摘要
以4-溴-1,8-萘二甲酸酐和N-甲基哌嗪为原料,合成得到一种新的荧光单体4-(N′-甲基-1-哌嗪基)-N-丁基-1,8-萘二甲酰亚胺烯丙基氯季铵盐(FC)。通过红外光谱、核磁共振及元素分析对FC进行了表征。将FC与丙烯酸(AA),2-丙烯酰胺基-2-甲基丙磺酸(AMPS),次亚磷酸钠共聚制备了含荧光基团的AA-AMPS共聚物(FC-POCA)。对该共聚物的荧光性质和阻垢性能进行了研究,结果表明:共聚物的荧光强度与其质量浓度呈良好的线性关系,线性相关系数为0.9578,检测下限为0.65mg.L-1;采用静态法,当药剂量为20mg.L-1时对碳酸钙阻垢率可达77.2%,当药剂量为25mg.L-1时对硫酸钙阻垢率已经达到100%,与市售的POCA相当,达到了阻垢剂的阻垢分散性能要求。通过扫描电镜观察发现FC-POCA对CaCO3垢既有较强的分散作用又具有明显的晶格畸变能力。
A novel water soluble fluorescent monomer, 4-（NCmethyl-1-piperazinylallyl）-N-butylnaphthalimide allyl chloride quaternary ammonium salt （FC） was synthesized from 4-bromo-1, 8- maphthalic anhydride and N-methylpiperazidine. Its structure was characterized by IR, 1↑ H 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 CaCO3.
出处
《化工学报》
EI
CAS
CSCD
北大核心
2008年第2期520-525,共6页
CIESC Journal
基金
江苏省自然科学基金项目(BK2006201)~~
关键词
共聚物
阻垢
合成
荧光
copolymer
scale inhibition
synthesis
fluorescence
