疏水改性阳离子型丙烯酰胺共聚物的微结构与絮凝性能  

Microstructure and flocculation properties of hydrophobically associating acrylamide-modified cationic copolymer

作　　者：钟传蓉[1] 何文琼[2] 赖立[2] 罗平亚[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室,四川新都610500 [2]成都理工大学材料与化学化工学院,四川成都610059

出　　处：《化工学报》2007年第8期2138-2143,共6页CIESC Journal

基　　金：中国博士后科学基金项目(20060391033);国家重点基础研究发展计划项目(2005CB221302)~~

摘　　要：The hydrophobically associating copolymers,poly(BS/AM/DMDAAC)(PBAD) were synthesized from acrylamide (AM),butyl styrene (BS) and dimethyldiallyammonium chloride (DMDAAC) by the micellar free radical copolymerization technique.The copolymers were characterized with UV and FT-IR.The atomic force microscope(AFM) measurement showed that aggregates had been formed in the aqueous solution of 0.005 g.dl -1 PBAD, and with the increase of PBAD concentration, the number and size of aggregates increased due to the intermolecular hydrophobic association of butylphenyl groups.The optimum flocculant concentration of PBAD was 0.005 g·dl -1 in the aqueous solution of 3% diatomite and the transmittance was 96.5%.The NaCl concentration obviously influenced the bridging and adsorption behavior of the copolymer for celite suspensions, and calcium and aluminium ions strengthened the flocculation effect of the polymer.The hydrophobically associating copolymers, poly（BS/AM/DMDAAC） （PBAD） were synthesized from acrylamide （AM）, butyl styrene （BS） and dimethyldiallyammonium chloride （DMDAAC） by the micellar free radical copolymerization technique. The copolymers were characterized with UV and FTIR. The atomic force microscope （AFM） measurement showed that aggregates had been formed in the aqueous solution of 0. 005 g. dl^-1 PBAD, and with the increase of PBAD concentration, the number and size of aggregates increased due to the intermolecular hydrophobic association of butylphenyl groups. The optimum flocculant concentration of PBAD was 0. 005 g ·dl^-1 1 in the aqueous solution of 3% diatomite and the transmittance was 96.5%. The NaCl concentration obviously influenced the bridging and adsorption behavior of the copolymer for celite suspensions, and calcium and aluminium ions strengthened the flocculation effect of the polymer.

关 键 词：丁基苯乙烯 疏水缔合 溶液微结构 阳离子絮凝剂 

分 类 号：TB39[一般工业技术—材料科学与工程]