LAPSE:2018.0223
Published Article
LAPSE:2018.0223
Simultaneous Monitoring of the Effects of Multiple Ionic Strengths on Properties of Copolymeric Polyelectrolytes during Their Synthesis
Aide Wu, Zifu Zhu, Michael F. Drenski, Wayne F. Reed
July 31, 2018
A new Automatic Continuous Online Monitoring of Polymerization reactions (ACOMP) system has been developed with multiple light scattering and viscosity detection stages in serial flow, where solution conditions are different at each stage. Solution conditions can include ionic strength (IS), pH, surfactants, concentration, and other factors. This allows behavior of a polymer under simultaneous, varying solution conditions to be monitored at each instant of its synthesis. The system can potentially be used for realtime formulation, where a solution formulation is built up additively in successive stages. It can also monitor the effect of solution conditions on stimuli responsive polymers, as their responsiveness changes during synthesis. In this first work, the new ACOMP system monitored light scattering and reduced viscosity properties of copolymeric polyelectrolytes under various IS during synthesis. Aqueous copolymerization of acrylamide (Am) and styrene sulfonate (SS) was used. Polyelectrolytes in solution expand as IS decreases, leading to increased intrinsic viscosity (η) and suppression of light scattering intensity due to electrostatically enhanced second and third virial coefficients, A₂ and A₃. At a fixed IS, the same effects occur if polyelectrolyte linear charge density (ξ) increases. This work presents polyelectrolyte response to a series of IS and changing ξ during chemical synthesis.
Keywords
ACOMP, copolymeric polyelectrolytes, light scattering, online monitoring, viscosity
Subject
Suggested Citation
Wu A, Zhu Z, Drenski MF, Reed WF. Simultaneous Monitoring of the Effects of Multiple Ionic Strengths on Properties of Copolymeric Polyelectrolytes during Their Synthesis. (2018). LAPSE:2018.0223
Author Affiliations
Wu A: Physics Dept., Tulane University, New Orleans, LA 70115, USA
Zhu Z: Physics Dept., Tulane University, New Orleans, LA 70115, USA
Drenski MF: Advanced Polymer Monitoring Technologies, Inc., 1078 S. Gayoso St., New Orleans, LA 70125, USA
Reed WF: Physics Dept., Tulane University, New Orleans, LA 70115, USA [ORCID]
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Journal Name
Processes
Volume
5
Issue
2
Article Number
E17
Year
2017
Publication Date
2017-04-11
Published Version
ISSN
2227-9717
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PII: pr5020017, Publication Type: Journal Article
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LAPSE:2018.0223
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doi:10.3390/pr5020017
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Jul 31, 2018
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