Measuring Interfacial Polymerization Kinetics Using Microfluidic Interferometry

Abstract : Interfacial polymerization is used in a range of elds, both academic and industrial, for the production of bers, capsules , and lms. Despite its widespread use, measuring the reaction kinetics of interfacial polymerization has remained a challenge. For example, reaction kinetics for polyamide reverse osmosis membranes are dicult to obtain and rarely reported due to the thinness of lms, and rapidity of their formation at the liquid-liquid interface. Here, polyamide lm formation is studied using a microuidic, interferometry-based technique to measure monomer concentration near the interface as the reaction occurs. Our results are consistent with a polymeriza-tion reaction that is initially controlled by a reaction-diusion boundary layer within the organic phase. Using simple scaling arguments to analyze our data, we report the rst measurements of the reaction rate constant for this system.
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Journal of the American Chemical Society, American Chemical Society, 2018, 140 (9), pp.3173-3176. 〈10.1021/jacs.7b12121〉
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Arash Nowbahar, Vincent Mansard, Jodi Mecca, Mou Paul, Tina Arrowood, et al.. Measuring Interfacial Polymerization Kinetics Using Microfluidic Interferometry. Journal of the American Chemical Society, American Chemical Society, 2018, 140 (9), pp.3173-3176. 〈10.1021/jacs.7b12121〉. 〈hal-01734561〉

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