树枝状聚合物与芘分子在水溶液中的相互作用  

The Mutual Effect between Dendrimer and Pyrene in Solution

作　　者：王星媛[1,2] 叶仲斌[3,4] 吴敬恒 

机构地区：[1]川庆钻探工程有限公司钻采工程技术研究院,四川广汉618300 [2]油气田应用化学四川省重点实验室,四川广汉618300 [3]油气藏地质及开发工程国家重点实验室(西南石油大学),四川成都610500 [4]西南石油大学化学化工学院,四川成都610500 [5]川庆钻探工程有限公司川西钻探公司,四川成都610051

出　　处：《油田化学》2016年第1期74-78,共5页Oilfield Chemistry

基　　金：国家专项重大课题子课题"聚合物强制拉伸水渗速溶技术研究"(项目编号2011ZX05024-004-04)

摘　　要：为揭示疏水改性树枝状聚合物在水溶液中的聚集行为,使用芘荧光探针研究了疏水缔合聚合物(AP-P4)和树枝状聚合物在水溶液中与芘分子的相互作用,通过环境扫描电镜对比分析了两种聚合物在水溶液中的微观形貌。结果表明,随着聚合物浓度的增加,聚合物在水溶液中形成的疏水微区总量增加,芘分子在疏水微区的平均包容量达到最大值时对应的AP-P4和树枝状聚合物的质量浓度分别为1300 mg/L和600 mg/L。树枝状聚合物溶液包容芘分子的总量大于AP-P4,其所形成的疏水微区数量大于AP-P4。聚合物质量浓度大于870 mg/L时,树枝状聚合物对芘分子的平均包容量小于AP-P4。树枝状聚合物在水溶液中形成的三维网络结构中存在层铺状、致密排列的小网络结构,这种紧密的结构降低了树枝状聚合物的空间容积,使其对芘分子的平均包容量大幅降低。In order to study the aggregation behavior of hydrophobic modification dendrimer in solution, fluorescence probe was used to research the mutual effect between pyrene and hydrophobic associating polymer AP-P4 or dendrimer. The microsturcture of two kinds of polymers in solution was compared through ESEM. The results showed that the amount of hydrophobic micro-domain formed in solution increased with increasing concentration of polymer. When the average capacity of hydrophobic micro-domain solubilizing pyrene molecule reached maximum, the mass concentratioin of AP-P4 and dendrimer was 1300 mg/L and 600 mg/L respectively. The capacity of dendrimer solution sloubilizing pyrene molecule was stronger than that of AP-P4 solution, and the number of hydrophobic micro-domain formed was larger too. While polymer concentraion was more than 870 mg/L, the average capacity of dendrimer solubilizing pyrene molecule was less than that of AP-P4. Comparing the microstructure of dendrimer and AP-P4 through ESEM, there were small network structure stacking, spreading and connecting with each other in three-dimensional network structure formed by dendrimer in solution, which increased the whole microstructure tightness but reduced the hydrophobica micro-domain volume of dendrimer and the average capacity of hydrophobic micro-domain solubilizing pyrene molecule.

关 键 词：芘分子 树枝状聚合物 相互作用 疏水微区 

分 类 号：O631[理学—高分子化学] O572.21[理学—化学]