|
KMID : 0370019930070000037
|
|
Chung-Ang Journal of Pharmacal Sciences
1993 Volume.7 No. 0 p.37 ~ p.44
|
|
|
Rheological Characteristics of Aqueous Solution of Korean Sodium Alginate
|
|
|
|
|
Abstract
|
|
|
|
Rheological behaviors of sodium alginate solution were invetigated by using Brookfield rotational viscometer. 3.0% sodium alginate solution showed a tendency for dilatancy with yield value at 25℃ and 0.3∼30 rpm. The observed ranges of equivalent apparent viscosity and equilibrium yield value were 2000∼8810cps and 1330∼5200 dyne cm^-2, respectively. 2.0% sodium alginate solution that was freshly prepared, showed both dilatancy, in which the apparent viscosity increases with a decrease in rpm. On the other hand, 2.0% sodium alginate solution after 3 month´s storage showed dilatancy, in which the apparent viscosity increases with an increase in rpm and the apparent viscosity decreases with a decrease in rpm. Variation of consistency of 1.0 and 1.5% sodium alginate solution with temperature was found to follow Andrade´s viscosity equation and the apparent energy of activation to flow as calculated on the basis of this equation was 11.3kcal/g·mole and 25.3kcal/g·mole respectively.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|