Modification of crosslinked glycidyl methacrylate-based polymers for boron-specific column extraction
Modification of crosslinked glycidyl methacrylate-based polymers for boron-specific column extraction
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DOI：
10.1016/s1381-5148(01)00025-6
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发表时间：
2001-04-01
影响因子：
5.1
通讯作者：
Gazi, M
中科院分区：
文献类型：
--
作者：
Biçak, N;Bulutçu, N;Gazi, M
在N-甲基吡咯烷酮溶剂中，用N-甲基-(D)-葡聚糖胺对甲基丙烯酸缩水甘油酯(0.4摩尔)、甲基丙烯酸甲酯(0.5摩尔)和二乙烯基苯(0.1摩尔)球形三元共聚物进行了改性。官能度为2.05 mmolg(-1)的聚合物具有中等溶胀能力(1.81nu/nu(O))，并表现出优异的吸硼能力(2.15 mmolg(-1))，用于从水溶液中提取微量H3BO3。大小为110-210um的树脂聚合物具有合理的穿透容量(0.835 mmolg(-1))，在柱萃取液中具有较高的洗脱曲线。Ca(II)、Mg(II)和Fe(III)离子(0.1M)不产生干扰，但在这些离子的存在下，由于树脂颗粒上形成的金属氢氧化物共沉淀了苯甲酸酯，所以干扰很小。即使在柱萃取物中循环20次，树脂的容量和流速也没有变化。该方法已被证明是从水溶液中大规模提取硼的很有前途的方法。(C)2001 Elsevier Science B.V.保留所有权利。
Terpolymers of glycidyl methacrylate (0.4 mol) with methyl methacrylate (0.5 mol) and divinyl benzene (0.1 mol) in spherical beads form have been modified with N-methyl-(D)-glucamine in N-methyl pyrrolidone solvent. Polymers with (2.05 mmol g(-1)) functionality have moderate swelling ability (1.81 nu/nu (o),) and show excellent boron uptake ability (2.15 mmol g(-1)) for extraction of trace quantities of H3BO3 from aqueous solutions. The resinous polymer with 110-210 mum size has a reasonable breakthrough capacity (0.835 mmol g(-1)) and a sharp elution profile in the column extractions. No interferences come from Ca(II), Mg(II) and Fe(III) ions (0.1 M), though slightly in the presence of these ions due to coprecipitation of berates by the metal hydroxides formed on the resin particles. The capacity of the resin and flow rate do not change even after 20 recyclings in the column extractions. The method has been shown to be promising for large-scale boron extractions from aqueous solutions. (C) 2001 Elsevier Science B.V. All rights reserved.