The Effect of Gamma Irradiation on HDPE/HA Composite as Candidate Material Dental Implant

Gultom, Pormauli; Wicaksono, Sigit Tri; Purniawan, Agung; Sudirman, Sudirman; Sukaryo, Sulistioso Giat

doi:10.12962/j20882033.v31i1.5628

Cited by 2 publications

(2 citation statements)

References 14 publications

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“…34 In a degradability test study with membranes irradiated at a dose of 15 and 25 kGy after immersion in PBS solution, the membranes irradiated with a dose of 25 kGy were degraded less than the dose of 15 kGy. 35 At an optimal dose of 25 kGy can increase the polymer's cross-linking, which provides structural strength and stability to the ion. When polymers are exposed to gamma radiation, structural changes occur accompanied by cross-linking between molecules.…”

Section: Discussionmentioning

confidence: 99%

Characterization of Polyvinyl Alcohol–Collagen–Hydroxyapatite Composite Membrane from Lates calcarifer Scales for Guided Tissue and Bone Regeneration

et al. 2023

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Objective To determine the chemical structure, tensile strength, porosity, and degradability of polyvinyl alcohol (PVA)–collagen–hydroxyapatite (HA) composite membranes for guided tissue and bone regeneration. Materials and Methods The PVA–collagen–HA composite membrane was divided into three groups: the group without irradiation, the group with 15 kGy irradiation, and 25 kGy irradiation. Each group was tested for chemical structure with Fourier-transform infrared (FT-IR) at a wavelength of 400 to 4,000 cm−1. Tensile strength test was tested in dry and wet conditions with the standard method of American Standard Testing Mechanical (ASTM) D638, and porosity using scanning electron microscope and analyzed using ImageJ software. Degradability test immersed in a solution of phosphate-buffered saline. Data were analyzed using analysis of variance (ANOVA) and Tukey's test. Results FT-IR test before and after storage for 30 days on three media showed a stable chemical structure with the same functional groups. ANOVA analysis showed a significant difference (p < 0.05) in the dry condition (p = 0.006), Tukey's test showed a significant difference in the 15 kGy and 25 kGy irradiated groups (p = 0.005), but the groups without irradiation had no significant difference with the 15 kGy (p = 0.285) and 25 kGy (p = 0.079) irradiation groups. In wet conditions, there was no significant difference (p > 0.05) in each group (p = 373). The size of the porosity in the group without irradiation, 15 kGy irradiation, and 25 kGy irradiation showed a size of 4.65, 6.51, and 8.08 m, respectively. The degradability test showed a decrease in weight in each group, with the total weight of the membrane being completely degraded from the most degraded to the least: the groups without irradiation, 15 kGy irradiation, and 25 kGy irradiation. The ANOVA test on the degradability test shows significant (p < 0.05) in the PVA–collagen–HA composite membrane group over time intervals (p = 0.000). Tukey's post hoc test showed a significant difference (p < 0.05) after 1 week between the groups without irradiation with 15 kGy (p = 0.023). Conclusion PVA–collagen–HA composite membrane has a stable chemical structure, optimal tensile strength, porosity, and ideal degradability as guided bone regeneration and guided tissue regeneration.

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Section: Discussionmentioning

confidence: 99%

Characterization of Polyvinyl Alcohol–Collagen–Hydroxyapatite Composite Membrane from Lates calcarifer Scales for Guided Tissue and Bone Regeneration

et al. 2023

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“…The XRD test is carried out the same as the SEM-EDX test, using the best variation obtained from the bio-battery durability that has been obtained in the electrical test. XRD testing was done on 2θ with a scan range of 5º to 60º [21] and a step size of 0.0170º.…”

Section: Materials Characterizationmentioning

confidence: 99%

Utilization of Spent Coffee Grounds with Sodium Hydroxide (NaOH) as Electrolyte for Applications Bio-Battery

Haliq

Kan

Ismail

2022

DDF

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Coffee is a drink that is very well known and popular throughout the world. Currently, many coffees produce a large number of spent coffee grounds. Nearly 50% of the world produces coffee, resulting in about 6 million tons of spent coffee grounds per year. This research does on the manufacture of batteries made from spent coffee grounds with the addition of natrium hydroxide (NaOH) with a variation of dissolution of 30%, 50%, and 70% and heating at a temperature of 250°C;350°C; and 450°C. The result is a variation of heating 450°C (with the combination of all variations) resilient in the use of 52 days with 0.0405 W maximum power. Observations were made using the Scanning Electron Microscope EDX. The results of the morphology of the spent coffee grounds have a flake shape that looks like carbon and indicates the presence of porosity in the spent coffee grounds after being given a solvent with a content of Carbon (C) of 62.78%, Oxygen (O) of 30.82%, Sodium (Na) of 6.4%. Characterization using X-Ray Diffraction (XRD) At a temperature of (250°C, 70% concentration) with 2θ is 31.3268°, (350°C,70% concentration) with 2θ is 30.4838º, and (450°C, 70% concentration) with 2θ is 31.6880º. From these data, spent coffee grounds after adding NaOH could be considered an eco-friendly electrolyte material for the world.

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The Effect of Gamma Irradiation on HDPE/HA Composite as Candidate Material Dental Implant

Cited by 2 publications

References 14 publications

Characterization of Polyvinyl Alcohol–Collagen–Hydroxyapatite Composite Membrane from Lates calcarifer Scales for Guided Tissue and Bone Regeneration

Characterization of Polyvinyl Alcohol–Collagen–Hydroxyapatite Composite Membrane from Lates calcarifer Scales for Guided Tissue and Bone Regeneration

Utilization of Spent Coffee Grounds with Sodium Hydroxide (NaOH) as Electrolyte for Applications Bio-Battery

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