Poly(methyl methacrylate)/polyacrylonitrile composite latex particles with a novel surface morphology

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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“…22(c). This result is consistent with that reported by Liao et al (2009) andShi et al (2005). As shown in Fig.…”

Section: Tga Analysissupporting

confidence: 94%

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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“…Table 2 shows the effect of water content (wt%) in the feed on the equilibrium swelling degree of the above membrane at 40 • C. It can be clearly seen that swelling degree of the membrane was very low and hardly changes with changing feed temperature or feed composition, indicating that both the structure of the membrane and free volume in the membrane were quite stable in spite of the change in feed temperature or feed composition. This un-swelling behavior of the PAN-b-PEG-b-PAN membrane was probably caused by a micro-phase separated structure and low PEG weight content in the PAN-b-PEG-b-PAN membrane, in which polyacrylonitrile was a matrix phase with zero co-solubility to water and PEG was dispersed as domains [22]. The same influence of micro-phase separation on swelling behavior was also found in other works [23].…”

Section: Swelling Behavior Of Pan-b-peg-b-pan Membranesupporting

confidence: 78%

Studies on pervaporation characteristics of polyacrylonitrile–b-poly(ethylene glycol)–b-polyacrylonitrile block copolymer membrane for dehydration of aqueous acetone solutions

Zhao¹,

Qian²,

An³

et al. 2008

Journal of Membrane Science

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“…Shi et al12 reported that their prepared composite particle size increased with increasing AN amount for the batch mode polymerization during the second stage. The same phenomenon was found for the dropwise mode polymerization.…”

Section: Resultsmentioning

confidence: 99%

“…One was smooth, and another was rambutan‐like. The reason was the addition amount of AN monomer 12. Here, we report on PMMA/PAN particles prepared by both the batch and dropwise addition mode of the AN monomer.…”

Section: Introductionmentioning

confidence: 97%

Emulsifier‐free emulsion polymerization of acrylonitrile in the presence of poly(methyl methacrylate) seed particles: Influence of the addition mode on the surface morphology

Yang

Liu

Jia

et al. 2008

J of Applied Polymer Sci

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Acrylonitrile (AN) was polymerized in the presence of poly(methyl methacrylate) (PMMA) seed latex by both the batch and dropwise addition modes. The two addition modes both led to PMMA/polyacrylonitrile (PAN) composite particles with a core/shell structure with PMMA as the core and PAN as the shell. The shell thickness could be adjusted by a change in the amount of the second-stage AN monomer relative to the PMMA seed polymer. However, the surface morphologies of the composite polymers were quite different, which showed a rambutan-like batch mode and an urchinlike dropwise mode. The reason was considered as the different precipitation mechanisms of PAN small-particle precipitation for the batch mode and linear PAN segment growth for the dropwise mode.

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Poly(methyl methacrylate)/polyacrylonitrile composite latex particles with a novel surface morphology

Cited by 29 publications

References 16 publications

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

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

Studies on pervaporation characteristics of polyacrylonitrile–b-poly(ethylene glycol)–b-polyacrylonitrile block copolymer membrane for dehydration of aqueous acetone solutions

Emulsifier‐free emulsion polymerization of acrylonitrile in the presence of poly(methyl methacrylate) seed particles: Influence of the addition mode on the surface morphology

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