Nanocomposite particles with core-shell morphology IV: an efficient approach to the encapsulation of Cloisite 30B by poly (styrene-co-butyl acrylate) and preparation of its nanocomposite latex via miniemulsion polymerization

Mirzataheri, Mojgan; Mahdavian, Ali Reza; Atai, Mohammad

doi:10.1007/s00396-009-2020-5

Cited by 28 publications

(17 citation statements)

References 25 publications

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“…by adding 3 wt% of the nanoclay in the polymer matrix, droplets grow up from 153 nm to 186 nm). By attending to the DLS results of the particles, similar observation is also revealed [29,46,47]. Figure 2 presents SEC traces of the neat polymer and its nanocomposites.…”

Section: Resultssupporting

confidence: 73%

Encapsulation of organomodified montmorillonite with PMMA via in situ SR&NI ATRP in miniemulsion

et al. 2012

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Encapsulation of organomodified montmorillonite within poly (methyl methacrylate) via in situ atom transfer radical polymerization with simultaneous reverse and normal initiation system (SR&NI ATRP) was successfully performed. Miniemulsion polymerization technique has been employed for its abundant advantages to encapsulate inorganic materials. Successful SR&NI ATRP was carried out using 4,4′-dinonyl-2,2′-bipyridine (dNbPy) as a hydrophobic ligand and cetyltrimethylammonium bromide (CTAB) as an effective cationic surfactant at high temperatures. Homogeneous distribution of droplets and particles with sizes in the range of around 170 nm was evaluated by dynamic light scattering (DLS) analysis. Final monomer conversion and molecular weight were determined by gravimetry and size exclusion chromatography (SEC) respectively. By increasing nanoclay content, conversion and molecular weight of nanocomposites decreased. Meanwhile, an increase in PDI values was also observed. X-ray diffraction (XRD) analysis results display organoclay layers disordered and delaminated in the polymer matrix. Thermal stability improvement of all the nanocomposites in comparison with the neat polymer was revealed by thermogravimetric analysis (TGA). Homogeneous distribution of spherical particles with sizes in the range of 170 nm was demonstrated by scanning electron microscopy (SEM) images. These results are complied with the DLS results. Transmission electron microscopy (TEM) image display a dispersion of partially exfoliated clay stacks in the matrix of PMNM 2.

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Section: Resultssupporting

confidence: 73%

Encapsulation of organomodified montmorillonite with PMMA via in situ SR&NI ATRP in miniemulsion

et al. 2012

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“…Several patents [24,25] and articles deal with the encapsulation of colloidal metals, sol-gel type oxides (SiO 2 , TiO 2 ) and other inorganic materials [5,6,26] to give organic-inorganic hybrid dispersions, where the polymer shell is built in situ by means of conventional emulsion [5], seeded emulsion [27], miniemulsion [28], and related dispersed-phase polymerization processes [29].…”

Section: Introductionmentioning

confidence: 99%

Chemical modification of TiO2 nanoparticles as an effective way for encapsulation in polyacrylic shell via emulsion polymerization

Rahim-abadi

Mahdavian

Gharieh

et al. 2015

Progress in Organic Coatings

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“…Therefore, more surfactant entered into the MMT platelets when MMT content increased and the amount of surfactant in the medium decreased. This situation caused a decrease in the number of particles and an increase in particle size . However, this effect was not observed in Na‐MMT nanocomposites probably because of the lower d ‐space of Na‐MMT platelets and weak affinity between the Na‐MMT and the copolymer.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of poly(butyl acrylate‐co‐methyl methacrylate)/montmorillonite waterborne nanocomposite via semibatch emulsion polymerization

Vatansever

İnan

Doǧan

et al. 2015

J of Applied Polymer Sci

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Poly(butyl acrylate-co-methyl methacrylate)-montmorillonite (MMT) waterborne nanocomposites were successfully synthesized by semibatch emulsion polymerization. The syntheses of the nanocomposites were performed in presence of sodium montmorillonite (Na-MMT) and organically modified montmorillonite (O-MMT). O-MMT was used directly after the modification of Na-MMT with dimethyl dioctadecyl ammonium chloride. Both Na-MMT and O-MMT were sonified to obtain nanocomposites with 47 wt % solids and 3 wt % Na-MMT or O-MMT content. Average particle sizes of Na-MMT nanocomposites were measured as 110-150 nm while O-MMT nanocomposites were measured as 200-350 nm. Both Na-MMT and O-MMT increased thermal, mechanical, and barrier properties (water vapor and oxygen permeability) of the pristine copolymer explicitly. X-ray diffraction and transmission electron microscope studies show that exfoliated morphology was obtained. The gloss values of O-MMT nanocomposites were found to be higher than that of the pristine copolymer.

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Nanocomposite particles with core-shell morphology IV: an efficient approach to the encapsulation of Cloisite 30B by poly (styrene-co-butyl acrylate) and preparation of its nanocomposite latex via miniemulsion polymerization

Cited by 28 publications

References 25 publications

Encapsulation of organomodified montmorillonite with PMMA via in situ SR&NI ATRP in miniemulsion

Encapsulation of organomodified montmorillonite with PMMA via in situ SR&NI ATRP in miniemulsion

Chemical modification of TiO2 nanoparticles as an effective way for encapsulation in polyacrylic shell via emulsion polymerization

Synthesis of poly(butyl acrylate‐co‐methyl methacrylate)/montmorillonite waterborne nanocomposite via semibatch emulsion polymerization

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