scholarly journals Identification of β scission products from free radical polymerizations of butyl acrylate at high temperature

2019 ◽  
Vol 10 (15) ◽  
pp. 1956-1967 ◽  
Author(s):  
Marco Drache ◽  
Maria Stehle ◽  
Jonas Mätzig ◽  
Katrin Brandl ◽  
Marcel Jungbluth ◽  
...  
Keyword(s):  
High Temperature ◽  
Free Radical ◽  
Radical Polymerization ◽  
Butyl Acrylate ◽  
Molar Mass ◽  
Esi Ms ◽  
Radical Polymerizations

Unsaturated low molar mass species were identified via ESI-MS after fractionation of poly(butyl acrylate) from high temperature radical polymerization.

Modeling of Free Radical Polymerization of Azobenzene-based Linear Polymers

2012 ◽  
Vol 1403 ◽  
Author(s):  
Danish Iqbal ◽  
C. Melchert ◽  
M. Behl ◽  
A. Lendlein ◽  
S. Beuermann
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Butyl Acrylate ◽  
Software Package ◽  
Kinetic Data ◽  
Liquid Crystalline ◽  
Linear Polymers ◽  
Reasonable Approximation ◽  
Radical Polymerizations ◽  
Remarkable Agreement

ABSTRACTModeling of free radical polymerizations of the liquid-crystalline monomer 6-[4-(4-heptyloxyphenylazo)phenoxy]hexylacrylate using the PREDICI software package is reported. The model accounts for all elemental reactions that were identified to be important for radical polymerizations of acrylate-type monomers. On the basis of butyl acrylate kinetic data a remarkable agreement between number average molar masses from modelling (Mn,sim) and from experiments (Mn,exp) is observed: Mn,sim = 17800 g·mol−1 and Mn,exp = 17400 g·mol−1. Similarly, dispersity values of 1.8 and 1.6 were determined via modelling and experiments, respectively. It is shown that the assumption of butyl acrylate kinetics provides a reasonable approximation even for acrylate-based monomers having mesogenic substituents.

Impact of side reactions on molar mass distribution, unsaturation level and branching density in solution free radical polymerization of n-butyl acrylate under well-defined lab-scale reactor conditions

2021 ◽  
Vol 12 (14) ◽  
pp. 2095-2114 ◽  
Author(s):  
Mariya Edeleva ◽  
Yoshi W. Marien ◽  
Paul H. M. Van Steenberge ◽  
Dagmar R. D'hooge
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Chain Length ◽  
Mass Distribution ◽  
Butyl Acrylate ◽  
Molar Mass ◽  
Free Radical Polymerization ◽  
Molar Mass Distribution ◽  
Side Reactions ◽  
Scale Reactor

The paper describes the influence of side reactions in isothermal solution free-radical polymerization of n-butyl acrylate accounting for chain-length dependent diffusional limitations on termination.

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