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They are miscible with water in all ratios ( that is true for poly-2-methyl-2-oxazoline and poly-2-ethyl-2-oxazoline. Both polymers have very good film-bilding properties, are comparably stable
Poly(vinyl alcohol)(PVA, M n = 70000–90000 g/mol, 99% hydrolyzed, Aladdin) and poly (acrylic acid) (PAA, 53 wt% in water, M w = 4000–7000) were purchased from Shandong Heli water treatment
