羧甲基纤维素接枝AM/DMDAAC共聚物的溶液性质  

SOLUTION PROPERTIES OF AMPHOTERIC CMC/AM DMDAAC GRAFT COPOLYMERS

作　　者：张黎明[1] 尹向春[1] 李卓美[1] 

机构地区：[1]高分子材料工程国家重点实验室,中山大学高分子研究所

出　　处：《油田化学》1998年第4期304-308,共5页Oilfield Chemistry

基　　金：中国科学院纤维素化学开放研究实验室基金;广东省自然科学基金

摘　　要：采用自由基溶液聚合法制备了羧甲基纤维素与丙烯酰胺／二甲基二烯丙基氯化铵的两性接枝共聚物（ＣＡＤ）。探讨了ＣＡＤ的溶解性质、在水溶液和盐溶液中的流变性质以及在不同浓度ＮａＣｌ、ＫＣｌ、ＭｇＣｌ２、ＣａＣｌ２与钙镁钠混合盐溶液中的粘度性质。结果表明；ＣＡＤ具有较好的溶解性，其溶液属假塑性流体，有较强的抗盐能力，大分子链间正。The solubility and the viscosity nature of CAD samples with different structural parameters, which were the graft copolymers of anionic carboxymethylcellulose (CM) with acrylamide(AM) and cationic monomer dimethyldiallylammonium choride (DMDAAC), in water and salt solutions were studied. The results showed that CAD samples had good solubility and good tolerance to NaCl、KCl、MgCl 2、CaCl 2 and mixed salts(NaCl+MgCl 2+CaCl 2). The good tolerance to the salts resulted from CAD chains containing both cationic and anionic groups. The rheological behavior of CAD samples with different structural parameters in water and 4% NaCl solution was typical pseudoplstic. The parameters k and n in the power law model η a=k n-1 were dependent on the cationic/anionic contents.

关 键 词：两性聚合物 纤维素衍生物 钻井液处理剂 

分 类 号：TE254.4[石油与天然气工程—油气井工程]