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Online monitoring of polymer particle growth.

Many attempts have been made to elucidate the growth behavior of polymer particles in catalytic olefin polymerizations on support catalysts. Using Lasentec focused beam reflectance measurement (FBRM) and particle vision and measurement (PVM) probes, Xalter and Mulhaupt at Albert-Ludwigs University Freiburg in Germany are able to perform the first real-time monitoring of polymer particle growth during stirred ethylene slurry polymerization in a standard lab-scale reactor. FBRM provides statistically significant data on particle numbers and size distributions. Combined with ethylene mass-flow measurements, FBRM online monitoring allows for the distinction of different types of particle growth processes, depending on catalyst type and productivity. In addition, the PVM video microscopy probe enables the online visualization and morphological characterization of polymer particles, thereby complementing the data generated by FBRM.

R. Mulhaupt et al., Macromol. React. Eng. DOI: 10.1002/mren.200900048
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Title Annotation:Materials Views
Author:Beltran, L.
Publication:Plastics Engineering
Article Type:Brief article
Geographic Code:1USA
Date:Apr 1, 2010
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