高等真菌发酵液的一种有效流变测量方法

STUDY ON RHEOLOGICAL PROPERTIES OF CROSSLINKING SYSTEM OF ACRYLIC MICROEMULSION AT ROOM TEMPERATURE

高等真菌（如灵芝、云芝）发酵液具有高浓度、大颗粒、颗粒柔性和呈非牛顿液体性质但表观粘度不很大等特征。因此，目前市售粘度计或流变仪均难以对其进行有效的流变测量。通过对ＮＤＪ２Ｇ型旋转圆筒粘度计进行改装、标定和修正，使其量程变小，灵敏度提高，且转子可以无级变速。

A copolymer is prepared from methyl methacrylate, butylacrylate, acrylic acid and β hydroxyethyl methacrylate. DSC and GPC were used to analyze the composition and the molecular weight distrubution of the copolymer. The microemulsion is obtained by neutralizing the copolymer with DEAE and its rheological property was tested by rotating viscometer. The relationship between shearing stress ( τ ) and shearing rate ( D ) is studied. It was found that n was nearly equal to 1 for microemulsion, a New...