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

图像处理技术在多糖水溶液粘弹性研究中的应用

• 批准号: 06651058
• 负责人: OGINO Kazuyoshi
• 金额: $ 1.22万
• 依托单位: Chiba Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06651058/
• 关键词: Gellan Gum; Hyaluronic Acid; Viscoelastic Properties; Image Processor; Polysaccharides; Helix-Coil Transition; Aqueous Gel; 多糖類; 水溶液

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.

本文研究了三种类型的结冷胶水溶液，其中Ca^&lt;2+&gt;含量控制在（i）&lt;&lt;0.01wt%和（ii）* 0.5wt%，用离子交换树脂将Na^+置换为K ^+，在（i）的情况下，在0.5 ℃的温度范围内观察到粘度的突然下降<plus-minus>，我们推测这可能是结冷胶分子的螺旋-卷曲转变引起的。在K型结冷胶的情况下，溶液的粘度随着温度升高而降低，通过粘度的最大点。在360- 23040 s的时间内，研究了分子量为1.0 × 10^6和2.0 × 10^6两种类型以及浓度为1.0%、0.75%、0.5%和0.25%四种质量分数的羟丙磺酸水溶液。J_1（ω λ）、J_2（ω λ）-In（ω λ）曲线在整个浓度范围内基本符合Voigt模型，即J^*（复柔量）=J_1-i·J_2。在Cole-Cole图（J^*=alpha[1/{1+（iomega lambda）beta}]）中，所有观察点都可以用一条β = 0.725的圆弧表示，这意味着在分析透明质酸水溶液的粘弹行为时应考虑延迟时间的分布。

项目成果

S.Takahashi & K.Ogino: "Viscoelastic Properties of Hyaluronic Acid Aqueous Solutions(II)" Rep.Progr.Polym.Phys.Jpn. vol 37. 691-692 (1994)

高桥圣

T.Shimazaki: "Mechanical Properties of GellanGum Aqueous Solutions:Abrupt Decrease of η in Narrow Temperature Range" Rep.Prog.Polym.Phys.Japan. 37. 693-694 (1994)

T. Shimazaki：“结冷胶水溶液的机械特性：窄温度范围内 η 的突然降低”Rep.Prog.Polym.Phys.Japan 37. 693-694 (1994)。

K.Ogino: "Viscoelastic Properties of Gellan Gum Acid Aqueous Solutions" Polymer Applications. vol 43. 494-502 (1995)

K.Ogino：“结冷胶酸水溶液的粘弹性”聚合物应用。

S. Takahashi & K. Ogino: "Viscoelastic Properties of Hyaluronic Acid Aqueous Solutions (II)" Rep. Prog. Ploym. PhysJpn. 37. 691-692 (1994)

高桥 S.

T. Shimazaki & K. Ogino: "Viscoelastic Properties of Ca-and Na- Gellan Gum Aqueous Solution" Carbohydrate Polymers. (in press). (1996)

T·岛崎