Investigation of some thermophysical properties of Asphodelus aestivus reinforced polyester composite

Orhan, Ramazan; Aydoğmuş, Ercan

doi:10.5505/fujece.2022.66375

Cited by 8 publications

(7 citation statements)

References 7 publications

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“…The mixture obtained is mixed at 750 rpm for 2 minutes and then poured into standard molds. After waiting 24 hours for the obtained polyester composite to cure, necessary physical tests and chemical analyzes are performed [32,33].…”

Section: Methodsmentioning

confidence: 99%

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Obtaining Pectin Reinforced Polyester Composite and Investigation of Thermophysical Properties

Karataş

Aydoğmuş

2023

EJOSAT

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In this study, pectin powder is mixed homogeneously in unsaturated polyester (UP). For the production of polyester composite, methyl ethyl ketone peroxide (MEKP) and cobalt octoate (Co Oc) are added to the mixture. The obtained composite is poured into standard molds as a gel and allowed to cure for 24 hours. Some physical and chemical properties of the composite are determined and characterization processes are carried out. Density, Shore D hardness, thermal conductivity coefficient, and thermal stability of polyester composite are examined. According to the results obtained, pectin is used as a filler in the polyester composite. There is no change in the chemical structure of the polyester polymer with Fourier transform infrared (FTIR) spectroscopy. The density of polyester composites decreases as the reinforcement of 0 wt.%, 1 wt.%, 3 wt.%, 5 wt.%, and 7 wt.% pectin powder increases. Besides, the reinforcement of pectin powder as filler reduces Shore D hardness of the polyester composite. However, it has been observed that the thermal conductivity coefficient of the polyester composite increases as the filler ratio rises. In thermal decomposition experiments of the composite, the activation energy decreases slightly as the filler ratio increases. According to the optimization results, 3 wt.% pectin powder supplementation does not adversely affect both the surface morphology and thermophysical properties of the polyester composite.

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Section: Methodsmentioning

confidence: 99%

“…Moreover, high biomass reinforcement weakens the thermal decomposition behavior of the polyester composite. The thermal stability of the composite is evaluated by calculating the activation energies found in the thermal degradation kinetics [29][30][31][32][33][34][35].…”

Section: Introductionmentioning

confidence: 99%

Obtaining Pectin Reinforced Polyester Composite and Investigation of Thermophysical Properties

Karataş

Aydoğmuş

2023

EJOSAT

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“…The thermal decomposition behavior of the composites was carried out in an inert environment (nitrogen gas) with a temperature increase rate of 10 °C/min from 25 °C to 600 °C. Activation energies of composites were calculated by Coats-Redfern using data from thermal degradation experiments (26,27). In this method, calculations were made by choosing the function (three-dimensional diffusion) with the highest correlation (R 2 ≥0.9830) coefficient.…”

Section: The Activation Energy Of Sbs Reinforced the Compositementioning

confidence: 99%

Production of SBS Reinforced Polyester Composite: Characterization of Physical and Chemical Properties

Şahal

Aydoğmuş

2023

Journal of the Turkish Chemical Society Section A: Chemistry

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In this study, dissolved styrene butadiene styrene (SBS) copolymer is homogeneously reinforced into orthophthalic unsaturated polyester (UP) resin. Polyester composite production is carried out with the help of methyl ethyl ketone peroxide (MEKP) and cobalt octoate (Co Oc) catalysts. The density, Shore D hardness, thermal conductivity coefficient, thermal stability, morphological surface structure, and chemical bond structure of the obtained composite have been examined. According to the results, SBS reinforcement decreases the density of the composite and increases the thermal conductivity coefficient. The addition of SBS at different weight ratios (1%, 3%, 5%, 7%, and 10% w/w) reduces both the hardness and thermal stability of the polyester composite. According to the test and analysis results, 5 wt.% SBS reinforced polyester composite production is determined as the optimum ratio. 7 wt.% and above SBS reinforcement negatively affect the physical and chemical properties of the obtained composite. For example, when 10 wt.% SBS reinforced composite is examined by scanning electron microscope (SEM), and irregular pores are observed in the surface morphology. Also, it is understood by Fourier transform infrared spectroscopy (FTIR) that there is a physical interaction between SBS and polyester and that no chemical bond is formed. The thermal decomposition behavior of the composite has been determined according to the decrease in the activation energy. As SBS ratio increases, it is understood that the thermal stability of the product obtained with the decrease in the activation energy of the polyester composite weakens.

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“…Especially plants with a fibrous structure are involved in the production of composites such as polyester and epoxy composite components. Biomass wastes such as sunflower stalk, apricot stone shell, corncob, Cornus alba, and Asphodelus aestivus have been reinforced into polymer composite [27][28][29][30][31][32]. The fibrous structure, elastic property, density, economy, workability, and compatibility of biomass wastes are very important.…”

Section: Introductionmentioning

confidence: 99%

Determination of thermophysical properties of Ficus elastica leaves reinforced epoxy composite

BURAN¹,

DURĞUN²,

Aydoğmuş³

et al. 2023

FUJECE

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In this study, Ficus elastica leaves have been reinforced into an epoxy composite and some physical and chemical characterization of the obtained composite is made. Ficus elastica leaves are ground between 297 and 149 microns. The biomass (Ficus elastica) prepared as a filler material is kept in sodium hydroxide (% 7 NaOH) solution for 24 hours for alkali activation. It is then washed three times with distilled water and dried in an oven at 75 °C for 3 hours. Composite production is carried out by reinforcing the prepared filler to the epoxy resin in certain proportions by mass. The effect of the biomass filler added at the rate of 0 wt.%, 1 wt.%, 3 wt.%, 5 wt.%, and 7 wt.% on the density, Shore D hardness, thermal conductivity coefficient, and activation energy of the epoxy composite is determined. According to the results obtained, the density of the epoxy composite decreases as the filler ratio in the mixture increases. Shore D hardness of epoxy composite decreases with the addition of biomass filler. The epoxy composite produced with biomass reinforcement reduces both the thermal conductivity coefficient and the activation energy. Besides, when the chemical bond structure of the obtained polyester composite is analyzed by Fourier transform infrared spectrometer (FTIR), it is seen that there is a physical interaction. According to scanning electron microscopy (SEM) images, 5 wt.% and 7 wt.% reinforcement of Ficus elastica leaves negatively affects the surface morphology of the epoxy composite.

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Investigation of some thermophysical properties of Asphodelus aestivus reinforced polyester composite

Cited by 8 publications

References 7 publications

Obtaining Pectin Reinforced Polyester Composite and Investigation of Thermophysical Properties

Obtaining Pectin Reinforced Polyester Composite and Investigation of Thermophysical Properties

Production of SBS Reinforced Polyester Composite: Characterization of Physical and Chemical Properties

Determination of thermophysical properties of Ficus elastica leaves reinforced epoxy composite

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