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Cationic β-cyclodextrin Polymer Applied to a Dual Cyclodextrin Polyelectrolyte Multilayer System

Cationic β-cyclodextrin Polymer Applied to a Dual Cyclodextrin Polyelectrolyte Multilayer System

Jatupol Junthip, Nicolas Tabary, Laurent Leclercq, Bernard Martel

Carbohydr Polym. 2015 Aug 1;126:156-67.

PMID: 25933534

Abstract:

A polyelectrolyte multilayer film (PEM) based on cationic and anionic β-cyclodextrin polyelectrolytes was coated onto a textile substrate for future drug delivery purposes. We firstly synthesized a novel cationic β-cyclodextrin polymer (polyEPG-CD) by crosslinking β-cyclodextrin (βCD) with epichlorohydrin (EP) under basic conditions, in the presence of glycidyltrimetrylammonium chloride (GTMAC) as cationizing group. The influence of preparation conditions has been investigated in order to preferably obtain a water soluble fraction whose charge density and molecular weights were optimal for the layer-by-layer (LbL) deposition process. The different cationic cyclodextrin polymers obtained were characterized by FTIR, NMR, colloidal titration, conductimetry, thermogravimetric analysis and size exclusion chromatography. Besides, the counterpart polyelectrolyte was a β-cyclodextrin polymer crosslinked with citric acid, polyCTR-CD, whose synthesis and characterization have been previously reported. Finally we realized the Layer by Layer (LbL) build-up of the PEM coating onto the textile support, using the dip coating method, by alternatively soaking it in cationic polyEPG-CD and anionic polyCTR-CD solutions. This multilayer self-assembly was monitored by SEM, gravimetry and OWLS in function of both polyelectrolytes concentrations and ratios. Solutions parameters such as pH, ionic strenght were also discussed.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS741352	β-Cyclodextrin polymer			Price

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