The effects of poly(ethylene glycol) grafting density on the extensional solution flows of high molecular weight polyacrylamide
Adam Linscott,
Rene Zhu,
Lauren Hong
et al.
Abstract:Controlling the extensional rheological properties of solutions is of great interest for a number of applications, such as printing and coatings, as polymeric additives can modify a fluid's droplet size, formation, and breakup. We have measured the extensional flows of polyacrylamide graft poly(ethylene glycol) amine (PAM‐g‐PEGa) solutions as a function of grafting density. PAM‐g‐PEGa is synthesized with grafting densities of 2.5%, 5.5%, 8%, and 30% and extensional flow was analyzed with drop‐on‐substrate rheo… Show more
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