Jacket temperature regulation allowing well-defined non-adiabatic lab-scale solution free radical polymerization of acrylates

2021 ◽  
Author(s):  
Mariya Edeleva ◽  
Yoshi W. Marien ◽  
Paul H. M. Van Steenberge ◽  
Dagmar R. D'hooge
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Temperature Regulation ◽  
Butyl Acrylate ◽  
Free Radical Polymerization ◽  
Side Reactions

Conventional batch solution free radical polymerization of n-butyl acrylate with thermal initiators such as AIBN is known to be strongly exothermic and influenced by highly activated side reactions such as backbiting and β-scission.

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.

scholarly journals Poly (Butyl Acrylate)-Graft-Polystyrene Synthesis by Free-Radical Polymerization: Interplay between Structure, Morphology, Mechanical, and Optical Properties

Polymers ◽  
2019 ◽  
Vol 11 (8) ◽  
pp. 1317 ◽  
Author(s):  
J. Fage ◽  
K. Knoll ◽  
N. Niessner ◽  
O. Carstensen ◽  
T. Schulz ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Free Radical ◽  
Radical Polymerization ◽  
Butyl Acrylate ◽  
Free Radical Polymerization ◽  
Cross Linking ◽  
Analogous Reaction ◽  
Transmission Electron ◽  
Structure Morphology ◽  
Reactive Groups

We report a new method of preparation of poly (butyl acrylate)-g-polystyrene/polystyrene blends by free-radical polymerization. Copolymerization of glycidyl (meth)acrylate with butyl acrylate is followed by a polymer analogous reaction of this copolymer with acrylic acid and subsequent copolymerization of the modified backbone with styrene. Investigation on the number of reactive groups per backbone chain and its molecular weight allows grafting efficiencies of about 35% to be reached, as well as low cross-linking. Blends of nanophase-separated copolymers having a backbone with Mn of around 50 kg/mol and 4 reactive groups per chain are transparent, with haze as low as 14%, tensile strength of around 22 MPa, and elongations at the break of around 3%. Correlation between morphology determined by transmission electron microscopy and properties of the blend is established.

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