接枝链嵌段结构对可聚合嵌段聚醚与丙烯酰胺接枝共聚物水溶液性质的影响研究.doc

文档介绍：
接枝链嵌段结构对可聚合嵌段聚醚与丙烯
酰胺接枝共聚物水溶液性质的影响研究#
李林御,方申文,陈凯凤,马永张,李珂怡**
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(西南石油大学化学化工学院,新都 610500)
摘要:可聚合嵌段聚醚(SMM)与丙烯酰胺的接枝共聚物(PAM-g-SMM)具有一定表面活性
和热缔合性。本文以表面张力和温度-水动学半径关系为考察目标,分别研究了 SMM 中环
氧乙烷(EO)/环氧丙烷(PO)摩尔比和 EO/PO 嵌段方式对 PAM-g-SMM 表面活性和热缔
合性的影响。结果表明,接枝共聚物中 EO/PO 摩尔比越小,表面活性越高;EO/PO 摩尔比
相同时,接枝链末端 PO 的含量越高,表面活性越高;接枝共聚物中 EO/PO 摩尔比越小,
水动力半径越大,且对温度越敏感;EO/PO 摩尔比相同时,EO/PO 嵌段方式对其热缔合性
质影响不明显。
关键词:可聚合嵌段聚醚;表面活性;水动力学半径
中图分类号:+1
Effect of block structure of graft on the aqueous solution
properties of graft copolymer of polymerizable block
polyether and acrylamide
LI Linyu, FANG Shenwen, CHEN Kaifeng, MA Yongzhang, LI Keyi
(Chemistry and Chemical Engineering School,Southwest Petroleum University ,Xindu 610500)
Abstract: : Graft copolymer of polymerizable block polyether (SMM) and acrylamide (PAM-g-
SMM) is surface-active and thermo-asscoicative. The effect of EO/PO mole ratio and EO/PO
block pattern in SMM on the surface activity and thermo-asscoicativity of PAM-g-SMM was
studied by using the surface tension and relationship between temperature and its Rh as the index.
The results showed that the surface activity of PAM-g-SMM increased with the decrease of
EO/PO mole ratio and the content of PO block at the end of the SMM. Its temperature sensitivity
and Rh increased with the PO content in SMM, but the EO/PO block pattern had no influence on