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Competency of sonolysis on PTC induced polymerization of EMA – A comparative kinetic study

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Title Competency of sonolysis on PTC induced polymerization of EMA – A comparative kinetic study
 
Creator Prabha, J.
Meena, M.
Umapathy, M. J.
 
Subject Kinetics
Phase-transfer catalysis
Polymerization
Reaction mechanisms
Sonolysis
 
Description 538-545
In the presence of biphasic medium, ethyl methacrylate has been polymerized using phase transfer catalyst under
silent/ultrasonic condition (53 KHz, 100 W) at 60℃ (±1℃) as well as under inert atmosphere. A series of quaternary
ammonium salts namely 1,4-Bis(dimethylhexyl)ethylenediammonium bromide (DMHEDAB), 1,4-Bis(dimethylheptyl)
ethylenediammonium bromide (DMH1EDAB) and 1,4-Bis(dimethyloctyl) ethylenediammonium bromide (DMOEDAB)
have been selected as phase transfer catalysts (PTCs). Rate of polymerization is assessed in silent and sonolytic
conditions by varying the concentrations of monomer, initiator, PTCs, solvents, and temperature. The synergism of
sonolysis and phase transfer catalysts increased the rate when compared to silent polymerization. Based on the results,
thermodynamic values are measured, and the order of efficacy of all three catalysts are observed as DMOEDAB >
DMH1EDAB > DMHEDAB.
 
Date 2024-07-03T09:28:49Z
2024-07-03T09:28:49Z
2024-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/64164
https://doi.org/10.56042/ijct.v31i4. 1690
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.31(4) [July 2024]