日用化学工业2001，Vol.31Issue(1)：28-34,7.
聚合物-表面活性剂复合体系的核磁共振研究
NMR Study of Polymer-Surfactant Mixing Systems
刘雪锋 1方云 1杨扬 2范歆1
作者信息
- 1. 无锡轻工大学化学与材料工程学院，江苏无锡214036
- 2. 江苏石油化工学院测试中心，江苏常州213016
- 折叠
摘要
Abstract
Study on polymer- surfactant mixing systems by NMR methods were introduced in detail. 13C- NMR, 13C and 23Na+ relaxation rate, paramagnetic relaxation NMR (PR- NMR) and two dimensional nuclear overhauser enhancement NMR (2D - NOESY - NMR) were aplied in studying interaction of polymer- surfactant cluster. The carbon bridge of C12BE in PVP - C12BE clusters was associated with the methine (α), methylene (β) carbons in the polymer backbone and the methyl carbon attached with the N in the PVP ring , which was proven by 13C - NMR. The results of13C - NMR and 23Na+ NMR showed that some chains of the PEG in PEGSDS were directly absorbed at the hydrocarbon/water interface of micelles, whereas most of them formed loops in the surrounding water.2D - NOESY - NMR confirmed that PEG penetrated partly into the interior of the SDS mieelles. PR - NMR results indicated that only a small fraction of PEG located in electric double layer of micellar surface and the stoichiometric composition of PEG - SDS cluster is 1.9EO units per SDS molecule. Cluster structure of PVP - AS looded ilke a necklace whereas PVP - SDS likes a swollen cage.关键词
表面活性剂/聚合物-表面活性剂/复合体系/相互作用/团簇/13C-NMR弛豫研究Key words
surfactant/polymer/surfactant/mixing system/interaction between molecules/cluster/13C- NMR/relaxation rate分类
化学化工引用本文复制引用
刘雪锋,方云,杨扬,范歆..聚合物-表面活性剂复合体系的核磁共振研究[J].日用化学工业,2001,31(1):28-34,7.
