[18,19] In contrast, recent studies have shown that 30 % cycloalkane blends have the same swelling capability as low (8 %) aromatic fuel blends. [20][21][22][23] Cycloalkanes also have higher densities due to their constrained geometries, and significantly higher volumetric NHOCs than SPKs and traditional jet fuels. [17] Due to growing interest in the development of highperformance bio-based jet fuels that can out-perform conventional jet fuels, while reducing net CO 2 emissions, a number of new technologies for the conversion of biomass feedstocks to sustainable cycloalkane fuels have been explored.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Bio‐Based Methylcyclopentadiene from 2,5‐Hexanedione: A Sustainable Route to High Energy Density Jet Fuels

Woodroffe

Harvey

2020

ChemSusChem

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The sustainable, bio-based, platform chemical, 2,5-hexanedione [HD (1)], was efficiently converted to methylcyclopentadiene [MCPD (4)] through a three-step process consisting of intramolecular aldol condensation, catalytic chemoselective hydrogenation, and dehydration. Base-catalyzed aldol condensation of 1 resulted in the formation of 3-methyl-2-cyclopenten-1-one [MCO (2)], which was then converted to 3-methyl-2-cyclopenten-1-ol [MCP (3)] by chemoselective reduction with a ternary Ru catalyst system [RuCl 2 (PPh 3) 3 /NH 2 (CH 2) 2 NH 2 /KOH]. The hydrogenation proceeded with 96 % chemoselectivity. 3 was then dehydrated over AlPO 4 /MgSO 4 at 70°C under reduced pressure to yield 4, which can undergo an ambient temperature [4 + 2]-Diels-Alder cyclization to generate dimethyldicyclopentadiene (DMDCPD), a commodity chemical useful for the preparation of high-performance fuels and polymers. Through this approach, advanced jet fuels and materials can be conveniently produced from sustainable cellulosic feedstocks.

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Determination of three‐dimensional solubility parameters of HNBR/EPDM blends and the transport behaviors in ester solvents

Jiang

Yuan

Guo

et al. 2022

J of Applied Polymer Sci

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To enrich the research on the solubility parameter of rubber blends, equilibrium swelling tests combined with computer software, Hansen solubility parameter in practice (HSPiP), were employed to deeply investigate the three‐dimensional solubility parameters (HSP) of hydrogenated nitrile rubber/ethylene propylene diene monomer rubber (HNBR/EPDM) blends. And the transport behaviors of four ester solvents have been studied through the calculation of sorption and permeation coefficients. It is found that the HSP values of HNBR/EPDM blends show linear relationships with the mass fraction of HNBR. And a linear equation has been obtained for the calculation of the solubility parameters of HNBR/EPDM blends. Sorption and permeation coefficients show two‐stage upward linear relationships with the HNBR concentration, which can be attributed to the sea phase in the blend playing a decisive role in the transport behaviors of solvents. Moreover, the trend of the selective adsorption of the solvent is more obvious in the permeating process than that at the final equilibrium swelling state. The achievements can provide important guidance for evaluating the liquid resistance of the HNBR/EPDM‐based rubber products in industrial and automotive applications.

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The capability of organic compounds to swell acrylonitrile butadiene O-rings and their effects on O-ring mechanical properties

Cited by 25 publications

References 26 publications

Influence of Mouthwash Rinsing on the Mechanical Properties of Polymeric Ligature Ties Used for Dental Applications

Influence of Mouthwash Rinsing on the Mechanical Properties of Polymeric Ligature Ties Used for Dental Applications

Synthesis of Bio‐Based Methylcyclopentadiene from 2,5‐Hexanedione: A Sustainable Route to High Energy Density Jet Fuels

Determination of three‐dimensional solubility parameters of HNBR/EPDM blends and the transport behaviors in ester solvents

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