Synthesis of poly(vinyl acetate–methyl methacrylate) copolymer microspheres using suspension polymerization

2012 ◽  
Vol 368 (1) ◽  
pp. 400-405 ◽  
Author(s):  
Md. Shahidul Islam ◽  
Jeong Hyun Yeum ◽  
Ajoy Kumar Das
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Suspension Polymerization ◽  
Acetate Methyl ◽  
Methacrylate Copolymer

A thermocouple method of following the non-stationary state of chemical reactions - I. The evaluation of velocity coefficients for vinyl acetate, methyl methacrylate, and butyl acrylate polymerization reactions

1954 ◽  
Vol 225 (1162) ◽  
pp. 330-345 ◽  
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Stationary State ◽  
Chemical Reactions ◽  
Butyl Acrylate ◽  
Reaction Vessel ◽  
Acetate Methyl ◽  
Rate Of Polymerization ◽  
Thermocouple Method ◽  
Temperature Time

A method has been described for following the rise in temperature of a reacting mixture during the non-stationary state of polymerization reactions. The rate of polymerization and the corresponding lifetime can be obtained from the temperature-time curves, since the reaction near the centre of the reaction vessel remains adiabatic for about 30s. The ratios of the rate constants for the propagation reaction to the termination reaction have been measured for vinyl acetate, methyl methacrylate and butyl acrylate, and compared with the values reported by other investigators using different methods.

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