利用秸秆纤维制备高吸水材料的研究

Preparation of super absorbent resin made from straw fiber

以麦秸秆为原料,通过添加丙烯酸类单体和蒙脱土,采用水溶液聚合法制备了高吸水性材料。考察了麦秸秆的预处理方式(酸处理、碱处理和醚化处理)及交联剂用量对高吸水性材料性能的影响,以红外光谱和扫描电镜表征高吸水性材料的结构。研究结果表明,采用醚化方式处理的麦秸秆制备的高吸水材料性能最好,随交联剂用量的增加,材料的吸水性呈先增大后减小的趋势。丙烯酸类单体成功发生了接枝聚合反应,高吸水材料呈现典型的三维网络结构。

Super absorbent resin(SAR) was prepared via aqueous solution polymerization with wheat straw,acrylic monomer and montmorillonite.The influences of treatment methods of wheat straw and the dosage of crosslinking agent on absorbency of super absorbent resin were investigated.The structure of SAR was characterized by FT-IR and SEM.Results showed that the performance of SAR with etherified wheat straw is best.The absorbency of resin is increased and then decreased along with an increase of the dosage of crosslinking agent.Graft polymerization take place between acrylic monomer and wheat straw.SAR shows a typical three-dimensional network.