Dynamics and Viscoelasticity of Semi-Flexible and Liquid-Crystalline Polymers

半柔性液晶聚合物的动力学和粘弹性

基本信息

  • 批准号:
    9973976
  • 负责人:
  • 金额:
    $ 15万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1999
  • 资助国家:
    美国
  • 起止时间:
    1999-07-01 至 2003-06-30
  • 项目状态:
    已结题

项目摘要

9973976MorseThis is a new grant that will support theoretical studies of the molecular kinetics and rheological properties of solutions and melts of semiflexible polymers, in both isotropic and liquid-crystalline phases. Current theoretical understanding of polymer dynamics is based to a large extent upon a few classic models that assume the polymers act either as completely flexible coils or as rigid rods. A large class of semiflexible polymers exists, however, with a degree of rigidity intermediate between these two extremes, and whose dynamical behavior is not well understood. In particular, this work has potential application to a variety of biopolymers, improving our understanding of the effects of the biopolymer structure and elasticity on biological function. This proposed research is intended to provide a unified understanding of the dynamical behavior of solutions of worm-like chains over a wide range of physical parameters, which should serve as a theoretical basis for the analysis of future experiments. Theoretical studies and Brownian simulations of dilute solutions of worm-like chains will examine the dependence of the linear viscoelastic shear modulus and other dynamic response functions upon frequency and chain length. Large-scale Langevin dynamics simulations will be used to quantify the effects of interchain interactions and entanglement in non-dilute solutions of worm-like chains, and to identify the limits of various parameter regimes and corresponding theoretical approaches.This is a new grant that will support theoretical modeling of the dynamics and viscoelastic properties of semiflexible polymers in both isotropic and liquid-crystal phases. Current theoretical understanding of polymer dynamics is based to a large extent upon a few classic models that assume the polymers act either as completely flexible coils or as rigid rods. A large class of semiflexible polymers exists, however, with a degree of rigidity intermediate between these two extremes, and whose dynamical behavior is not well understood. In particular, this work has potential application to a variety of biopolymers, improving our understanding of the effects of the biopolymer structure and elasticity on biological function. This proposed research is intended to provide a unified understanding of the dynamical behavior of solutions of worm-like chains over a wide range of physical parameters, which should serve as a theoretical basis for the analysis of future experiments.
9973976以上这是一项新的资助,将支持对各向同性和液晶相的半柔性聚合物溶液和熔体的分子动力学和流变性的理论研究。目前对聚合物动力学的理论理解在很大程度上是基于一些经典模型,这些模型假设聚合物要么作为完全柔性的线圈,要么作为刚性杆。然而,存在一大类半柔性聚合物,其刚性程度介于这两个极端之间,其动力学行为尚不清楚。特别是,这项工作具有潜在的应用于各种生物聚合物,提高了我们对生物聚合物的结构和弹性对生物功能的影响的理解。这项研究旨在对蠕虫链的解在广泛的物理参数范围内的动力学行为提供统一的理解,这将为未来的实验分析提供理论基础。对蠕虫链稀解的理论研究和布朗模拟将考察线性粘弹性剪切模数和其他动态响应函数对频率和链长的依赖关系。大规模的朗之万动力学模拟将被用来量化蠕虫链的非稀溶液中的链间相互作用和纠缠的影响,并确定各种参数的限制和相应的理论方法。这是一个新的授权,将支持各向同性和液晶相中半柔性聚合物的动力学和粘弹性的理论建模。目前对聚合物动力学的理论理解在很大程度上是基于一些经典模型,这些模型假设聚合物要么作为完全柔性的线圈,要么作为刚性杆。然而,存在一大类半柔性聚合物,其刚性程度介于这两个极端之间,其动力学行为尚不清楚。特别是,这项工作具有潜在的应用于各种生物聚合物,提高了我们对生物聚合物的结构和弹性对生物功能的影响的理解。这项研究旨在对蠕虫链的解在广泛的物理参数范围内的动力学行为提供统一的理解,这将为未来的实验分析提供理论基础。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

