Abstract:

Modified feather protein grafted poly(acrylic acid-acrylamide) superabsorbents ［P(MFP-g-AA/AM)］ were synthesized by using modified feather protein (MFP), acrylic acid (AA) and acrylamide (AM) as start materials, N,N′-methylenebisacrylamide (NMBA) as crosslinker and K₂S₂O₈-NaHSO₃ as initiator.The water absorbency performance and its influence factors of the P(MFP-g-AA/AM) superabsorbents were investigated.The results showed that the preferable synthesis conditions for P(MFP-g-AA/AM) were as follows: W_AA∶W_AM=70∶30, W_MFP∶W_AA+AM=10%, W_crosslinker∶W_AA+AM=0.10%, W_initiator∶W_AA+AM=0.8%, neutralization degree of the acrylic acid 90%, reaction temperature 60℃ and reaction time 2 h.The absorbency of the P(MFP-g-AA/AM) superabsorbents was 578.0 g•g^-1 in the case of de-ionized water,78.6 g•g^-1 in the case of 0.9% NaCl solution and 75.1 g•g^-1 in the case of artificial urine, higher than the absorbency of modified feather protein grafted acrylic acid superabsorbents.