Shear stability of inverse latexes during their polymerization process. Issue 4 (2nd January 2015)

• Record Type: Journal Article
• Authors: Lazzari, Stefano; Jaquet, Baptiste; Wu, Hua; Morbidelli, Massimo
• Is Part Of: AIChE journal. Volume 61:Issue 4(2015:Apr.)
• Page Start: 1380
• Page End: 1384
• Publication Date: 2015-01-02
• Subjects: Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.14721
• Languages: English
• ISSNs: 0001-1541

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>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 <italic>AIChE J</italic>, 61: 1380–1384, 2015</p> </abstract>