Abstract Radiation induced graft polymerization (RIGP) was used to develop glycidyl methacrylate (GMA) grafted nanohybrid polymer. The absorbed dose and monomer concentration significantly affect the degree of grafting on vinyl modified sepiolite (VMS). Maximum grafting of 665% was achieved at optimized absorbed dose and monomer concentration. Post-polymerization modification of the nanohybrid with maximum grafting was carried out with sodium sulfite. Structural studies by ATR-FTIR and XRD analysis of the synthesized nanohybrids confirmed modification at different stages. The morphological changes studied by field emission scanning electron microscopy (FESEM) showed the conversion of sepiolite fiber into globular structure. Thermal gravimetric analysis (TGA) revealed an increase in thermal stability of the GMA grafted nanohybrid with the increase in grafting yield. The sulfonated form of the nanohybrid showed highest adsorption for Cu(II) at 4 pH value which indicates its potential as metal ion adsorbent for the recovery of metals from wastewater.

中文翻译：

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甲基丙烯酸缩水甘油酯在海泡石上的辐射诱导接枝聚合

摘要 辐射诱导接枝聚合（RIGP）被用于开发甲基丙烯酸缩水甘油酯（GMA）接枝纳米杂化聚合物。吸收剂量和单体浓度显着影响乙烯基改性海泡石（VMS）的接枝程度。在优化的吸收剂量和单体浓度下实现了 665% 的最大接枝率。用亚硫酸钠对纳米杂化物进行最大接枝的聚合后改性。通过 ATR-FTIR 和 XRD 分析合成的纳米杂化物的结构研究证实了不同阶段的改性。通过场发射扫描电子显微镜 (FESEM) 研究的形态变化表明海泡石纤维转变为球状结构。热重分析 (TGA) 显示 GMA 接枝纳米杂化物的热稳定性随着接枝产率的增加而增加。纳米杂化物的磺化形式在 4 pH 值下对 Cu(II) 的吸附量最高，这表明其作为金属离子吸附剂从废水中回收金属的潜力。