TY - JOUR
T1 - Physico-chemical characterization of spruce galactoglucomannan solutions
T2 - Stability, surface activity and rheology
AU - Xu, Chunlin
AU - Willför, Stefan
AU - Sundberg, Kenneth
AU - Petterson, Charlotte
AU - Holmbom, Bjarne
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2008/1
Y1 - 2008/1
N2 - The physico-chemical properties of the industrially-recovered spruce galactoglucomannans were studied. The solubility after filtration was determined by GC. Short- and long-time stability of galactoglucomannan water solutions of different concentrations was investigated with a light-scattering-based Turbiscan instrument. The effects of filtration, NaCl addition, heat treatment and deacetylation on stability were studied. During the measurements, commercial Konjac glucomannan was studied for the sake of comparison. The surface activity and apparent viscosity of galactoglucomannan solutions were also studied. Additionally, the rheological properties of the solutions were investigated. Both storage and loss moduli increased at concentrations higher than 1%. Elastic behavior was displayed throughout the frequency, at high concentration. Concentration regimes with three regions were applied to explain the solution properties.
AB - The physico-chemical properties of the industrially-recovered spruce galactoglucomannans were studied. The solubility after filtration was determined by GC. Short- and long-time stability of galactoglucomannan water solutions of different concentrations was investigated with a light-scattering-based Turbiscan instrument. The effects of filtration, NaCl addition, heat treatment and deacetylation on stability were studied. During the measurements, commercial Konjac glucomannan was studied for the sake of comparison. The surface activity and apparent viscosity of galactoglucomannan solutions were also studied. Additionally, the rheological properties of the solutions were investigated. Both storage and loss moduli increased at concentrations higher than 1%. Elastic behavior was displayed throughout the frequency, at high concentration. Concentration regimes with three regions were applied to explain the solution properties.
KW - Rheological properties
KW - Solution properties
KW - Spruce galactoglucomannan
KW - Stability
KW - Surface activity
UR - http://www.scopus.com/inward/record.url?scp=42549139722&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:42549139722
SN - 0576-9787
VL - 41
SP - 51
EP - 62
JO - Cellulose Chemistry and Technology
JF - Cellulose Chemistry and Technology
IS - 1
ER -