Synthesis of Metallocene Poly(ether Esters) from Reaction of Group IVB and VB Metallocene Dichlorides With Glycyrrhetinic Acid

By : Bin Xu

Page No: 343-352

Abstract
A supramolecular recognizing system was constructed based on the water-soluble -cyclodextrinepichlorohydrin polymer (-CD-EP) as host and hydrophobically modified polyacrylamide of P(AM-NaA-OAM) as guest. P(AM-NaA-OAM) was synthesized using micellar polymerization and -CD-EP polymer was produced by the reaction of -CD with epichlorohydrin (EP) in an alkaline medium. Viscosity, rheology and fluorescent probe were used to study the host-guest interaction of the inclusion complexes between P(AM-NaA-OAM) and -CD-EP polymer. The inclusion complex of P(AM-NaA-OAM) and -CD-EP polymer has obvious privilege in viscosity enhancement under and around critical aggregation concentration (CAC) of P(AM-NaA-OAM). Both the inclusion association and intermolecular hydrophobic association can exist in the inclusion complex. At CD/OAM ratio of 1, a maximum of 2.3-fold enhancement of apparent viscosity was observed. The inclusion complex showed better salt resistant performance compared with P(AM-NaA-OAM) because the increasing polarity forced more and more intermolecular association to form inclusion association.

Author :
Bin Xu : College of Chemistry and Chemical Engineering, Binzhou University, Binzhou, Shandong, 256600, China