Randomized trial investigates how cationic polyacrylamide affects filler retention in paper, suggesting optimal molecular weight based on particle size.
Key Points
This research aims to explore how the molecular weight of cationic polyacrylamide affects the retention of different sized inorganic fillers during papermaking.
Used Wet End Process Simulator to replicate industrial sheet forming under vacuum dewatering and vibration.
Compared effects of different molecular weights of C-PAM (6 to 8 × 10^6) on talc and ground calcium carbonate retention.
Analyzed performance with mixed-filler systems (talc:GCC = 50:50).
Larger-particle talc showed greater flocculation and poorer sheet formation than smaller GCC.