Solution Properties of a Novel Polysaccharide Derivative

Abstract

A novel self-assembly polysaccharide derivative; hydrophobically (stearyl alkyl group) and hydrophilically (sulfonic acid salt group) modified hydroxyethylcellulose (HHM-HEC), has the unique rheological properties in aqueous solutions.

Thickening properties and emulsification mechanisms of new derivatives of polysaccharides in aqueous solution

“…Compounds (1) to (3) were prepared by the syntheses reported in [11][12][13][14]. For compound (2), only alkyl chain moieties were introduced, and for compound (3), only sulfonic acid moieties.…”

“…The thickening mechanism of HHM-HEC in aqueous solution has been considered in previous work [9][10][11][12][13][18][19][20] as follows. As the concentration of HHM-HEC increases, intermolecular aggregation (cross-link) occurs at the critical overlap concentration c * of polymer [11], starting with the aggregation of alkyl groups in HHM-HEC, and three-dimensional networks are formed.…”

“…As the concentration of HHM-HEC increases, intermolecular aggregation (cross-link) occurs at the critical overlap concentration c * of polymer [11], starting with the aggregation of alkyl groups in HHM-HEC, and three-dimensional networks are formed. Thus, the viscosity of the solution dramatically increases.…”

“…We have developed the water-soluble amphiphilic polymer HHM-HEC (hydrophobically-hydrophilically modified hydroxyethylcellulose; stearyl alkyl chain-bearing and sulfonic acid salt-bearing hydroxyethylcellulose (HEC)) [11] shows good thickening ability, high salt resistance, and good emulsification and dispersion properties. Thus, it has the potential to make stable O/W emulsions containing various oils and pigments without surfactants.…”

Mechanism of oil-in-water emulsification using a water-soluble amphiphilic polymer and lipophilic surfactant

“…We prepared amphiphilic polymer HHM-HEC (sodium hydroxyethylcellulose hydroxypropyl stearylether hydroxypropyl sulfonate), a good thickening and emulsifying agent [10,11]. It is a strong acidic polyelectrolyte with a high molecular weight.…”