Synthesis of polyacrylonitrile based nanoparticles via aqueous dispersion polymerization

Lee, Jung Min; Kang, Sung Goon; Park, Soo‐Jin

doi:10.1007/bf03218620

Cited by 17 publications

(7 citation statements)

References 11 publications

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“…As the copolymer concentration increased up to 10%, the size of P(AN-co-MMA) nanosphere decreased. This could be explained as previously reported; ''nanospheres decreased due to the favorable formation of more primary nuclei in the early stage of polymerization'' Lee et al (2009). Fig.…”

Section: Copolymerization Processmentioning

confidence: 64%

“…As usual, spherical particles are obtained. The images show the successful synthesis of copolymer nanoparticles, as the polymerization time increased, the size of P(AN-co-MMA) nanospheres decreased due to the favorable formation of more primary nuclei in the early stage of polymerization (Lee et al, 2009). Fig.…”

Section: Effect Of the Polymerization Timementioning

confidence: 94%

“…In the same context, Boguslavsky et al (2005) have reported the preparations of polyacrylonitrile nanoparticles using dispersion/emulsion polymerization method (Boguslavsky et al, 2005). On the other hand, Lee et al (2009) have reported the synthesis of poly(AN-co-IA-co-MA) nanoparticle using acrylonitrile, itaconic acid, and methyl acrylate via aqueous dispersion polymerization using hydrophilic PVA in a water/N,N-dimethylformamide mixture media. Highly dispersed and uniform polyacrylonitrile microspheres have been prepared using soapless emulsion polymerization in water initiated by KPS (Guangzhi et al, 2011).…”

Section: Introductionmentioning

confidence: 96%

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Poly (acrylonitrile-co-methyl methacrylate) nanoparticles: I. Preparation and characterization

Eldin

El-Aassar

Elzatahry

et al. 2017

Arabian Journal of Chemistry

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This work concerns the preparation and characterization of poly (acrylonitrile-co-methyl methacrylate) Copolymer, P(AN-co-MMA), nano-particles using precipitation polymerization technique. Potassium per-sulfate redox initiation system was used to perform polymerization process in an alcoholic aqueous system. The impact of different polymerization conditions such as comonomer concentration and ratio, polymerization time, polymerization temperatures, initiator concentration and co-solvent composition on the polymerization yield and particle size was studied. Maximum polymerization yield, 70%, was obtained with MMA:AN (90%:10%) comonomer composition. Particle sizes ranging from 16 nm to 1483 nm were obtained and controlled by variation of polymerization conditions. The co-polymerization process was approved by FT-IR and TGA analysis. The copolymer composition was investigated by nitrogen content analysis. Copolymers with a progressive percentage of PAN show thermal stabilities close to PAN Homopolymer. SEM photographs prove spherical structure of the produced copolymers. The investigated system shows promising future in the preparation of nanoparticles from comonomers without using emulsifiers or dispersive agents. ª 2014 Production and hosting by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).

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Section: Copolymerization Processmentioning

confidence: 64%

Section: Effect Of the Polymerization Timementioning

confidence: 94%

Section: Introductionmentioning

confidence: 96%

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Poly (acrylonitrile-co-methyl methacrylate) nanoparticles: I. Preparation and characterization

Eldin

El-Aassar

Elzatahry

et al. 2017

Arabian Journal of Chemistry

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“…The reaction is undertaken in a carefully controlled acid environment, because the bisulfite ion and the Fe 3+ ion formed by oxidation are soluble [4] . Several works reported the used reaction temperature at 60°C for polyacrylonitrile copolymer polymerization [18][19][20] . After overflowing the suspension, an aqueous slurry of polymer particles is obtained and mixed with tetrasodium ethylene diamine tetraacetic acid (EDTA) to stop redox radical initiation and stop the polymerization [2] .…”

Section: Suspension Polymerization-redox Systemmentioning

confidence: 99%

“…Unreacted monomers, through a countercurrent flow of steam from the bottom of the column (5), are condensed (6) to reuse in the polymerization process. The aqueous suspension is collected in a reservoir and transferred for later steps (washing, filtration and drying) [2,[15][16][17][18][19] . Table 1.…”

Section: Suspension Polymerization-redox Systemmentioning

confidence: 99%

Synthesis and Thermal Behavior of Polyacrylonitrile/Vinylidene Chloride Copolymer

et al. 2014

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Polyacrylonitrile fiber encompasses a broad range of products based on acrylonitrile (AN) which is readily copolymerized with a wide range of ethylenic unsaturated monomers giving rise to polymers with different characteristics and applications. Such products can be designed for cost-effective, flame and heat resistant solutions for the textile industry, aircraft and automotive markets. In the present work acrylonitrile was copolymerized with vinylidene chloride (VDC) by conventional suspension polymerization process via redox system, with an initial content of 10%/mass of the VDC monomer. The copolymer average molecular weight was obtained by Gel Permeation Chromatography (GPC) and by intrinsic viscosity analysis. To control the polymerization process continuously, qualitative and quantitative analysis of the chloride content in the PAN AN/VDC copolymer structure was accomplished by using X-ray fluorescence and potentiometric titration techniques. A good correlation was found between these two techniques, leading to a straightforward verification of VDC in the polymer structure. The thermal behavior of PAN AN/VDC copolymer was performed by Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA). The results showed that VDC monomers exhibited a nearly stoichiometric reaction with acrylonitrile, copolymerizing about 90% of its initial mass. VDC changed significantly the polyacrylonitrile thermal behavior, decreasing the polymer degradation temperature by about 40-50°C.

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Polymerization and characterization of novel poly(acrylonitrile‐co‐styrene/pyrrole) nanoparticles: A comparison between microwave and conventional method

El-Aassar

Fakhry

2017

Polymers for Advanced Techs

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In this study, poly(acrylonitrile-co-styrene/pyrrole) or poly(AN-co-ST/Py) copolymer was successfully synthesized using microwave preparation technique, and its comparison with the conventional heating method is investigated. Different polymerization factors affecting on the preparation conditions and conversion yield such as monomer concentration, comonomers ratio, initiator concentration, cosolvent ratio, cosolvent type, polymerization temperature, and polymerization time have a considerable effect on the conversion yield %, functional groups, and molecular weight. The copolymerization process was approved by Fourier transform infrared, thermogravimetric analysis, 1 H NMR spectroscopy, and gel permeation chromatography. The formation of poly(AN-co-ST/Py) nanoparticles was confirmed by SEM, and their possible formation mechanisms were also proposed. The SEM images of poly(AN-co-ST/Py) prepared by the microwave method showed that the synthesized copolymer had spikes or rods with spherical structure of the produced copolymers than the poly(AN-co-ST/Py) nanoparticles prepared by the conventional heating method. Microwave method showed advantages for the produced copolymers compared to that prepared by conventional method, where it can offer a copolymer in short time, high yield, and more thermally stable copolymers, rather than conventional method.

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Synthesis of polyacrylonitrile based nanoparticles via aqueous dispersion polymerization

Cited by 17 publications

References 11 publications

Poly (acrylonitrile-co-methyl methacrylate) nanoparticles: I. Preparation and characterization

Poly (acrylonitrile-co-methyl methacrylate) nanoparticles: I. Preparation and characterization

Synthesis and Thermal Behavior of Polyacrylonitrile/Vinylidene Chloride Copolymer

Polymerization and characterization of novel poly(acrylonitrile‐co‐styrene/pyrrole) nanoparticles: A comparison between microwave and conventional method

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