Influence of different crosshead speeds on diametral tensile strength of a methacrylate based resin composite: An in-vitro study

Sood, Anubhav; Ramarao, Sathyanarayanan; Usha, Carounanidy

doi:10.4103/0972-0707.157253

Cited by 10 publications

(9 citation statements)

References 20 publications

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“…The tensile strength measurements were conducted following those reported by Idicula et al [ 58 ] and Mohanty et al [ 59 ]. The measurements were carried out at 3 mm/min crosshead speed in order to obtain the rupture within the timeframe [ 60 ]. Tensile strength was found to increase with the increasing concentration of BP, as reported by Allaf et al [ 54 ].…”

Section: Resultsmentioning

confidence: 99%

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

et al. 2022

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The use of biodegradable polymers in daily life is increasing to reduce environmental hazards. In line with this, the present study aimed to develop a fully biodegradable polymer composite that was environmentally friendly and exhibited promising mechanical and thermal properties. Bamboo powder (BP)-reinforced polycaprolactone (PCL) composites were prepared using the solvent casting method. The influence of BP content on the morphology, wettability, and mechanical and thermal properties of the neat matrix was evaluated. In addition, the degradation properties of the composites were analysed through soil burial and acidic degradation tests. It was revealed that BP contents had an evident influence on the properties of the composites. The increase in the BP content has significantly improved the tensile strength of the PCL matrix. A similar trend is observed for thermal stability. Scanning electron micrographs demonstrated uniform dispersion of the BP in the PCL matrix. The degradation tests revealed that the biocomposites with 40 wt·% of BP degraded by more than 20% within 4 weeks in the acidic degradation test and more than 5% in the soil burial degradation test. It was noticed that there was a considerable difference in the degradation between the PCL matrix and the biocomposites of PCL and BP. These results suggest that biodegradable composites could be a promising alternative material to the existing synthetic polymer composites.

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Section: Resultsmentioning

confidence: 99%

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

et al. 2022

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“…The variation in the crosshead speed between 0.5 and 10 mm/min does not appear to affect the tensile properties of composite materials. [31] Five replicates were performed for each specimen to find out tensile strength and elastic modulus.…”

Section: Tensile Propertiesmentioning

confidence: 99%

Physical, thermal, morphological, and tensile properties of cornstarch-based films as affected by different plasticizers

Ibrahim

Sapuan

Zainudin

et al. 2019

International Journal of Food Properties

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The current research was designed to determine the effect of various concentrations (0%, 25%, 40%, and 55%) of fructose, sorbitol and urea plasticizers in cornstarch-based films, with the aim of achieving a new polymer for the application of biodegradable materials. Casting technique was used to prepare the films. The physical, morphological, thermal, and mechanical properties of produced films were evaluated. The results showed that the thickness, moisture content, and water solubility increased with the addition of plasticizer concentration. While the glass transition temperatures showed an insignificant effect with high plasticizer content. Regardless of plasticizer sort, the tensile stress and Young's modulus of plasticized films decreased as the plasticizer concentrations were raised beyond 25%. Likewise, the relative crystallinity decreased by increasing the plasticizer content from 0% to 25%, but it began to grow once the concentration increased above 25%. The fructose-plasticized films presented consistent and more coherent surfaces compared to sorbitol and urea counterparts, which appeared less homogeneous surfaces with microcracks. In summary, the plasticizers types and concentrations are affected significantly on the properties and performance of the cornstarch-based film. Film plasticized with 25% fructose appeared the finest set of features and achieved the highest mechanical performance among the plasticizers used in this study.

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“…Studies showed contradictory results regarding the effects of crosshead speed on the SBS and TBS. For example, Sood et al ., [ 85 ] indicated that crosshead speed variation between 0.5 and 10 mm/min did not have an influence on diametral tensile strength of a resin composite. However, another study reported statistically higher bond strengths for specimens loaded at 1.0 and 5.0 mm/min compared to 0.5 and 0.75 mm/min [ 86 ].…”

Section: Factors That Affect Bond Strength Measurementmentioning

confidence: 99%

Assessment of Bonding Effectiveness of Adhesive Materials to Tooth Structure using Bond Strength Test Methods: A Review of Literature

Mourad

2018

TODENTJ

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Background:The rapid developments in the field of adhesive dental materials have led to improvements in many aspects of clinical dentistry. Adhesive bond strength plays an important role in determining the clinical performance and longevity of dental restorations. Nevertheless, bond strength tests have never been well-standardized, although a number of important recommendations have been made.Objective:The aim of this paper is to critically review the validity of different bond strength testing methods for assessment of bonding effectiveness of adhesive materials to tooth structure and discuss factors that may affect bond strength measurement.Data Collection:Relevant literature published between 1983 and 2018 was collected and reviewed from the PubMed database and Google scholar resources.Review Results:Results of the current bond testing methods should be used to compare materials tested under the same laboratory settings, but they shouldn’t be used to make direct inferences on their clinical behaviour. Shear and micro-shear tests, result in non-uniform stress distribution, stress concentration at the substrate area, and predominantly tensile stresses rather than shear stresses. Micro-tensile bond tests provide many advantages over the shear tests, although these methods are technique sensitive and labour intensive.Conclusion:Bond strength testing methods should be well-standardized, but there are many factors that cannot be fully controlled which leads to variation and misinterpretation of the data about the bonding abilities of adhesives.Clinical Significance:New adhesive materials should be subjected to a combination of testing protocols to properly assess their bonding effectiveness.

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Influence of different crosshead speeds on diametral tensile strength of a methacrylate based resin composite: An in-vitro study

Cited by 10 publications

References 20 publications

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

Development of Biodegradable Composites Using Polycaprolactone and Bamboo Powder

Physical, thermal, morphological, and tensile properties of cornstarch-based films as affected by different plasticizers

Assessment of Bonding Effectiveness of Adhesive Materials to Tooth Structure using Bond Strength Test Methods: A Review of Literature

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