This invention discloses a
polymer ring-opening
polymerization reaction control system based on high-
viscosity rheological control, relating to the field of high-
viscosity polymerization control technology, and specifically to the reaction control of the high-
viscosity final stage of ring-opening
polymerization of medical
absorbable polymers PPDO or PGLA. A micro-bypass rheological measurement loop is installed alongside the main process to periodically collect fast variables and obtain reference viscosity point, shear
consistency index,
differential pressure drift,
response time, and other health indicators. The bypass is isolated in case of abnormalities. Based on fast variable prediction and combined with
health indicator calculations, a confidence weight is performed, and gated correction and parameter updates are executed, outputting a quality status estimate and reliable / suspicious / unusable tags.
Trajectory control is performed under constraints such as temperature, torque, and
differential pressure, with incremental control limited by tags. A degradation-cleaning-
recovery state
machine is triggered and an event log is recorded. This scheme can suppress false
signal-driven processes, reduce the risk of deviation and loss of control, improve batch
pass rate and closed-loop availability, and support
continuous production traceability and operation and
maintenance management.