Synthesis and Characterization of Precipitated CaCO3 from Ankerite Prepared by Bubbling Method

Munawaroh, Fatimatul; Muharrami, Laila Khamsatul; Triwikantoro, T.; Arifin, Zaenal

doi:10.18502/keg.v1i2.4435

Cited by 15 publications

(11 citation statements)

References 19 publications

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“…The roughness parameters R q and R a was 0.83 and 0.48 nm, respectively. The dimension of CD particle depends on the temperature and processing time 36 and the results showed both the parameters were optimum for the formation of finer particles, in the present study.…”

Section: Morphological Characteristicssupporting

confidence: 61%

A green extraction process of nanocarbon dots from prawn shells, and its reinforcement in epoxy polymers

Ashraf

Anju

Binsi

et al. 2022

J of Applied Polymer Sci

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Exoskeletons of prawn, shrimp, and crab discarded as waste are rich sources of inorganic and organic materials. Currently, these discards are mainly utilized for the extraction of chitin and less attention is paid to the recovery of other organic constituents present in the exoskeletons. The present study aimed to synthesize nano carbon dot (CD) and chitin from prawn shell, and utilization of CD as an additive to epoxy polymers to obtain a corrosion resistant polymer coating. Nano CDs were synthesized through a hydrothermal carbonization process and the characteristics were evaluated using spectrophotometric, fluorescence, and Fourier transform infrared spectroscopy studies. The CD reinforced bisphenol epoxy polymer composite coated over boat building steel exhibited the least defect, which in turn imparted the highest polarization resistance with the lowest capacitance. Chemical and morphological data of epoxy polymer composite highlighted the interaction of NH2 present in CD with polymer matrix. The functional group NH2 from CD synergistically acted along with hardener to form a pore free epoxy coating. Hydrothermal process of prawn shell enabled to extract chitin as evidenced by their spectral signature peaks. This study gave two economically important products through a green synthesis protocol.

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Section: Morphological Characteristicssupporting

confidence: 61%

A green extraction process of nanocarbon dots from prawn shells, and its reinforcement in epoxy polymers

Ashraf

Anju

Binsi

et al. 2022

J of Applied Polymer Sci

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“…Form FTIR qualitative analysis, and by comparing our results with other studies, the obtained vibration bonds values are in good agreement with results carried out in the literature [45,46,47] which indicates that the most bands are attributed to quartz and calcite. Fig.…”

Section: Fourier-transform Infrared (Ftir) Analysissupporting

confidence: 91%

“…3 indicate the presence of quartz in all rock samples. The characteristic peaks between 1081.85-1096.83 cm −1 and 2357.08-2361.79 cm −1 indicating the emergence of calcite in the whole samples except OH7 the last peaks were absent [45,48]. The element concentrations obtained for the seven sandstones (OH1-OH7) are summarized in the Table 2.…”

Section: Fourier-transform Infrared (Ftir) Analysismentioning

confidence: 99%

Development And Synthesis Of Piezoelectric Materials Based On Natural Resources (Rocks)

Mebrouki

Zenkhri

Tlili

et al. 2022

Preprint

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This study reports the chemical composition of seven sandstones (OH1-OH7) from Ouargla desert in south-east of Algeria, then the investigation of these samples to be used as precursor for the hydrothermal synthetesis of piezoelectric mater in thin films form. Fourier-transform infrared (FT-IR) spectra shows the characteristic vibration bond peaks for the seven samples documenting the presence of quartz and calcite. Moreover, chemical composition of Ouargla sandstones has been determined by energy dispersive X-ray (EDS) and X-ray diffraction (XRD) allowed mainly a composition avrage major of 86.86 % α-quartz (SiO2) and minor of 13.14 % calcite (CaCO3). The EDS analysis revealed the presence of solid solution in the crystal lattice of six samples of the sandstones with trace amounts of Fe, Al, Ag, Na, K. The aqua regia digestion method was used to extract silicon and calcium from the rock samples in to synthesis the thin films. From (FT-IR), (SEM-EDS) and (XRD) we show that synthesis thin films at different temperture are composed mainly of 90.66 % calcite (CaCO3)/9.33 % α-quartz (SiO2) and 69 % α-quartz (SiO2)/31% Sodium Chloride (NaCl). The crystallite sizes of the sandstones were calculated and estimated to be nanometric, in contrast the thin films are not nanometric.

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“…For the former, the bands at ca. 700, 900 and 1400 cm − 1 attributed to inorganic carbonate, were noted (Munawaroh et al 2018). That indicated that calcium carbonate, i.e.…”

Section: Prepared Acrylic Psamentioning

confidence: 92%

An effect of carboxymethyl starch addition on adhesion to paper of water-soluble pressure-sensitive adhesive

Wilpiszewska

Czech

2021

Preprint

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Introducing biopolymer derivative, i.e. carboxymethyl starch into pressure-sensitive adhesives for paper industry has been proposed. Obtained adhesives were transferred onto water-dispersible paper carrier giving repulpable double-sided splicing tape. The effect of carboxymethyl starch degree of substitution on essential adhesive properties: tack, peel adhesion, as well as shear strength for steel and various papers has been tested. Additionally, the solubility in water and alkaline medium has been evaluated. The highest tack and peel adhesion increase was reported for PSA containing CMS with degree of substitution DS 0.86, to fax paper. Moreover, the dynamic shear strength test imitating the shear conditions in paper processing revealed, that the highest values of this parameters exhibited the system with 15 wt.% CMS DS 0.86. For this system the shortest water-dissolving times as well as at elevated pH were noted: 314 s and 60 s, respectively.

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Synthesis and Characterization of Precipitated CaCO3 from Ankerite Prepared by Bubbling Method

Abstract: .

Cited by 15 publications

References 19 publications

A green extraction process of nanocarbon dots from prawn shells, and its reinforcement in epoxy polymers

A green extraction process of nanocarbon dots from prawn shells, and its reinforcement in epoxy polymers

Development And Synthesis Of Piezoelectric Materials Based On Natural Resources (Rocks)

An effect of carboxymethyl starch addition on adhesion to paper of water-soluble pressure-sensitive adhesive

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