NMR-STUDY OF POLYMER SURFACTANT INTERACTION IN THE SYSTEM HPMC SDS/WATER/

Citation
A. Hammarstrom et Lo. Sundelof, NMR-STUDY OF POLYMER SURFACTANT INTERACTION IN THE SYSTEM HPMC SDS/WATER/, Colloid and polymer science, 271(12), 1993, pp. 1129-1133
Citations number
9
Categorie Soggetti
Polymer Sciences
Journal title
ISSN journal
0303402X
Volume
271
Issue
12
Year of publication
1993
Pages
1129 - 1133
Database
ISI
SICI code
0303-402X(1993)271:12<1129:NOPSII>2.0.ZU;2-U
Abstract
The interaction between the nonionic water soluble polysaccharide hydr oxypropylmethyl cellulose (HPMC) and the low molecular weight amphiphi le sodiumdodecyl sulphate (SDS) has been studied by NMR H-1-chemical s hift measurements and by self-diffusion NMR measurements. The polymer concentration has been kept sufficiently dilute to avoid coil overlap and the SDS composition range goes from zero up to well above the norm al CMC point. Although a different fraction was used, the present resu lts agree well with previous results for the same system obtained by t echniques other than NMR and show very clear break points that can be related to the polymer surfactant interaction. Furthermore, it can be inferred from the chemical shift measurements that the structure of th e micellar clusters are similar whether polymer is present or not. Fro m a combination of chemical shift and self diffusion measurements it i s also found that neither the size nor the shape of the clusters seem to change significantly in the composition interval investigated.