荧光示踪型AA-IA的合成及性能研究

Preparation and Performance of Fluorescent Tracer Acrylic Acid-Itaconic Acid

摘要: 以4-溴-1,8-萘二甲酸酐和N,N-二甲基-1,3-丙二胺为起始原料，经过酰胺化、胺化和季铵化三步反应，得到含有可聚合双键的荧光单体4-丁胺基-N-(2-N’,N’-二甲基氨基丙基)萘二甲酰亚胺烯丙基氯化铵(FT)。将FT与丙烯酸(AA)和衣康酸(IA)进行共聚得到FT-AA-IA共聚物。对FT-AA-IA共聚物的荧光性能和阻垢性能进行了研究。结果表明：FT-AA-IA的激发波长和发射波长分别为447 nm和546 nm；FT-AA-IA共聚物的荧光强度与其质量浓度呈良好的线性关系，检测下限为0.19 mg∙L−1；采用静态法对其阻垢性能进行了研究，当加药量为12 mg∙L−1时对碳酸钙的阻垢率可以达到89.3%。其他水处理药剂对其荧光性能没有影响。

Abstract: A novel fluorescent monomer, 4-butylamino-N-(2-N’,N’-dimethylamino propyl)naphthalimide allyl chloride quaternary ammonium salt (FT) was synthesized from 4-bromo-1,8-naphthalic anhydride and N,N-dimethyl-1,3-propanediamine via amidation, amination and quaterisation. The fluorescent tracer acrylic acid/itaconic acid (FT-AA-IA) was prepared by copolymerization of FT, acrylic acid (AA) and itaconic acid (IA). The effects of FT-AA-IA on fluorescence and scale inhibition were researched. The results showed that the excited and emitted wavelength of the FT-AA-IA is 447 nm and 546 nm, respectively. The relationship of fluorescent intensity and concentration of FT-AA-IA is linear. The lowest determined limit is 0.19 mg∙L−1. The FT-AA-IA scale inhibition performance was studied by the static method. The scale inhibition ratio of CaCO3 is 89.3% when the concentration of FT-AA-IA is 12 mg∙L−1. Other water treatment chemicals have no effect on the fluorescence properties of FT-AA-IA.