Mechanical Model of Globular Transition in Polymers

Tricard Simon; Shepherd Robert F.; Stan Claudiu A.; Snyder Phillip W.; Cademartiri Rebecca; Zhu Danny; Aranson Igor S.; Shakhnovich Eugene I.; Whitesides George M.

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Mechanical Model of Globular Transition in Polymers

机译：聚合物球状过渡机械模型

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In complex, multicomponent systems, polymers often undergo phase transitions between distinct conformations. This paper reports a millimeter-scale granular model of coil-to-globule transitions: one "polymer" chain-a cylinders-on-a-string "pearl necklace"-and many spheres, all shaken on a horizontal surface. It is possible to describe the behavior of this granular system by using formalisms generally used in statistical physics of polymers. Two sets of experiments allowed the observation of first-and second-order coil-to-globule transitions. The model shows that the competition between long- and short-range interactions leads to a first-order transition. Well-designed granular system represents another kind of approach to the study of polymer phase transitions and might inspire future designs of polymer-like mesoscale systems.

机译：在复杂的多组分系统中，聚合物通常经常经历不同构象之间的相变。本文报告了一个毫米级粒度模型的线圈 - 球形过渡：一个“聚合物”链 - 圆柱形的圆柱形“珠饰” - 以及许多球体，所有的球体都在水平表面上摇动。通过使用通常用于聚合物的统计物理学中使用的形式主义，可以描述该粒状系统的行为。两组实验允许观察第一和二阶线圈到球状过渡。该模型表明，长期和短程互动之间的竞争导致一阶转换。精心设计的颗粒系统代表了一种研究聚合物相变的另一种方法，并且可以激发聚合物样Mescle系统的未来设计。

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来源
《ChemPlusChem》 |2015年第1期|共5页
作者
Tricard Simon; Shepherd Robert F.; Stan Claudiu A.; Snyder Phillip W.; Cademartiri Rebecca; Zhu Danny; Aranson Igor S.; Shakhnovich Eugene I.; Whitesides George M.;
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作者单位

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Argonne Natl Lab Argonne IL 60439 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

Harvard Univ Dept Chem &

Chem Biol Cambridge MA 02138 USA;

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原文格式 PDF
正文语种 eng
中图分类化学;
关键词
granular physics; molecular dynamics; phase transitions; polymers; statistical mechanics;

机译：粒状物理;分子动力学;相变;聚合物;统计力学;

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专利

1. Mechanical Model of Globular Transition in Polymers [J] . Tricard Simon, Shepherd Robert F., Stan Claudiu A., ChemPlusChem . 2015,第1期

机译：聚合物球状过渡机械模型
2. Dynamical heterogeneities and mechanical non-linearities: Modeling the onset of plasticity in polymer in the glass transition [J] . Masurel R. J., Gelineau P., Lequeux F., The European physical journal, E. Soft matter . 2017,第12期

机译：动态异质性和机械非线性：在玻璃过渡中的聚合物中的塑性作用建模
3. Modelling of thermomechanical behaviour of fibrous polymeric composite materials subject to relaxation transition in the matrix [J] . Valeriy Pavlovich Matveenko, Nikolay Alexandrovich Trufanov, Oleg Yurievich Smetannikov, Mechanics of Advanced Materials and Modern Processes . 2016,第1期

机译：纤维聚合物复合材料在基体中发生弛豫转变的热力学行为建模
4. MODELING THERMOSET POLYMERS AT THE ATOMIC SCALE: PREDICTION OF CURING, GLASS TRANSITION TEMPERATURES AND MECHANICAL PROPERTIES [C] . Jeffrey M. Sanders, Thomas J. L. Mustard, David J. Giesen, Composites and Advanced Materials Expo . 2016

机译：在原子尺度下建模热固性聚合物：预测固化，玻璃过渡温度和机械性能
5. Thermomechanical Constitutive Modeling of Shape Memory Behavior in Polymers based on Physics of Glass Transition and Entropy Elasticity. [D] . Kulkarni, Mandar Madhukar. 2015

机译：基于玻璃化转变和熵弹性的聚合物形状记忆行为的热机械本构模型。
6. A statistical mechanical model for hydrogen exchange in globular proteins. [O] . D. W. Miller, K. A. Dill 1995

机译：球状蛋白质中氢交换的统计力学模型。
7. Modelling of thermomechanical behaviour of fibrous polymeric composite materials subject to relaxation transition in the matrix [O] . 2016

机译：纤维聚合物复合材料在基体中发生弛豫转变的热力学行为建模

Mechanical Model of Globular Transition in Polymers

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