Studies of the Structure-Property Relationship for Naturally Occurring and Synthetic Polymers in Dilute and Concentrated Solutions

稀溶液和浓溶液中天然聚合物和合成聚合物的结构-性能关系研究

• 批准号: 06403027
• 负责人: TERAMOTO Akio
• 金额: $ 22.91万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06403027/
• 关键词: Semiflexible Polymers; Polysaccharides; Helical Structure; Conformation; Scattering Function; Polymer Liquid Crystals; Solution Properties; Molecular Interaction; 天然高分子; 多糖類; 星型高分子; 界面物性; ダイナミックス; 分子間相互作用

This study was performed to construct an imaging plate-small angle X-ray scattering (IP-SAXS) apparatus and to explain dilute and concentrated solution properties of naturally occurring and synthetic polymers with a variety of conformations by analyzing results from IP-SAXS and other measurements such as light scattering, viscosity, and optical rotation. The main results obtained are summarized as follows. 1.SAXS measurements on aurous colloid and polystirene solutions substatiated the usefulness of the IP-SAXS apparatus constructed. 2.The radii of gyration and scattering functions determined by IP-SAXS for polycarbonate and hyaluronate solutions were consistent with light scattering radii and viscosity data, and all were quantitatively explained by current theories based on the wormlike chain. 3.The quasi-two-parameter theory was found to describe excluded-volume effects on the radius of gyration and the intrinsic viscosity for semiflexible polymers, regardless of chain stiffness. 4.T … More he ternary cluster integral for polystirene in trans-decalin near the theta point was found for the first time to be almost independent of temperature. 5.Helix reversals in chiral polyisocyanates were described by the current statistical mechanical theory. 6.It was confirmed by dielectric dispersion that the structure of the ordered phase in aqueous solutions of triple-helical schizophyllan is formed by hydrogen bonding between glucose side chains and water molecules. 7.Light scattering and viscosity behavior of isotropic solutions of poly (hexyl isocyanate) (PHIC) were shown to be described by theories based on the wormlike chain model. 8.Solutions of two cellulose phenylcarbamate derivatives formed liquid crystals, and their phase boundary concentrations were theoretically explained with the wormlike chain parameters determined from dilute solution studies. 9.The interfacial tension between coexisting isotropic and nematic phases of PHIC-toluene solutions and also the alignment of molecular chains were successfully determined by experiment. Less

本研究的目的是构建一个成像板小角X射线散射（IP-SAXS）装置，并通过分析IP-SAXS和其他测量，如光散射，粘度和旋光度的结果来解释稀释和浓缩溶液的性质，天然存在的和合成的聚合物与各种构象。所得主要结果概括如下。1. SAXS测量金胶体和聚苯乙烯溶液取代IP-SAXS装置的实用性。2.聚碳酸酯和透明质酸盐溶液的回转半径和散射函数的IP-SAXS测定的光散射半径和粘度数据是一致的，所有的定量解释的蠕虫状链的基础上，目前的理论。3.准双参数理论被发现来描述排斥体积的影响的回转半径和半柔性聚合物的特性粘度，无论链刚度。4.T ...更多信息 首次发现聚苯乙烯在反式十氢萘中的三元团簇积分在θ点附近几乎与温度无关。5.用统计力学理论描述了手性多异氰酸酯中的位阻反转。6.介电色散实验证实了三螺旋藻多糖水溶液中的有序相结构是由葡萄糖侧链与水分子之间的氢键作用形成的。7.研究了聚异氰酸己酯（PHIC）各向同性溶液的光散射和粘度行为。8.两种纤维素苯基氨基甲酸酯衍生物的溶液形成液晶，和它们的相边界浓度的理论解释与蠕虫状链参数确定从稀溶液的研究。9.通过实验成功地测定了PHIC-甲苯溶液中共存的各向同性相和均相之间的界面张力以及分子链的排列。少

项目成果

Akihiko Tsuboi: "Dilute-Solution Behavior of Cellulose Tris(3,5-dimethyl-phenylcarbamate)" Polymer Journal. 27. 1219-1229 (1995)

Akihiko Tsuboi：“纤维素三（3,5-二甲基苯基氨基甲酸酯）的稀溶液行为”聚合物杂志。

Yasushi Nakata: "Conformation of Amylose and Excluded Volume Effects on Its Chain Dimensions" Polymer Journal. 26. 1085-1089 (1994)

Yasushi Nakata：“直链淀粉的构象及其链尺寸的排除体积效应”聚合物杂志。

則末尚志: "高分子実験の基礎-分子特性解析" 共立出版, 109 (1994)

Takashi Norisue：“聚合物实验基础 - 分子表征”Kyoritsu Shuppan，109 (1994)

Mark M. Green: "A Helical Polymer with a Cooperative Response to Chiral Information" Science. 268. 1860-1866 (1995)

Mark M. Green：“一种对手性信息具有协同响应的螺旋聚合物”科学。

Takashi Norisuye: "Molecular Characteristics of Functional Polysaccharides" Macromol. Symp.99. 31-42 (1995)

Takashi Norisuye：“功能性多糖的分子特征”Macromol。