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New Insights into Acrylic Polymer Precipitation by Supercritical Fluids
Author(s) -
Montes Antonio,
Gordillo M. Dolores,
Pereyra Clara,
Martínez de la Ossa Enrique J.
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300509
Subject(s) - supercritical fluid , polymer , materials science , precipitation , chemical engineering , particle size , particle (ecology) , particle size distribution , nanoparticle , chemistry , composite material , nanotechnology , organic chemistry , physics , oceanography , meteorology , engineering , geology
Nanosystems based on polymers have attracted much attention due to the almost infinite diversity. In the past decades, the application of supercritical fluids for polymeric particle precipitation has been developed as an alternative to conventional processes. Here, precipitation of an acrylic copolymer was attempted by the rapid expansion of supercritical solutions (RESS) and successful by supercritical antisolvent (SAS) processes. In addition, the nanoparticles were characterized with different techniques. The polymer concentration, pressure, temperature, liquid solution flow rate and nozzle diameter effects were also evaluated with regard to particle size and the particle size distribution of this polymer.