Comparison of the kinetics of conventional and microwave methyl methacrylate polymerization

2007 ◽  
Vol 104 (3) ◽  
pp. 1775-1782 ◽  
Author(s):  
Jelena Jovanovic ◽  
Borivoj Adnadjevic
Keyword(s):  
Methyl Methacrylate ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

Kinetics of methyl methacrylate polymerization initiated with n,n ′-bis[(4-t -butylazo-4-cyanovaleryl)-oxyethyl]-azo-bis-formamide

1990 ◽  
Vol 23 (4) ◽  
pp. 347-351 ◽  
Author(s):  
Cristofor I. Simionescu ◽  
Eugenia Comǎniǎ ◽  
Mariana Pǎstrǎvanu ◽  
Aura Angelica Popa
Keyword(s):  
Methyl Methacrylate ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

Kinetics of Inhibition and Retardation of Methyl Methacrylate Polymerization by Phenols

1986 ◽  
Vol 23 (2) ◽  
pp. 203-220 ◽  
Author(s):  
Rajani K. Samal ◽  
Prafulla K. Sahoo ◽  
Sakti P. Bhattacharjee ◽  
Himanwj S. Samantaray
Keyword(s):  
Methyl Methacrylate ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of ◽  
Kinetics Of Inhibition

Kinetics of methyl methacrylate polymerization initiated with phenylazoformamidoethyl 4-t-butylazo-4-cyanovalerate

1988 ◽  
Vol 24 (6) ◽  
pp. 515-519 ◽  
Author(s):  
C.I. Simionescu ◽  
A.A. Popa ◽  
E. Comǎniţǎ ◽  
M. Pǎstrǎvanu ◽  
S. Dumitriu
Keyword(s):  
Methyl Methacrylate ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

Investigating the effect of pristine and modified silica nanoparticles on the kinetics of methyl methacrylate polymerization

2011 ◽  
Vol 174 (1) ◽  
pp. 368-375 ◽  
Author(s):  
Mehdi Salami-Kalajahi ◽  
Vahid Haddadi-Asl ◽  
Saeid Rahimi-Razin ◽  
Farid Behboodi-Sadabad ◽  
Hossein Roghani-Mamaqani ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Silica Nanoparticles ◽  
Modified Silica ◽  
Methyl Methacrylate Polymerization ◽  
Modified Silica Nanoparticles ◽  
Kinetics Of

Copolymers Obtained by ε-Caprolactam and Methyl Methacrylate Polymerization in the Presence of Polyimides

2009 ◽  
Vol 21 (5) ◽  
pp. 579-595 ◽  
Author(s):  
Yakov S. Vygodskii ◽  
Tat'yana V. Volkova ◽  
Tat'yana L. Batalova ◽  
Olesya N. Zabegaeva ◽  
Elena M. Belavtseva ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
Methyl Methacrylate ◽  
Compression Modulus ◽  
Size Exclusion ◽  
Mechanical And Tribological Properties ◽  
Copolymer Films ◽  
Polymer Properties ◽  
Methyl Methacrylate Polymerization ◽  
Exclusion Chromatography ◽  
Kinetics Of

New copolymers have been synthesized by anionic or radical photopolymerization of ε-caprolactam or methyl methacrylate (MMA) in the presence of dissolved polyimides bearing hexafluoroisopropylidene, fluorene or other groups. Using diimides as models it was shown that the kinetics of anionic polymerization of ε-caprolactam depends on the nature of spacer between the imide cycles. The mechanical and tribological properties of copolymers, their water absorbance and the microstructure of copolymer films were studied. It was found that upon the selection of polyimide activator it was possible to gain the desirable control over the polymer properties, namely, the gel fraction content, phase composition, compression modulus, notched Izod impact strength, friction coefficient and temperature of frictional contact. The kinetics of radical polymerization of MMA in the presence of polyimide and model diimide has been studied by differential scanning photocalorimetry and infrared spectroscopy. From the results of the reaction kinetics and the study of polymer structures by Fourier transform infrared spectroscopy, nuclear magnetic resonance, size-exclusion chromatography and thermogravimetric analysis it has been established that radical photopolymerization of MMA in the presence of polyimide leads to the formation of copolymers owing to chain transfer reactions and/or chain termination by the relevant condensation polymer. It has been established that the imide cycles play a significant role in the formation of both copolymers with ε-caprolactam and MMA, respectively.

The influence of oxide nanoparticles on the kinetics of free radical methyl methacrylate polymerization in bulk

2013 ◽  
Vol 34 (8) ◽  
pp. 1342-1348 ◽  
Author(s):  
Oskar Bera ◽  
Mirjana Jovičić ◽  
Jelena Pavličević ◽  
Branka Pilić
Keyword(s):  
Free Radical ◽  
Methyl Methacrylate ◽  
Oxide Nanoparticles ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

The kinetics of methyl methacrylate polymerization by the system A1Et3−2,2′-dipyridyl

1979 ◽  
Vol 21 (7) ◽  
pp. 1708-1717
Author(s):  
E.P. Skvortsevich ◽  
Ye.L. Kopp ◽  
V.V. Mazurek ◽  
Ye.B. Milovskaya
Keyword(s):  
Methyl Methacrylate ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

Modeling of elementary reactions and kinetics of radical-initiated methyl methacrylate polymerization in the presence of ferrocene

2018 ◽  
Vol 50 (10) ◽  
pp. 742-756 ◽  
Author(s):  
N. V. Ulitin ◽  
K. A. Tereshchenko ◽  
A. K. Friesen ◽  
D. A. Shiyan ◽  
A. V. Takhautdinova ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Elementary Reactions ◽  
Methyl Methacrylate Polymerization ◽  
Kinetics Of

scholarly journals EFFECT OF AZOINITIATORS OF METHYL METHACRYLATE POLYMERIZATION ON THE FORMATION PROCESS AND MORFOLOGY OF POLYURETHANE /POLYMETHYL METHACRYLATE INTERPENETRATING POLYMER NETWORKS

2020 ◽  
Vol 86 (9) ◽  
pp. 39-54
Author(s):  
Liudmyla Kosynchuk ◽  
Oksana Antonenko ◽  
Volodymyr Grishchenko ◽  
Nataliia Busko ◽  
Taisa Ignatova ◽  
...  
Keyword(s):  
Phase Separation ◽  
Methyl Methacrylate ◽  
Chemical Reactions ◽  
Polymer Networks ◽  
Heterogeneous Systems ◽  
Interpenetrating Polymer Networks ◽  
Methyl Methacrylate Polymerization ◽  
Negative Effect ◽  
Kinetics Of

Interpenetrating polymer networks (IPN) are mixtures of two cross-linked polymers formed as a result of chemical reactions of in situ synthesis of components from single-phase initial mixtures. As a rule, due to the incompatibility of the components, a physical process of phase separation takes place with the formation of heterogeneous systems with insignificant interphase adhesion, which can have a negative effect on the physicochemical properties. To increase the compatibility of the components and to stabilize the systems, compatibilizers are introduced into the reaction mixtures. In this work the kinetics of the in situ formation of the components of polyurethane/poly(methyl methacrylate) interpenetrating polymer networks and the phase separation induced by chemical reactions in the presence of methyl methacrylate polymerization oligoazoinitiators in the reaction mixture were studied. Oligoazoinitiators contained fragments of a polyurethane chain also. It has been shown that the introduction of oligoazoinitiators of various chemical natures can control the process of IPN formation due to the formation of block copolymers during synthesis, which are compatibilizers of the mixture. They slow down the phase separation process and favor the formation of a finer IPN structure.

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