摘要
研究了低浓度白芨葡甘聚糖(BSG)溶液的流变性与多糖浓度、外加电解质浓度、pH值及温度等的相关性。结果表明,BSG水溶液在2～16g.L-1时是假塑性流体。在低剪切速率下(γ.<1s-1),溶液的表观黏度η迅速降低;剪切速率增大(γ.>1s-1),溶液的η达到稳定(ηs)。在高剪切速率下溶液的ηs随浓度的增加而增加。向溶液中加入电解质,或者改变pH值,都不会影响ηs。对质量浓度为16g.L-1的BSG溶液,升高温度,η降低,η与温度的关系符合Arrhenius方程。
The effect of polysaccharide concentration,electrolyte concentration,pH value and temperature（T） on the rheological behaviors of Blettila striata polysaccharide solutions was studied.The solutions of polysaccharide concentration between 2 and 16 g·L-1 were pseudoplastic fluids.The apparent viscosity（η） of solutions decreased with increasing shear rate（γ·） in the range of γ·1s-1;while η became constant（ηs） for γ·1s-1.ηs rose with polysaccharide concentration,while salt concentration and pH had nothing to do with ηs.ηof solution at 16 g·L-1 lowered with rising T.The relationship between η and T conformed to the Arrhenius equation.
出处
《山东大学学报（理学版）》
CAS
CSCD
北大核心
2010年第3期15-18,共4页
Journal of Shandong University(Natural Science)
基金
国家高技术研究发展计划资助项目(2007AA100401)
国家十一五支撑计划课题资助项目(2006BAD06B05)
关键词
白芨
葡甘聚糖
流变性
黏度
Blettila striata
polysaccharide
rheology
viscous
