文档介绍：Synthesis and performance research of
biodegradable modified polyaspartic acid
Yuhua Gao, Zhenfa Liu, Lihui Zhang Yanji Wang
Institute of Energy Resources, Hebei Academy of Sciences School of Chemical Engineering and Technology
Shijiazhuang, China Hebei University of Technology
E-mail: gaoyuhua77@ Tianjin, China
Abstract—Modified polyaspartic acid (PASP-SEA-ASP) was were studied. The structure of modified polyaspartic acid was
prepared from inimide (PSI) that was thermal characterized by means of FTIR. Calcium carbonate crystals in
condensation polymer of aspartic acid (ASP), taurine (SEA) and scale samples were analysed by means of SEM.
ASP. The property of scale inhibition, dispersant and
biodegradation of PASP-SEA-ASP were studied. The structure of
modified polyaspartic acid was characterized by means of FTIR. II. EXPERIMENTAL
Calcium carbonate crystals in scale samples were analysed by
means of SEM. The results showed that under Ca2+ 400 mg/L, A. Synthesis of inimide
-
HCO3 800 mg/L and PASP-SEA-posite 4 mg/L, the O
scale inhibition rate of PASP-SEA-ASP was 67%. Under PASP-
SEA-posite 15 mg/L, the least diaphaneity of the top OH
OH
liquid on dispersing iron oxide was %. And PASP-SEA-ASP H2N
possess better biodegradation performance and the highest O
biodegradation rate can reach 70%. Modified polyaspartic acid
could