To develop glutamic acid derived cross‐linked polymeric organogels for dye adsorption from aqueous media, dimethyl 2‐(methacrylamido)pentanedioate (Glu‐MAC) is polymerized using diethylene glycol dimethacrylate as cross‐linker via the reversible addition‐fragmentation chain transfer (RAFT) technique to synthesize cross‐linked polymeric organogels with pendant glutamate moieties. The mechanical properties of organogels are examined by rheological study. The organogels exhibit higher value of storage modulus (G′) than the loss modulus (G′′) within the linearity limits of deformation, and strong dependence of G′ values on the extent of cross‐linking in the gel matrix. Field emission scanning electron microscopy shows porous structure of the gel matrix, therefore, organogels are able to exhibit swelling behaviors in organic solvents such as dichloromethane, N,N‐dimethylformamide, tetrahydrofuran, acetone, and methanol. Dye adsorption properties of these organogels are investigated using different aqueous dye solutions, such as crystal violet (CV), malachite green (MG), rhodamine‐B, and uranine. The gels show high dye adsorption capacities (≥97%) toward cationic dyes like CV and MG.

中文翻译：

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谷氨酸衍生有机胶的合成及其在水介质中去除染料的应用

为了开发谷氨酸衍生的交联聚合物有机凝胶以从水性介质中吸附染料，使用可逆加成-断裂链转移（RAFT）将二甲基丙烯酸二乙二醇酯作为交联剂，聚合了2-（甲基丙烯酰胺基）戊二酸二甲酯（Glu-MAC）。技术合成具有侧链谷氨酸部分的交联聚合物有机凝胶。通过流变学研究检查有机凝胶的机械性能。在变形的线性范围内，有机凝胶的储能模量（G '）高于损耗模量（G ''），并且对G的依赖性强'值在凝胶基质中的交联程度。场发射扫描电子显微镜显示凝胶基质的多孔结构，因此，有机凝胶能够在有机溶剂（例如二氯甲烷，N，N-二甲基甲酰胺，四氢呋喃，丙酮和甲醇）中表现出溶胀行为。使用不同的染料水溶液（例如结晶紫（CV），孔雀石绿（MG），若丹明B和尿素）研究了这些有机凝胶的染料吸附性能。凝胶对阳离子染料（如CV和MG）表现出很高的染料吸附能力（≥97％）。