黄原胶流变学性质的实验研究  

Experimental Research of Rheological Properties of Xanthan Gum

作　　者：唐中山[1] 苏红军[1] 徐世艾[1] 

机构地区：[1]烟台大学化工制造工程山东省重点实验室,山东烟台264005

出　　处：《烟台大学学报（自然科学与工程版）》2008年第2期130-133,共4页Journal of Yantai University(Natural Science and Engineering Edition)

基　　金：国家自然科学基金资助项目(20476086;10272093);国家863重点资助项目(2006A030203)

摘　　要：研究了不同浓度黄原胶水溶液的流变学特性,回归了稠度系数K和流变参数n与黄原胶浓度Cp的关系.结果表明:溶液浓度较低时,黄原胶水溶液为牛顿性流体;随着浓度的增加,逐渐转变为假塑性流体.可以分别描述为黄原胶浓度Cp的函数:当0<Cp≤30 g/L时,K=1.128C1p.572.当0<Cp≤8 g/L时,n=0.485-0.16 lnCp;当8 g/L<Cp≤30 g/L时,n=0.075+0.041 lnCp.Rheological characteristics of different xanthan gum solutions are studied. The regressions between consistency index K, flow behaviour index n and concentration of xanthan gum Cp are also investigated. The results show that, the properties of xanthan gum solution are considered to be Newtonian fluid as its concentration is lower; however, its properties can be described as pseudoplastic fluid with increase of the concentration. K,n can be described as the function of Xanthan gum＇s concentration respectively, the correlations are as follows： 0〈Cp≤30g/L,K=1.128Cp^1.572.0〈Cp≤8g/L,n=0.485-0.16lnCp;8g/L〈Cp≤30g/L,n=0.075＋0.041lnCp.

关 键 词：黄原胶 流变学 假塑性流体 多糖 

分 类 号：TQ01[化学工程]