波谱学杂志 ›› 1994, Vol. 11 ›› Issue (1): 71-76.

• 研究论文 • 上一篇    下一篇

以2,2,6,6-四甲基哌啶酮氮氧自由基为自旋探针研究烯烃聚合物的链段运动

王立, 封鳞先, 毛庆革, 杨士林   

  1. 浙江大学高分子科学与工程学系, 杭州 310027
  • 收稿日期:1992-07-11 修回日期:1993-04-10 出版日期:1994-03-05 发布日期:2018-01-20
  • 基金资助:
    The Project supported by National Natural Science Foundation of China

STUDY ON SEGMENT MOTION OF POLY-α-OLEFINES BY USING2,2,6,6-TETRAMETHYLPIPERIDONE-1-OXYL AS SPIN PROBE

Wang Li, Feng Linxian, Mao Qingge, Yang Shilin   

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027
  • Received:1992-07-11 Revised:1993-04-10 Online:1994-03-05 Published:2018-01-20
  • Supported by:
    The Project supported by National Natural Science Foundation of China

摘要: 用混合型Ziegler-Natta催化剂,合成了多种用作原油减阻剂的烯烃聚合物,研究发现Al (iBu)3/AlEt2Cl的摩尔比在2-3/7-8,反应时间约为1h左右,能得分子量较大的聚合物,用2,2,6;6-四甲基哌啶酮氮氧自由基为自旋探针,研究了烯烃聚合物的链段运动,发现减阻效率和链段的柔顺性有密切关系。

关键词: ESR, 减阻剂, 聚烯烃

Abstract: Several kinds of poly-α-olefines were synthesized as drag reduction agents for crude oils.The segment motion of poly-α-olefines was investigated by using 2,2,6,6-tetramethylpiperidone-1-oxyl as spin probe.It is found that the drag reduction effi-ciency of polyolefines is dependent on both their T50G and segment motion.

Key words: ESR, Drag reduction agents, Polyolefines