坡缕石/聚丙烯酰胺无机-有机杂化絮凝剂的合成、表征与应用

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (8): 1567.

坡缕石/聚丙烯酰胺无机-有机杂化絮凝剂的合成、表征与应用

王猛¹, 钱锦文¹, 郑宝庆¹, 杨骛远¹, 蒋唯峰¹, 方佐¹, 叶瑛²

1. 浙江大学高分子科学与工程系, 杭州310027;
2. 浙江大学地球科学系, 杭州310027

收稿日期:2003-05-06 出版日期:2004-08-24 发布日期:2004-08-24
基金资助:
国家自然科学基金(批准号:50173034)资助

Synthesis,Characterization and Application of Palygorskite/Polyacrylamide Inorganic-organic Hybrid Flocculent

WANG Meng¹, QIAN Jin-Wen¹, ZHENG Bao-Qing¹, YANG Wu-Yuan¹, JIANG Wei-Feng¹, FANG Zuo¹, YE Ying²

1. Department of Polymer Science and Engineering,
2. Department of Earth Science, Zhejiang University, Hangzhou 310027, China

Received:2003-05-06 Online:2004-08-24 Published:2004-08-24

摘要/Abstract

摘要： 将酸活化坡缕石(PGS)与氯化乙醇胺(EACl)所得氯化乙醇胺改性坡缕石(PGS-EACl)与高价铈盐(Ce⁴⁺)组成氧化还原非均相引发体系,引发丙烯酰胺单体聚合得到了坡缕石/聚丙烯酰胺(PGS/PAM)无机-有机杂化物.用¹HNMR、FTIR、粘度法和电导法对杂化物进行了结构表征,表明杂化物中存在PGS^Θ⊕NH₃R离子键合作用.考察了PGS-EACl用量、聚合反应时间和单体浓度对杂化物特性粘数的影响.由PGS/PAM杂化絮凝剂分别处理高岭土和氧化铁红两种配制废水,发现杂化絮凝剂的絮凝效果明显优于纯PAM絮凝剂.

关键词: 无机-有机杂化物, 坡缕石, 聚丙烯酰胺, 絮凝剂

Abstract: Acid-activated palygorskite(PGS) reacted with ethanolamine hydrochloride(EACl),and the modified palygorskite(PGS-EACl) was obtained. The polymerization of acrylamide was initiated by heterogeneous redox initiator system, composed of reductive agent PGS-EACl together with oxidant Ce⁴⁺,and the palygorskite/polyacrylamide(PGS/PAM) hybrid was obtained. The product was characterized by ¹H NMR,FTIR,viscosimetry and specific conductivity method,and the result showed an abnormal viscosity and conductivity behavior in water. It can be interpreted in terms of ion bond structure(PGS^Θ⊕ NH₃R) in PGS/PAM hybrid. The influence of dosage of PGS-EACl, polymerization time,and monomer concentration on the [ η ] of the PGS/PAM hybrid was investigated,and it is found that the [ η ] of the hybrid increases with increasing polymerization time differing from conventional free-radical polymerization. Flocculating effect of PGS/PAM hybrid was better than that of pure PAM for both mass fraction 0.25% kaolin suspension and mass fraction 0.5% hematite suspension,respectively.

Key words: Inorganic-organic hybrid, Palygorskite, Polyacrylamide, Flocculent

中图分类号:

TrendMD:

王猛, 钱锦文, 郑宝庆, 杨骛远, 蒋唯峰, 方佐, 叶瑛. 坡缕石/聚丙烯酰胺无机-有机杂化絮凝剂的合成、表征与应用. 高等学校化学学报, 2004, 25(8): 1567.

WANG Meng, QIAN Jin-Wen, ZHENG Bao-Qing, YANG Wu-Yuan, JIANG Wei-Feng, FANG Zuo, YE Ying . Synthesis,Characterization and Application of Palygorskite/Polyacrylamide Inorganic-organic Hybrid Flocculent. Chem. J. Chinese Universities, 2004, 25(8): 1567.

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