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Synthesis, characterization, morphology and adsorption performance towards cu +2 ions of nano-sized copolymers of anthranilic acid and o -aminophenol poly(anthranilic acid-co-o-aminophenol)
Journal of Polymer Research ( IF 2.6 ) Pub Date : 2020-03-14 , DOI: 10.1007/s10965-019-1980-5
A.M. Metwally , A. F. Shaaban , M. M. Azab , A. A. Mahmoud , H. M. Ali

Nanospheres with different particles size and nanorodes of copolymer of anthranilic acid with o-aminophenol poly(AA-co-o-AP) were synthesized by redox polymerization initiated by FeSO4.7H2O as redox initiator and ammonium peroxydisulfate (APS) as oxidant in different concentrations of aqueous solutions of hydrochloric acid. The influence of synthetic parameters such as acid concentration and the presence of redox initiator were investigated. The morphology and particles size were studied by transmission electron microscope (TEM) and scanning electron microscope (SEM). The results showed that the morphology and average particle size of polymeric nano particles according to SEM and TEM analyses were different based upon the conditions of the copolymerization. The physico-chemical characterization of the prepared nanoparticles was carried out by Fourier transform infrared spectroscopy (FT-IR), X-ray powder diffraction (XRD) and Thermogravimetric(TGA). Which FT-IR confirmed the structure of poly(AA-co-o-AP) nanoparticles in emeraldine form. The molecular weight was determined by gel permeation chromatography (GPC). The surface area of nanocopolymer particles was determined also by Brunauer-Emmett-Teller (BET). The competition of the prepared nano-sized copolymers particles towards the adsorption of copper ions from aqueous solutions was investigated. The results showed that the adsorption capacity was based on particle size of nanocopolymers and their surface area. The adsorption capacity increased with decreasing the particle size. On the other hand the adsorption capacity increased with increasing the surface area and the molecular weight of the prepared nano-sized copolymers of poly(AA-co-o-AP).



中文翻译:

邻氨基苯甲酸与邻氨基苯酚聚(邻氨基苯甲酸-邻氨基苯酚)纳米共聚物的合成,表征,形貌和对Cu +2离子的吸附性能

FeSO 4 .7H 2引发的氧化还原聚合反应合成了不同粒径的纳米球和邻氨基苯甲酸与氨基酚聚(AA-co- o - AP)共聚物的纳米棒。在不同浓度的盐酸水溶液中,O为氧化还原引发剂,过氧二硫酸铵(APS)为氧化剂。研究了诸如酸浓度和氧化还原引发剂的存在等合成参数的影响。通过透射电子显微镜(TEM)和扫描电子显微镜(SEM)研究了形貌和粒径。结果表明,根据共聚条件,根据SEM和TEM分析,聚合物纳米颗粒的形貌和平均粒径不同。通过傅立叶变换红外光谱(FT-IR),X射线粉末衍射(XRD)和热重分析(TGA)对所制备的纳米颗粒进行理化表征。哪个FT-IR证实了聚(AA-co- o-AP)翡翠形式的纳米粒子。通过凝胶渗透色谱法(GPC)测定分子量。纳米共聚物颗粒的表面积也通过Brunauer-Emmett-Teller(BET)测定。研究了制备的纳米级共聚物颗粒对水溶液中铜离子吸附的竞争。结果表明,吸附能力取决于纳米共聚物的粒径及其表面积。吸附能力随粒径的减小而增加。另一方面,随着制备的聚(AA-co- o - AP)的纳米级共聚物的表面积和分子量的增加,吸附容量增加。

更新日期:2020-03-14
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