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David Morse其他文献

Differential gene expression analysis identifies a group of defensin-like peptides from Solanum chacoense ovules with in vitro pollen tube attraction activity
  • DOI:
    10.1007/s11103-025-01608-3
  • 发表时间:
    2025-06-17
  • 期刊:
  • 影响因子:
    3.800
  • 作者:
    Yang Liu;Valentin Joly;Mohamed Sabar;Daniel P. Matton;David Morse
  • 通讯作者:
    David Morse
Fugacium Spliced Leader Genes Identified from Stranded RNA-Seq Datasets
从搁浅 RNA-Seq 数据集中鉴定出 Fugacium 剪接前导基因
  • DOI:
    10.3390/microorganisms7060171
  • 发表时间:
    2019-06
  • 期刊:
  • 影响因子:
    4.5
  • 作者:
    Yue Song;Bahareh Zaheri;Min Liu;Sunil Kumar Sahu;Huan Liu;Wenbin Chen;Bo Song;David Morse
  • 通讯作者:
    David Morse
For guidance on citations see FAQs.
有关引用的指导,请参阅常见问题解答。
  • DOI:
  • 发表时间:
    2010
  • 期刊:
  • 影响因子:
    0
  • 作者:
    David King;Guido Sautter;David Morse;L. Penev;Jordan Biserkov;Teodor Georgiev;Dave Roberts;Vince Smith
  • 通讯作者:
    Vince Smith
Evaluation of Pericardial Tissues from Assorted Species as a Tissue-Engineered Heart Valve Material
不同物种心包组织作为组织工程心脏瓣膜材料的评价
Differences in oxidase and esterase activities involved in pheromone biosynthesis in two species ofChoristoneura
  • DOI:
    10.1007/bf01014083
  • 发表时间:
    1990-05-01
  • 期刊:
  • 影响因子:
    1.800
  • 作者:
    David Morse;Edward A. Meighen
  • 通讯作者:
    Edward A. Meighen

David Morse的其他文献

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{{ truncateString('David Morse', 18)}}的其他基金

Phase Transitions and Dynamics in Block Copolymers
嵌段共聚物的相变和动力学
  • 批准号:
    1310436
  • 财政年份:
    2013
  • 资助金额:
    $ 15万
  • 项目类别:
    Continuing Grant
Theory and Simulation of Correlations in Polymer Liquids: Beyond the Self-Consistent Field Approximation
聚合物液体相关性的理论与模拟:超越自洽场近似
  • 批准号:
    0907338
  • 财政年份:
    2009
  • 资助金额:
    $ 15万
  • 项目类别:
    Continuing Grant
Advanced Technology for Radar Sounding of Polar Ice
极地冰雷达探测先进技术
  • 批准号:
    0086316
  • 财政年份:
    2001
  • 资助金额:
    $ 15万
  • 项目类别:
    Standard Grant

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  • 批准号:
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Collaborative Research: Changes and Impact of Right Ventricle Viscoelasticity Under Acute Stress and Chronic Pulmonary Hypertension
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  • 批准号:
    2244994
  • 财政年份:
    2023
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  • 批准号:
    2244996
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DMS/NIGMS 1: Viscoelasticity and Flow of Biological Condensates via Continuum Descriptions - How Droplets Coalesce and Wet Cellular Surfaces
DMS/NIGMS 1:通过连续体描述的生物凝聚物的粘弹性和流动 - 液滴如何聚结和润湿细胞表面
  • 批准号:
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DEVISE: Engineered viscoelasticity in regenerative microenvironments
DEVISE:再生微环境中的工程粘弹性
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    2023
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Collaborative Research: Changes and Impact of Right Ventricle Viscoelasticity Under Acute Stress and Chronic Pulmonary Hypertension
合作研究:急性应激和慢性肺动脉高压下右心室粘弹性的变化和影响
  • 批准号:
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Inflammatory phenotype, senescence, and viscoelasticity imaging of macrophages in HIV
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