Copolymerization of ethyl methacrylate with N-(3- or 4-halogenphenyl)maleimides: The monomer reactivity ratios

1999 ◽  
Vol 74 (12) ◽  
pp. 2924
Author(s):  
Anna Ryttel
Keyword(s):  
Reactivity Ratios ◽  
Monomer Reactivity Ratios ◽  
Ethyl Methacrylate

scholarly journals Copolymerization of 4-Acetylphenyl Methacrylate with Ethyl Methacrylate: Synthesis, Characterization, Monomer Reactivity Ratios, and Thermal Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-10
Author(s):  
Gamze Barim ◽  
Mustafa Gokhun Yayla
Keyword(s):  
Thermal Stability ◽  
Nonlinear Least Squares ◽  
Reactivity Ratios ◽  
Spectroscopic Techniques ◽  
Monomer Reactivity Ratios ◽  
Scanning Calorimetry ◽  
Ethyl Methacrylate ◽  
Wide Range ◽  
Monomer Feed ◽  
Copolymer Poly

Methacrylates have high glass transition temperature (Tg) values and high thermal stability. A new methacrylate copolymer, poly(4-acetylphenyl methacrylate-co-ethyl methacrylate) (APMA-co-EMA), was synthesized. The thermal behaviors of copolymers were investigated by differential scanning calorimetry and thermogravimetric analysis. They behaved as new single polymers with singleTg’s and the thermal stability of the copolymers increased with increasing 4-acetylphenyl methacrylate (APMA) fraction, leading to the manufacture of copolymers with desiredTgvalues. Structure and composition of copolymers for a wide range of monomer feed ratios were determined by Fourier transform infrared (FT-IR) and1H-nuclear magnetic resonance (1H-NMR) spectroscopic techniques. Copolymerization reactions were continued up to 40% conversions. The monomer reactivity ratios for copolymer system were determined by the Kelen-Tüdös (ra(APMA)=0.81;rb(EMA)=0.61) and extended Kelen-Tüdös (ra=0.77;rb=0.54) methods and a nonlinear least squares (ra=0.74;rb=0.49) method.

scholarly journals Copolymerization Parameters of 2-(N-Phthalimido) ethyl Methacrylate with Different Vinyl Monomers

2011 ◽  
Vol 8 (1) ◽  
pp. 17-24
Author(s):  
A. A. Aly ◽  
H. M. Ammar ◽  
A.A Khalil
Keyword(s):  
Antimicrobial Activity ◽  
Ir Spectroscopy ◽  
Methacrylic Acid ◽  
Methyl Acrylate ◽  
Ethyl Acrylate ◽  
Reactivity Ratios ◽  
Vinyl Monomers ◽  
Monomer Reactivity Ratios ◽  
Ethyl Methacrylate ◽  
Bacteria And Fungi

2-(N-phthalimido)ethyl methacrylate was prepared by the reaction of methacrylic acid with N-(2-hydroxyethyl)phthalimide in presence of N,N?-dicyclohexylcarbodiimide. The monomer reactivity ratios for copolymerization reactions of 2-(N-phthalimido)ethyl methacrylate with methyl acrylate, ethyl acrylate, butyl acrylate and styrene, respectively, in solution with azobisisobutyronitrile (AIBN) as initiator, were estimated by nitrogen analysis. The structure of the copolymers was investigated by IR spectroscopy. The Q and e values for 2-(N-phthalimido)ethyl methacrylate were calculated. Some of the synthesized polymers were tested for their antimicrobial activity against bacteria and fungi.

Copolymerization of 2-[3-(2H-Benzotriazol-2-yl)-4-hydroxyphenyl]ethyl Methacrylate with Styrene

2007 ◽  
Vol 72 (9) ◽  
pp. 1244-1254
Author(s):  
Martin Schovanec ◽  
Jiří Horálek ◽  
Štěpán Podzimek ◽  
Jaromír Šňupárek
Keyword(s):  
Radical Copolymerization ◽  
Batch Experiment ◽  
Reactivity Ratios ◽  
Monomer Reactivity Ratios ◽  
Ethyl Methacrylate

Radical copolymerization of 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate (M1) with styrene (M2) at 70 °C in 1,4-dioxane was investigated and the reactivity ratios were determined. The copolymerization was carried out as batch copolymerization to a low conversion or as copolymerization with a continuous addition of monomers at higher instantaneous conversion. The monomer reactivity ratios of the copolymerizable UV stabilizer 2-[3-(2H-benzotriazol-2-yl)-4-hydroxyphenyl]ethyl methacrylate with styrene were determined using the Finemann-Ross plot for both copolymeration techniques. The estimated reactivity ratios were r1 = 0.588 and r2 = 0.6 for the technique of continuous addition of monomers and r1 = 0.462 and r2 = 0.476 and for the batch experiment. The copolymerization exhibited an azeotrope at f1 = 0.507, thus a copolymer with microstructure close to the alternating one was formed at this ratio of comonomers.

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