Application of Image Processor Technics to the Study of Viscoelastic Properties of Polysaccharide Aqueous Solutions

已研究的三种Gellan Gum解决方案类型，在Ca^<2+>中，内容被控制为（i） <<0.01 wt %和（ii）* 0.5 wt %，以及Na^+ toK^+的替换被离子交换区域执行。在（i）的情况下，在<加减>0.5} C的温度范围内明显减少。我们假定这可能会被螺旋线圈的转变所捕获，Gellan Gum分子。在K型加仑口香糖的情况下，解决方案的能见度降低，即温度降低，通过能见度的最大限度。Hyaluronic acid equous solutions，其中两种分子重量， 1.0*10 ^6和2.0*10 ^6，以及四种浓度为1.0、0.75、0.5和0.25 wt%的混合物，在360-23、040年代的时期内被研究。J_1 （omega lambda）， J_2 （omega lambda）-In（omega lambda）这些解决方案的图几乎由Voigt模型表达，这里J^*（复杂兼容性） = J_1-i·J_2在整个集中范围内。在Cole-Cole plot的情况下（J^*=alpha[1/{1+（iomega lambda）beta}]，所有观察点都可以用beta= 0.725来表示，这意味着，在返回时间的分配应该考虑到Hyaluronic acid等解决方案的视觉弹性行为。

Three types of Gellan Gum aqueous solutions were studied, in which Ca^<2+>-contents were controlled to (i) <<0.01wt% and (ii)*0.5wt%, and the replacement of Na^+ toK^+was performed by ion-exchange resin.In the case of (i), abrupt decreasings in viscosity in the temperature range of <plus-minus>0.5ﾟC were observed, and we assumed that this may be caused by Helix-Coil transition of Gellan Gum molecules. In the case of K-type Gellan Gum, viscosity of solutions decrease as the temperature was raised, through the maximum point of viscosity. Hyaluronic acid aqueous solutions, of which two types of molecular weight, 1.0*10^6 and 2.0*10^6 and four kinds of concentration of 1.0,0.75,0.5 and 0.25 wt% were studied in the period of 360-23,040s. J_1 (omega lambda), J_2 (omega lambda)-In (omega lambda) plot of these solutions were nearly expressed by Voigt model, here J^*(complex compliance) =J_1-i・J_2 in the whole concentration range. In the case of Cole-Cole plot (J^*=alpha[1/{1+(iomega lambda)beta}], all observed points could be expressed as an arc with beta=0.725.This means that distribution of retardation time should be taken into consideration of viscoelastic behaviors of Hyaluronic acid aqueous solutions.