Abstract
AbstractAutomatic continuous online monitoring of polymerization (ACOMP) is a widely applicable platform for monitoring and potentially controlling polymerization reactions. It relies on the continuous extraction, dilution, and conditioning of a small sample stream from the reactor on which measurements by various combinations of detectors are made. By combining simultaneous data from multiple detectors, continuous monitoring of salient reaction characteristics can be made, such as kinetics, conversion of comonomers, composition drift, evolution of molecular mass and intrinsic viscosity, and detection of unusual phenomena, such as microgelation and runaway reactions. Typical detectors include light scattering,UV/visible spectrophotometry, viscometry, refractivity, and polarimetry. Recent additions toACOMPinclude the ability to use multiple similar sensors to detect the onset and evolution of polymer‐stimuli‐responsive behavior during synthesis, for example, copolymer compositions at which a lower critical solution temperature occurs.ACOMPhas been applied to free radical, controlled free radical, and condensation reactions, to micellar, emulsion, and inverse emulsion polymerization, to postpolymerization and derivitization reactions, and to batch, semibatch, and continuous reactors. WhileACOMPis not inherently a chromatographic method, its continuous stream can be used in automatic conjunction with gel permeation chromatography (GPC) and other separation chromatographies. A growing area forACOMPis its integration into predictive and closed‐loop reaction control.
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