关键词:

共聚物, 阻垢;合成;荧光

Abstract:

A novel water soluble fluorescent monomer, 4-(N′-methyl-1-piperazinylallyl)-N-butyl-naphthalimide allyl chloride quaternary ammonium salt (FC) was synthesized from 4-bromo-1,8-maphthalic anhydride and N-methylpiperazidine.Its structure was characterized by IR, 1H NMR and elemental analysis.The 2-acrylamido-2-methyl-propanesulfonic acid /acrylic acid copolymer containing fluorescent group (FC-POCA) was prepared by copolymerization of FC, acrylic acid (AA), 2-acrylamido-2-methyl-propanesulfonic acid(AMPS) and NaPO3.The fluorescence and scale inhibition performance of FC-POCA was investigated.The relationship of fluorescence intensity and concentration of FC-POCA was linear, and the correlation coefficient (R) was 0.9578，and the limit of detection was 0.65 mg·L^-1.By the static method, the scale inhibition ratio of CaCO₃ was 77.2% when the copolymer concentration was 20 mg·L^-1，scale inhibition ratio of CaSO₄ was 100% when the copolymer concentration was 25 mg·L^-1.The results by SEM showed that the copolymer had high performance of scale inhibition on both dispersion and lattice distortion of CaCO_3.

Key words:

共聚物, 阻垢;合成;荧光