Simulation study of the network structure and viscoelasticity of slide-ring gel and thread-like micelle

滑环凝胶和线状胶束的网络结构和粘弹性模拟研究

• 批准号: 23540474
• 负责人: TAKIMOTO Jun-ichi
• 金额: $ 3.24万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23540474/
• 关键词: 環動ゲル; スリップリンク; 非線形弾性; 絡み合い; 剛直性; ブレンド; 絡み合い抽出; 高速ずり流動; 分子鎖拡散; 界面スリップ; 誘電緩和; 紐状ミセル; シミュレーション; 管模型; 高分子ブレンド; 会合性高分子; 応力ひずみ曲線; 分子動力学; 膨潤

A model of slid-ring gel (a gel in which polymer chains can slide along themselves at the cross links) is proposed and nonlinear elastic response is calculated. The results show that the stress is lower than that of chemical gels especially for anisotropic deformations (such as uniaxial elongation) due to the pulley effect. If the translational entropy of the ring molecules remaining on the polymer chains is taken into account, the stress approaches to that of chemical gel.It is now well known that stiff polymers entangle more easily than flexible polymers, and have thinner tube diameter. We have studied blends of stiff and flexible chains by molecular dynamics and primitive path analysis, and found that the tube diameters of both types of chains are virtually identical in the blend. A blending rule for the tube diameter is proposed.

提出了一种滑环凝胶（聚合物链可以在交联处沿自身滑动的凝胶）模型，并计算了其非线性弹性响应。结果表明，由于皮带轮效应，特别是在单轴拉伸等各向异性变形时，其应力低于化学凝胶。如果考虑到留在聚合物链上的环分子的平移熵，则应力接近于化学凝胶的应力。现在众所周知，刚性聚合物比柔性聚合物更容易缠结，而且管径更细。我们通过分子动力学和原始路径分析研究了刚性链和柔性链的共混物，发现两种链的管径在共混物中几乎相同。提出了管径的混合规则。

项目成果

Primitive Path Analysis of Entangled Polymer Blends

缠结聚合物共混物的原始路径分析

• 发表时间: 2012
• 作者: Ito;Y.; Nagoe;A.; Fujimori;H.; Takemura;T;山本隆夫;J. Takimoto
• 通讯作者: J. Takimoto

環動ゲルの非線形弾性のシミュレーション

环动凝胶非线性弹性模拟

• 发表时间: 2011
• 作者: Kazuhiko Mase;Eiichi Kobayashi;Akira Nambu;Takuhiro Kakiuchi;Osamu Takahashi;Kiyohiko Tabayashi;Joji Ohshita;Shogo Hashimoto;Masatoshi Tanaka;Shin-ichi Nagaoka;滝本淳一
• 通讯作者: 滝本淳一

Measuring Slip at a Polymer/polymer Interface during Three-layer Flow

三层流动期间聚合物/聚合物界面处的滑移测量

• 发表时间: 2013
• 期刊: Nihon Reoroji Gakkaishi
• 影响因子: 1.3
• 作者: R. Komuro;S. K. Sukumaran;M. Sugimoto;K. Koyama
• 通讯作者: K. Koyama

Effects of fluctuations of cross-linking points on viscoelastic properties of associating polymer networks

交联点波动对缔合聚合物网络粘弹性的影响

• DOI: 10.1007/s00397-012-0656-4
• 发表时间: 2012
• 期刊: Rheologica Acta
• 影响因子: 2.3
• 作者: T. Indei;J. Schieber;J. Takimoto
• 通讯作者: J. Takimoto

Multichain and single-chain models for entangled polymer dynamics, Polymer Dynamics : Entanglements and Architectures

纠缠聚合物动力学的多链和单链模型，聚合物动力学：纠缠和结构

• 发表时间: 2011
• 作者: S. K. Sukumaran;A. E. Likhtman
• 通讯作者: A. E. Likhtman