Effects of surfactants on CaCO3 spheres prepared by interfacial reaction method

Nakahara, Yoshio; Mizuguchi, Masaaki; Miyata, Kenichi

doi:10.1016/0021-9797(79)90298-4

Cited by 33 publications

(28 citation statements)

References 13 publications

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“…The preparation of CaCO 3 microcapsules has been already reported briefly in our previous paper [27]. In this paper, we wish to show the details of these materials, which were not mentioned before.…”

Section: Preparation Of Vacant Caco 3 Microcapsulesmentioning

confidence: 97%

“…Vacant CaCO 3 microcapsules were obtained by our described procedure using the interfacial reaction method [27]. A typical preparation procedure is described as follows.…”

Section: Vacant Caco 3 Microcapsulesmentioning

confidence: 99%

“…We have already succeeded the preparation of calcium carbonate (CaCO 3 ) microcapsules (spherical hollow particles) by the interfacial reaction method [27]. CaCO 3 is also a biocompatible and biodegradable inorganic material.…”

Section: Introductionmentioning

confidence: 99%

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Calcium carbonate microcapsules encapsulating biomacromolecules

Fujiwara

Shiokawa

Morigaki

et al. 2008

Chemical Engineering Journal

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Section: Preparation Of Vacant Caco 3 Microcapsulesmentioning

confidence: 97%

“…Vacant CaCO 3 microcapsules were obtained by our described procedure using the interfacial reaction method [27]. A typical preparation procedure is described as follows.…”

Section: Vacant Caco 3 Microcapsulesmentioning

confidence: 99%

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Calcium carbonate microcapsules encapsulating biomacromolecules

Fujiwara

Shiokawa

Morigaki

et al. 2008

Chemical Engineering Journal

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“…Firstly, the spherical CaCO 3 was prepared by CMC as a template . Then the Eu(DBM‐Si) 3 has been successfully synthesized by our previously reported method, which can be graft‐modified with the hydroxyl groups on the surface of CaCO 3 endowing it fluorescent properties.…”

Section: Methodsmentioning

confidence: 99%

Quantitative evaluation of fillers dispersion state in CaCO₃/polypropylene composites through visualization and fractal analysis

Kang

Yuan

et al. 2019

Polymer Composites

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The dispersion state of fillers in the polymer matrix is an important factor to determine the properties of the polymer composites. Here, a new method for the accurate quantitative evaluation dispersion state of fillers through three‐dimensional (3D) visualization and fractal analysis is reported. First of all, the data model of the dispersed state of the fillers is obtained through 3D visualization techniques. Then the fractal dimensions of different samples are obtained by software based on the fractal theory. As the filler increases, the fractal dimension is firstly decreases to a minimum and then increases. Under this extreme point condition, the theoretical dispersion state of the fillers is uniform. The accurate quantitative description of the dispersion state provides a new basis for establishing the relationship between the dispersion state and the mechanical properties of the fillers in various composites.

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“…The zeta-potentials of suspensions of NPOS and Zn-NPOS with PGMS were −17.2 and −15.9 mV, respectively. Nakahara et al (1978) reported that CaCO 3 was stable in hydrophilic emulsifier. In this study, the samples emulsified with the higher hydrophilic emulsifiers PGMS (HLB 15.8) and PSML (HLB 16.7) showed higher stability because the surfactant in the outer aqueous phase was effective to ensure stability (Pays et al, 2001).…”

Section: Optimization Of Dispersible Oyster Shellmentioning

confidence: 98%

Physicochemical and sensory properties of milk supplemented with dispersible nanopowdered oyster shell during storage

Lee

Ahn

Chang

et al. 2015

Journal of Dairy Science

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The current study was carried out to investigate the dispersibility of powdered oyster shell (POS), nanopowdered oyster shell (NPOS), and Zn-activated nanopowdered oyster shell (Zn-NPOS) in milk and to determine effects of adding oyster shell on the physicochemical and sensory properties of milk during storage at 4°C for 16 d. To ensure dispersibility, 10% (wt/vol) oyster shell was added to distilled water and stirred at 800 rpm for 2 h, and then the emulsifier 0.5% polyglycerol monostearate (PGMS) was added and stirred continually for 24 h. The particle sizes of POS, NPOS, and Zn-NPOS were 180 μm, 389 nm, and 257 nm, respectively. The pH values of all milk samples ranged from 6.62 to 6.88 during storage, and the zeta-potential of milks with NPOS and Zn-NPOS added were more stable than that of milk with POS in low concentrations (0.5 and 1.0%, vol/vol) during storage. The L and a color values of the milks were not significantly influenced by treatment; however, the b value (yellow-blue color) significantly increased during storage after adding POS, NPOS, or Zn-NPOS. Sensory analysis revealed that sedimentation score significantly increased with POS-supplemented milk, but the NPOS-and Zn-NPOS-supplemented milks did not show sedimentation until after 8 d of storage. Based on the data obtained, we conclude that dispersible nanosized oyster shell at concentrations of 0.5 and 1.0% (vol/vol) could be supplemented to milk without significant adverse effects on physicochemical and sensory properties.

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Effects of surfactants on CaCO3 spheres prepared by interfacial reaction method

Cited by 33 publications

References 13 publications

Calcium carbonate microcapsules encapsulating biomacromolecules

Calcium carbonate microcapsules encapsulating biomacromolecules

Quantitative evaluation of fillers dispersion state in CaCO₃/polypropylene composites through visualization and fractal analysis

Physicochemical and sensory properties of milk supplemented with dispersible nanopowdered oyster shell during storage

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Effects of surfactants on CaCO3 spheres prepared by interfacial reaction method

Cited by 33 publications

References 13 publications

Calcium carbonate microcapsules encapsulating biomacromolecules

Calcium carbonate microcapsules encapsulating biomacromolecules

Quantitative evaluation of fillers dispersion state in CaCO3/polypropylene composites through visualization and fractal analysis

Physicochemical and sensory properties of milk supplemented with dispersible nanopowdered oyster shell during storage

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Product

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Quantitative evaluation of fillers dispersion state in CaCO₃/polypropylene composites through visualization and fractal analysis