Control of particle size and carboxyl group distribution in soap-free emulsion copolymerization of methyl methacrylate-ethyl acrylate-acrylic acid

2004 ◽  
Vol 92 (1) ◽  
pp. 433-438 ◽  
Author(s):  
Kai Kang ◽  
Cheng You Kan ◽  
Yi Du ◽  
De Shan Liu
Keyword(s):  
Particle Size ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Ethyl Acrylate ◽  
Carboxyl Group ◽  
Emulsion Copolymerization ◽  
Group Distribution

Carboxyl functionalized poly(methyl methacrylate-acrylic acid-ethylene glycol dimethacrylate) copolymer particles and their amination with amine-nucleophiles

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Hasan Ahmad ◽  
Md. Emtiaz Hossain ◽  
M. Abdur Rahman ◽  
M. Mahbubor Rahman ◽  
M. A. Jalil Miah ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Methyl Methacrylate ◽  
Ethylene Glycol Dimethacrylate ◽  
Carboxyl Groups ◽  
Carboxyl Group ◽  
Glycol Dimethacrylate ◽  
Emulsion Copolymerization ◽  
Poly Methyl Methacrylate ◽  
Ftir Spectral Analysis

AbstractPoly(methyl methacrylate-acrylic acid-ethylene glycol dimethacrylate) copolymer particles abbreviated as P(MMA-AA-EGDM) copolymer particles were prepared by soap-free emulsion copolymerization. The concentration of carboxyl group on/near the surface of particles increased with the increase in acrylic acid (AA) content in the recipe. The carboxyl groups were reacted with amine nucleophiles such ethylene diamine and 1,6-diaminohexane through preactivation with dicyclohexyl carbodiimide as a coupling agent. The modified particles were characterized by electron micrographs and FTIR spectral analysis. Adsorption behaviours of some biomolecules were measured to have idea about=-0 the polarity of the particles surface

Genotoxicity of acrylic acid, methyl acrylate, ethyl acrylate, methyl methacrylate, and ethyl methacrylate in l5178y mouse lymphoma cells

1988 ◽  
Vol 11 (1) ◽  
pp. 49-63 ◽  
Author(s):  
Martha M. Moore ◽  
Amanda Amtower ◽  
Carolyn L. Doerr ◽  
Karen H. Brock ◽  
Kerry L. Dearfield
Keyword(s):  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Methyl Acrylate ◽  
Ethyl Acrylate ◽  
Lymphoma Cells ◽  
Ethyl Methacrylate ◽  
Acid Methyl ◽  
Mouse Lymphoma Cells ◽  
Mouse Lymphoma

Miniemulsion Polymerization Stabilized by a Well-Defined, Amphiphilic Gradient Poly(styrene-co-acrylic acid) Copolymer

2006 ◽  
Vol 59 (8) ◽  
pp. 544 ◽  
Author(s):  
Catherine Lefay ◽  
Maud Save ◽  
Bernadette Charleux ◽  
Stéphanie Magnet
Keyword(s):  
Particle Size ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Butyl Acrylate ◽  
Miniemulsion Polymerization ◽  
Radical Copolymerization ◽  
Water Soluble ◽  
Size Distributions ◽  
Particle Size Distributions ◽  
Free Radical Copolymerization

The nitroxide-mediated controlled free-radical copolymerization of styrene (St) and acrylic acid (AA) was used to synthesize a well-defined poly(St30%-co-AA70%) amphiphilic gradient copolymer. The latter proved to be an efficient stabilizer in the 45 wt.-% solids content, batch miniemulsion polymerizations of St and of mixtures of methyl methacrylate/n-butyl acrylate (35/65 w/w). With 2,2´-azobisisobutyronitrile as an oil-soluble initiator, polystyrene latexes with a very narrow particle distribution were obtained, whereas the water-soluble initiator, potassium persulfate, led to broad, multimodal particle size distributions. Such results were explained by the contribution of two nucleation mechanisms: droplet nucleation and homogeneous nucleation. In contrast, the poly(methyl methacrylate-co-n-butyl acrylate) latexes exhibited larger particle size and narrower particle size distributions with persulfate initiator, than the polystyrene latexes.

scholarly journals Preparation and characterization of attapulgite microcapsules coated with acrylic polymer

Polimery ◽  
2021 ◽  
Vol 66 (2) ◽  
pp. 112-118
Author(s):  
Lining Song ◽  
Zhenxu Li ◽  
Lina Yang ◽  
Ning Wang ◽  
Jie Zhao ◽  
...  
Keyword(s):  
Particle Size ◽  
Acrylic Acid ◽  
Methyl Methacrylate ◽  
Flame Retardant ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Core Shell ◽  
Shell Material ◽  
Poly Methyl Methacrylate ◽  
Silane Coupling

The attapulgite core-shell microcapsule type flame retardant was prepared by in situ polymerization. Attapulgite (ATP) was used as a core material with poly(methyl methacrylate) (PMMA) and poly(methyl methacrylate-co-acrylic acid) [P(MMA-co-AA)] as shell materials. The attapulgite was modified by the silane coupling agent. The effects of different shell materials and modification methods on the structure and properties of attapulgite core-shell microcapsules were studied by scanning electron microscopy, particle size distribution, infrared analysis and thermogravimetric analysis. The results showed that the coating effect was best when the amount of silane coupling agent was 1% of the attapulgite mass. The particle size of the microcapsule prepared with PMMA as shell material was uniform and the coating efficiency was better. After the copolymerization of acrylic acid (AA) in MMA shell materials, the cladding efficiency was improved. At the same time, the thermal decomposition temperature of the microcapsule shell material was greatly reduced, which is beneficial to the performance of attapulgite flame retardant.

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