树枝状疏水缔合聚合物的吸附行为  

ADSORPTION BEHAVIORS OF DENDRITIC HYDROPHOBICALLY ASSOCIATING POLYMERS

作　　者：朱诗杰 叶仲斌 宋瑞 何东 高源 李俊[1] Zhu Shijie;Ye Zhongbin;Song Rui;He Dong;Gao Yuan;Li Jun(Chongqing University of Science & Technology, Chongqing 401331, China;Chengdu Technological University, Chengdu 611730, Sichuan, China;CNOOC Ener Tech-Drilling & Production Co., Tianjin 300452, China;Zhejiang Provincial Energy Group Company LTD., Hangzhou 310000, Zhejiang, China)

机构地区：[1]重庆科技学院石油与天然气工程学院,重庆401331 [2]成都工业学院,四川成都611730 [3]中海油能源发展股份有限公司工程技术分公司,天津300452 [4]浙江省能源集团有限公司,浙江杭州310000

出　　处：《精细石油化工》2021年第3期12-17,共6页Speciality Petrochemicals

基　　金：重庆市基础研究与前沿探索项目(cstc2018jcyjAX0342);重庆市教育委员会科学技术研究项目(KJQN201901540)。

摘　　要：以部分水解聚丙烯酰胺(HPAM)为对比,研究了溶液浓度、接触时间、石英砂颗粒粒径对树枝状聚合物DHAP溶液吸附量的影响。结果表明:HPAM符合Langmuir等温线吸附和准二级吸附动力学,在石英砂表面进行化学吸附,具有稳定的单分子层吸附特征,单位面积的平衡吸附量为1.17~1.62μg/cm^(2);树枝状聚合物DHAP符合Langmuir等温线吸附、准二级吸附动力学和Elovich模型,在石英砂上的单位面积吸附量为6.44~8.45μg/cm^(2)。树枝状聚合物DHAP的吸附机理包括以氢键、静电作用等在石英砂表面所产生的一级化学吸附、分子间缔合作用影响下的二级缠绕、树枝状结构的空间展布扩宽吸附层厚度。Compared with hydrolyzed polyacrylamide(HPAM),the effects of solution concentration,contact time and quartz sand particle size on the adsorption capacity of the dendrimer DHAP solutions were studied.The results showed that the adsorption kinetics of HPAM conformed to Langmuir isotherm and pseudo second order adsorption kinetics.The equilibrium adsorption capacity per unit area is 1.171.62μg/cm^(2).However,the dendritic polymer DHAP conforms to Langmuir isotherm adsorption characteristics,quasi second order kinetics and elovich model.The adsorption capacity per unit area of DHAP on quartz sand rangesfrom 6.44 to 8.45μg/cm^(2).The result indicates that the adsorption mechanism of dendritic polymer DHAP is composed of the first-order chemical adsorption produced by hydrogen bond and electrostatic interaction on the surface of quartz sand and the second-order winding under the influence of intermolecular association.The spatial distribution of branched structure widens the thickness of adsorption layer.

关 键 词：树枝状聚合物 吸附机理 等温线吸附模型 吸附动力学模型 

分 类 号：TE357[石油与天然气工程—油气田开发工程]