Shear stability of inverse latexes during their polymerization process
| Autor: | Stefano Lazzari, Massimo Morbidelli, Hua Wu, Baptiste Jaquet |
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| Rok vydání: | 2015 |
| Předmět: |
Coalescence (physics)
chemistry.chemical_classification Environmental Engineering Materials science General Chemical Engineering 02 engineering and technology Polymer 021001 nanoscience & nanotechnology 01 natural sciences Polyelectrolyte chemistry.chemical_compound Colloid Monomer Shear (geology) chemistry Chemical engineering Polymerization 0103 physical sciences Polymer chemistry Copolymer 010306 general physics 0210 nano-technology Biotechnology |
| Zdroj: | AIChE J. |
| ISSN: | 0001-1541 |
| DOI: | 10.1002/aic.14721 |
| Popis: | The shear-stability of inverse latexes (IL) during their polymerization process is studied. The IL is made of water droplets containing a copolymer of acrylamide and dimethyl-aminoethyl-methylenechloride emulsified in a paraffin oil. It is found for the first time that the shear stability of the ILs is a nonmonotonic function of the monomer conversion. At low conversions the shear stability increases as the conversion increases, but at a certain conversion value it reaches a local maximum and then decreases with conversion. Moreover, at the final stage of the conversion, the shear stability can increase again. A proper interpretation of this behavior is proposed and related to the combined effects of the polymer properties, fractal aggregation, and coalescence. © 2015 American Institute of Chemical Engineers AIChE J, 61: 1380–1384, 2015 |
| Databáze: | OpenAIRE |
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