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碱脲体系中纤维素基气凝胶的制备

Liaoning Chemical Industry(2019)

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Abstract
利用环保的碱脲体系溶解棉短绒,以N,N-亚甲基双丙烯酰胺为交联剂,通过溶胶-凝胶法、冷冻干燥制备纤维素基气凝胶.采用红外光谱表征气凝胶的化学结构,扫描电子显微镜观察气凝胶的内部微观结构,并考察其对亚甲基蓝的吸附性能.结果表明:低温碱脲溶解体系中制备的纤维素基气凝胶内部呈薄片状交织堆叠结构,具有多孔性.将纤维素基气凝胶用于吸附30 mg/L亚甲基蓝溶液时,气凝胶对亚甲基蓝的平衡吸附容量可达63.3 mg/g.
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