Free-radical polymerization at high pressure studied by excimer laser techniques

1990 ◽  
Vol 3 (1-6) ◽  
pp. 269-274
Author(s):  
M. Buback
Keyword(s):  
High Pressure ◽  
Free Radical ◽  
Radical Polymerization ◽  
Excimer Laser ◽  
Free Radical Polymerization ◽  
Laser Techniques

scholarly journals Pressure-assisted solvent- and catalyst-free production of well-defined poly(1-vinyl-2-pyrrolidone) for biomedical applications

RSC Advances ◽  
2020 ◽  
Vol 10 (36) ◽  
pp. 21593-21601
Author(s):  
Paulina Maksym ◽  
Magdalena Tarnacka ◽  
Dawid Heczko ◽  
Justyna Knapik-Kowalczuk ◽  
Anna Mielańczyk ◽  
...  
Keyword(s):  
High Pressure ◽  
Free Radical ◽  
Radical Polymerization ◽  
Biomedical Applications ◽  
Ambient Pressure ◽  
Free Radical Polymerization ◽  
Current Limitation ◽  
Catalyst Free ◽  
Pressure Synthesis

High-pressure classical free-radical polymerization allowed to eliminate the current limitation of the ambient-pressure synthesis of 1-vinyl-2-pyrrolidone and production of well-defined polymers.

scholarly journals Decompositions in the production of low density polyethylene: Reasons, consequences and prevention

2007 ◽  
Vol 61 (6) ◽  
pp. 357-363 ◽  
Author(s):  
Dragoslav Stoiljkovic ◽  
Slobodan Jovanovic ◽  
Jovica Djordjevic ◽  
Budimir Damjanovic
Keyword(s):  
High Pressure ◽  
Free Radical ◽  
Radical Polymerization ◽  
Scientific Literature ◽  
Free Radical Polymerization ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Industrial Practice ◽  
Polymerization Reactor

In the production of low density polyethylene by free radical polymerization of ethylene at high pressure, ethylene and polyethylene occasionally decompose to carbon, hydrogen and methane resulting in an enormous increase of pressure and temperature. Huge explosions occur in a polymerization reactor and in other parts of the installation. In addition to the well known reasons of decompositions, in this work it is pointed out that the polymerization under critical entropy conditions is an additional cause of explosions, which has not been recognized and elaborated in scientific literature and industrial practice.

Sign in / Sign up

Export Citation Format

Share Document