Encapsulation of calcium carbonate by styrene polymerization

Yang, Yichuan; Kong, Xiang Zheng; Kan, Cheng You; Sun, Chang Gao

doi:10.1002/(sici)1099-1581(199901/02)10:1/2<54::aid-pat766>3.0.co;2-j

Cited by 41 publications

(3 citation statements)

References 21 publications

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“…It was reported that the encapsulation ratio and encapsulating efficiency of poly(methyl methacrylate) on CaCO 3 were much higher than that on CaCO 3 modified with stearic acid; furthermore, the hydrophobic surface of CaCO 3 nanoparticles was crucial to improve the compatibility between the CaCO 3 and methyl methacrylate monomer in emulsion system. 10 Yang et al 20 prepared PS encapsulated CaCO 3 composite by soapless emulsion polymerisation, a maximal real encapsulation ratio of 6?4% was obtained, regardless of the variations in experimental conditions.…”

Section: Introductionmentioning

confidence: 97%

Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation

Zhang

Zhao

et al. 2010

Plastics, Rubber and Composites

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An industrial calcium carbonate (CaCO 3 ) filler of large particle size was modified with polystyrene (PS) by in situ emulsion polymerisation of styrene. The structure, morphology and thermal stability of the PS/CaCO 3 composite were characterised by Fourier transform infrared spectrograph, scanning electron microscope and thermogravimetric analysis, respectively. The effects of St/ CaCO 3 ratio and particle size of CaCO 3 on the encapsulation ratio of the CaCO 3 and the viscosity of the composite in organic solvent were investigated to obtain maximal modification. The results showed that PS had covered the CaCO 3 particles, which changed the surface of CaCO 3 particles from hydrophilic to hydrophobic. The maximal decomposition temperature of the extracted PS/ CaCO 3 composite was increased by 17uC in comparison to pure PS. The viscosity of CaCO 3 particles in organic solvent decreased greatly, indicating that the effect of modification was very significant. The large size of the CaCO 3 particle exhibited high encapsulation ratio.

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Section: Introductionmentioning

confidence: 97%

Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation

Zhang

Zhao

et al. 2010

Plastics, Rubber and Composites

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“…A wide range of nanocarriers, hybrid carriers, and microcarriers were synthesized. In this regard, various techniques like emulsion polymerization, freeze-drying, intercalative polymerization, sol-gel method, hybrid latex polymerization, etc., have been deployed for the production of carriers [1][2][3][4]. However, some of these methods are multi-step physical/chemical processes wherein various chemicals are used leading to an increase in cost and generation of waste.…”

Section: Introductionmentioning

confidence: 99%

Applicability of Spray Drying Technique to Prepare Nano-Micro Carriers: A Review

2021

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Nano-micro carriers loaded with drugs and active biomolecules have gained a lot of attention in the field of health care, agriculture, and the food industry. Various methods have been explored to synthesize nano-micro carriers. However, there is still a constant search to develop a method for the preparation of a large quantity of nano-micro carriers with high loading efficiency. In this regard, spray drying could be a potential technique because of its inherent features like ease to operate, cost-effectiveness, environment-friendly, single step, and scalable. In this review, the focus is on the applicability of spray drying technique to prepare nano-micro carriers which are loaded with drugs, microorganisms, and other active molecules. Subsequently, the application and usefulness of spray-dried products in different research areas like the food industry, remediation of heavy metals and bioprocessing, and drug delivery have been presented. Furthermore, advantages, limitations, and recent developments in the area of spray drying have been discussed. This review presents a glimpse of spray drying techniques to synthesize nano-micro carriers with a wide range of applications.

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“…Recently, enormous attention has been paid to organic/inorganic and inorganic/organic hybrid nanocomposites in conformity with the fast development of nanotechnology [6][7][8][9][10][11][12][13][14]. Inorganic/organic composites are of interest in various applications such as cosmetics, ink, and paints, because of their superior mechanical properties and dispersion stability in suspension medium [15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Al(OH)3/Acrylic Copolymer Latex by Emulsion Polymerization

Park

Jeong

Lee

et al. 2010

Composite Interfaces

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The Al(OH) 3 /acrylic copolymer latexes were synthesized through the emulsion polymerization of acrylic monomers, butyl acrylate and 2-ethylhexyl acrylate in the presence of surface-functionalized Al(OH) 3 filler particles. The polymerization was stabilized by polyoxyethylene (50) nonyl phenyl ether (NP-1050, nonionic surfactant) and ammonium (POE) alkyl aryl ether sulfate (EU-S133D, anionic surfactant) to produce stable composite latexes. The improved compatibility of Al(OH) 3 surface with acrylic monomers was achieved by the modification with 3-(trimethoxysilyl) propyl methacrylate (γ -MPS). Transmission electron microscopy showed that nano-sized Al(OH) 3 particles were slightly agglomerated in the copolymer latex. When pristine Al(OH) 3 was used as a filler or γ -MPS-modified Al(OH) 3 particles were added above 30 wt% with respect to monomers, unstable latexes were obtained, which were partially precipitated out on standing for prolonged time. The flame retardation effect was not apparent with the incorporation of Al(OH) 3 in the latexes by 30 wt% as shown by LOI test.

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Encapsulation of calcium carbonate by styrene polymerization

Cited by 41 publications

References 21 publications

Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation

Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation

Applicability of Spray Drying Technique to Prepare Nano-Micro Carriers: A Review

Preparation of Al(OH)3/Acrylic Copolymer Latex by Emulsion Polymerization

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Encapsulation of calcium carbonate by styrene polymerization

Cited by 41 publications

References 21 publications

Modification of larger size CaCO3particle with polystyrene viain situemulsion polymerisation

Modification of larger size CaCO3particle with polystyrene viain situemulsion polymerisation

Applicability of Spray Drying Technique to Prepare Nano-Micro Carriers: A Review

Preparation of Al(OH)3/Acrylic Copolymer Latex by Emulsion Polymerization

Contact Info

Product

Resources

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Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation

Modification of larger size CaCO₃particle with polystyrene viain situemulsion polymerisation