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Graft copolymerization of methyl methacrylate on Meizotropis Pellita fibres and their applications in oil absorbency
Iranian Polymer Journal ( IF 3.1 ) Pub Date : 2020-10-03 , DOI: 10.1007/s13726-020-00869-7
Akshay C. Jadhav , Nilesh C. Jadhav

This research paper deals with the graft copolymerisation of methyl methacrylate (MMA) on the backbone of Meizotropis Pellita fibres (MPF), which was successfully carried out under aqueous medium using Fenton's reagent [ferrous ammonium sulphate (FAS) (8.0 × 10–3 M) and H2O2 (0.12 M)] as a redox initiator to impart hydrophobic properties. Grafting was optimized under different conditions concerning time, temperature, monomer ratio, material to liquor ratio and initiator concentration. Maximum graft yield percentage obtained was 120%. The grafted MPF was characterized using Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), thermogravimetric analysis (TGA) and X-ray diffraction (XRD) studies. The FTIR spectroscopic data showed a peak at 1728 cm−1 of C=O (ester), and another peak at 1650 cm−1 of adsorbed water, which was absent in the grafted fibre. The grafted fibre showed excellent thermal stability with an overall weight loss of 56.5% with a char residue of 33.5%. In addition, X-ray diffraction of MMA-grafted MPF showed 21% crystallinity and crystallinity index of 0.16. These raw and grafted fibres were also subjected to physico-chemical properties like moisture absorbance, swelling behaviour and chemical resistance, which they showed that MMA-grafted MPF exhibited hydrophobic properties. Therefore, due to this hydrophobic behaviour, the oil absorbency of MMA-grafted MPF was studied towards four emulsions: crude oil–saline, engine oil–saline, diesel oil–saline and used engine oil–saline. An MMA-grafted MPF by 120% absorbed 23.60 g of crude oil in the first cycle, 17. 41 g in the second cycle and 14.21 g in the third cycle, whereas 13.14 g of diesel oil was absorbed in the first cycle, 8.24 g in the second cycle and 5.25 g in the third cycle. Similarly, 20.14 g of engine oil was absorbed in the first cycle, 10.00 g in the second cycle and 7.51 g in the third cycle. Lastly, 19.80 g of the engine oil was absorbed in the first cycle, 12.25 g in the second cycle and 7.98 g in the third cycle. These results showed that the oil removal efficiency of the grafted MPF was intact by oil fraction type and they can be applied for all kinds of oil fraction spillage.



中文翻译:

甲基苯丙胺纤维上甲基丙烯酸甲酯的接枝共聚及其在吸油性中的应用

本文研究甲基丙烯酸甲酯(MMA)在中生细纤维(MPF)骨架上的接枝共聚反应,这是在水介质中使用Fenton试剂[硫酸亚铁铵(FAS)(8.0×10 –3  M )和H 2 O 2(0.12 M)]作为赋予疏水性的氧化还原引发剂。在涉及时间,温度,单体比,原料与液体比和引发剂浓度的不同条件下对接枝进行了优化。获得的最大嫁接产率为120%。使用傅里叶变换红外(FTIR)光谱,扫描电子显微镜(SEM),热重分析(TGA)和X射线衍射(XRD)研究来表征接枝的MPF。FTIR光谱数据显示在C = O(酯)的1728 cm -1处有一个峰,在1650 cm -1处有另一个峰。接枝纤维中没有的吸附水。接枝纤维表现出优异的热稳定性,总重量损失为56.5%,残炭残留量为33.5%。另外,MMA接枝的MPF的X射线衍射显示出21%的结晶度和0.16的结晶指数。这些粗纤维和接枝纤维还经受了诸如吸湿性,溶胀行为和耐化学性的理化性质,它们表明MMA接枝的MPF表现出疏水性。因此,由于这种疏水性,对MMA接枝的MPF的吸油性针对四种乳液进行了研究:原油-盐水,机油-盐水,柴油-盐水和废机油-盐水。120%的MMA接枝MPF在第一周期吸收了23.60 g原油,第二周期吸收了17.41 g,第三周期吸收了14.21 g,而在第一个循环中吸收了13.14 g柴油,在第二个循环中吸收了8.24 g,在第三个循环中吸收了5.25 g。同样,在第一个循环中吸收了20.14 g机油,在第二个循环中吸收了10,00 g,在第三个循环中吸收了7.51 g。最后,在第一个循环中吸收了19.80 g的机油,在第二个循环中吸收了12.25 g,在第三个循环中吸收了7.98 g。这些结果表明,接枝MPF的除油效率不受油馏分类型的影响,可用于各种油馏分的泄漏。第二周期25 g,第三周期7.98 g。这些结果表明,接枝MPF的除油效率不受油馏分类型的影响,可用于各种油馏分的泄漏。第二周期25 g,第三周期7.98 g。这些结果表明,接枝MPF的除油效率不受油馏分类型的影响,可用于各种油馏分的泄漏。

更新日期:2020-10-04
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