Copolymerization of glycidyl methacrylate with alkyl acrylate monomers

1982 ◽  
Vol 20 (6) ◽  
pp. 1581-1585 ◽  
Author(s):  
Pradeep K. Dhal ◽  
M. S. Ramakrishna ◽  
G. N. Babu
Keyword(s):  
Glycidyl Methacrylate ◽  
Alkyl Acrylate ◽  
Acrylate Monomers

Microstructure elucidation of glycidyl methacrylate-alkyl acrylate copolymers by carbon-13 NMR spectroscopy

1984 ◽  
Vol 17 (6) ◽  
pp. 1131-1135 ◽  
Author(s):  
Pradeep K. Dhal ◽  
G. N. Babu ◽  
R. K. Nanda
Keyword(s):  
Nmr Spectroscopy ◽  
Glycidyl Methacrylate ◽  
Alkyl Acrylate

Long-Range Polar Effect on the C-ON Bond Homolysis in (tert-Butyl[1-(diethylphosphonyl)-2,2-dimethylpropyl]aminoxyl) SG1-Based Alkoxyamines

2004 ◽  
Vol 69 (12) ◽  
pp. 2223-2238 ◽  
Author(s):  
Denis Bertin ◽  
Didier Gigmes ◽  
Sylvain R. A. Marque ◽  
Stephan Milardo ◽  
Jérôme Peri ◽  
...  
Keyword(s):  
Radical Polymerization ◽  
Rate Constant ◽  
Rate Constants ◽  
Bond Cleavage ◽  
Nitroxyl Radicals ◽  
Cleavage Rate ◽  
Factors Influencing ◽  
Alkyl Acrylate ◽  
Bond Homolysis ◽  
Acrylate Monomers

Alkoxyamines and persistent nitroxyl radicals are important regulators of nitroxide-mediated radical polymerization. Because the polymerization times decrease with the increasing rate constant of the homolysis of the C-ON bond between the polymer chain and the nitroxyl moiety, the factors influencing the cleavage rate constant are of considerable interest. Because alkyl acrylate monomers are among the most used in polymerization, we present the measures of the rate constants (kd) of the C-ON bond cleavage for new SG1 based alkoxyamine models containing para-substituted aromatic acrylates (4-XC6H4OC(O)C(Me)H-SG1). It appears that the values of kd increase with the electron-withdrawing properties of the para-substituent groups (4-X) of the ester SG1-based alkoxyamines.

Reesterification of ethyl acetate by propanol catalysed by glycidyl methacrylate copolymers containing sulphonic acid groups

1981 ◽  
Vol 46 (8) ◽  
pp. 1941-1946 ◽  
Author(s):  
Karel Setínek
Keyword(s):  
Liquid Phase ◽  
Ethyl Acetate ◽  
Kinetic Study ◽  
Gas Phase ◽  
Nonlinear Regression ◽  
Kinetic Data ◽  
Glycidyl Methacrylate ◽  
Kinetic Equations ◽  
Methacrylate Copolymers ◽  
Styrene Divinylbenzene

A series of differently crosslinked macroporous 2,3-epoxypropyl methacrylate-ethylenedimethacrylate copolymers with chemically bonded propylsulphonic acid groups were used as catalysts for the kinetic study of reesterification of ethyl acetate by n-propanol in the liquid phase at 52 °C and in the gas phase at 90 °C. Analysis of kinetic data by the method of nonlinear regression for a series of equations of the Langmuir-Hinshelwood type showed that kinetic equations which describe best the course of the reaction are the same as for the earlier studied sulphonated macroporous styrene-divinylbenzene copolymers. Compared types of catalysts differ, however, in the dependence of their activity on the degree of crosslinking of the copolymer used.

Complexes of copper(II) and nickel(II) with a Schiff base bonded to a polymeric support

1983 ◽  
Vol 48 (7) ◽  
pp. 2021-2027 ◽  
Author(s):  
Eliška Kálalová ◽  
Olga Populová ◽  
Štěpánka Štokrová ◽  
Pavel Stopka
Keyword(s):  
Magnetic Properties ◽  
Schiff Base ◽  
Coordination Sphere ◽  
Polymer Matrix ◽  
Glycidyl Methacrylate ◽  
Epr Spectra ◽  
Polymeric Support ◽  
Tetrahedral Configuration ◽  
Paramagnetic Complexes

Copper(II) and nickel(II) ions were bonded in complexes of salicylideneimine type on a glycidyl methacrylate-ethylenedimethacrylate copolymer. The geometry of the complexes on the polymer was studied by measuring their magnetic properties, EPR spectra, and ultraviolet-visible spectra.Only paramagnetic complexes possessing a pseudo-tetrahedral configuration were found. The effect of the polymer matrix and of the immobility of the bonded Schiff base on the distortion of the coordination sphere of the central ion is discussed.

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