CAREER: A Systematic Study of Miscible and Immiscible Polymer Blends Containing a Liquid Crystalline Polymer

职业:含有液晶聚合物的混溶和不混溶聚合物共混物的系统研究

基本信息

  • 批准号:
    9702313
  • 负责人:
  • 金额:
    $ 32.6万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1997
  • 资助国家:
    美国
  • 起止时间:
    1997-07-01 至 2003-01-31
  • 项目状态:
    已结题

项目摘要

- - ~ 9702313 Dadmun In this CAREER award the effect of varying the amount of hydrogen bonding present in a polymer blend containing a liquid crystalline polymer and an amorphous polymer on its phase behavior and engineering properties will be explored. The amorphous polymer will be a copolymer where one monomer (vinyl phenol) can participate in hydrogen bonding while the other monomer can not (styrene). The amount of hydrogen bonding present between the two polymers will be systematically varied by altering the composition of the amorphous copolymer. The effect of this variation on the phase `ehavior and, consequently the engineering properties (i.e. storage and loss modulus, tensile strength, viscosity) of the blend will be determined. It is expected that the change in the amount of hydrogen bonding present will produce systems which exhibit wide range miscibility, primarily immiscibility, and systems where the miscible/immiscible window is accessible. This last system will be utilized to examine the influence of the polymer chain anisotropy of the liquid crystalline polymer on the phase decomposition kinetics. The results will provide a fundamental understanding of the physical chemistry of blends containing a liquid crystalline polymer which can be utilized in the development of novel materials with tunable properties. The preparation of undergraduate and graduate students for careers demands different emphases from an instructor/advisor. Faculty primarily interact with undergraduate students via the classroom while the maturation of graduate students involve learning in both the classroom and the laboratory. Therefore, a description of a teaching philosophy which is followed is presented. A summary of the proposed teaching philosophy is to utilize effective teacher-student interaction to insure that students learn and understand the desired curriculum; to make chemistry accessible through more everyday examples; to inspire students to think a nalytically by detailing complex relationships in lecture and in workshops; and to prepare students for a vocation by introducing them to the methods by which chemical concepts are utilized in industry via industrial visitors and trips to local chemical plants, by attacking and solving problems as groups, and by introducing them to common engineering principles. %%% The proposed research program will examine how manipulation of the microscopic structure of high performance, liquid crystalline polymers can be utilized to create new materials with target properties. It is hoped that the results will provide fundamental information which can be used to guide product development such that the desirable characteristics of liquid crystalline polymers can be efficiently exploited commercially. ***
- - ~ 小行星9702313 在这个CAREER奖中,将探索改变包含液晶聚合物和无定形聚合物的聚合物共混物中存在的氢键的量对其相行为和工程性质的影响。 无定形聚合物将是一种共聚物,其中一种单体(乙烯基苯酚)可以参与氢键,而另一种单体(苯乙烯)不能。 两种聚合物之间存在的氢键的量将通过改变无定形共聚物的组成而系统地变化。 将确定这种变化对共混物的相膨胀的影响,并因此确定共混物的工程性能(即储能模量和损耗模量、拉伸强度、粘度)。预期存在的氢键合量的变化将产生表现出宽范围的可混溶性(主要是不可混溶性)的系统,以及其中可混溶/不可混溶窗口可接近的系统。 这最后一个系统将被用来检查的液晶聚合物的聚合物链各向异性的相分解动力学的影响。结果将提供一个基本的了解,含有液晶聚合物的共混物的物理化学,可用于开发具有可调性能的新型材料。 本科生和研究生的职业生涯的准备需要从教师/顾问不同的重点。 教师主要通过课堂与本科生互动,而研究生的成熟涉及在课堂和实验室学习。 因此,提出了遵循的教学理念的描述。 教学理念是利用有效的师生互动,确保学生学习和理解所需的课程;通过更多的日常实例使化学变得容易理解;通过在讲座和工作坊中详细描述复杂的关系,激发学生进行分析性思考;并通过工业参观者和当地化工厂的参观,向学生介绍化学概念在工业中的应用方法,为学生的职业做好准备,通过群体攻击和解决问题,并通过向他们介绍共同的工程原理。 拟议的研究计划将研究如何操纵高性能液晶聚合物的微观结构,可用于创造具有目标性能的新材料。 希望这些结果将提供可用于指导产品开发的基本信息,使得液晶聚合物的所需特性可被有效地商业化利用。 ***

项目成果

期刊论文数量(0)
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Mark Dadmun其他文献

Mechanism of quiescent nanoplastic formation from semicrystalline polymers
半结晶聚合物形成静态纳米塑料的机制
  • DOI:
    10.1038/s41467-025-58233-3
  • 发表时间:
    2025-03-28
  • 期刊:
  • 影响因子:
    15.700
  • 作者:
    Nicholas F. Mendez;Vivek Sharma;Michele Valsecchi;Vighnesh Pai;Johnny K. Lee;Linda S. Schadler;Alejandro J. Müller;Shelby Watson-Sanders;Mark Dadmun;Guruswamy Kumaraswamy;Sanat K. Kumar
  • 通讯作者:
    Sanat K. Kumar
Molecular design of effective compatibilizers of a crystalline polymer Blend
结晶聚合物共混物的有效增容剂的分子设计
  • DOI:
    10.1016/j.polymer.2025.128385
  • 发表时间:
    2025-05-16
  • 期刊:
  • 影响因子:
    4.500
  • 作者:
    Bailey Eberle;Timothy Taylor;Mark Dadmun
  • 通讯作者:
    Mark Dadmun
Incognito forms of polyethylene small micro and nanoplastics in solvents: Changes in molecular vibrations
溶剂中聚乙烯小微和纳米塑料的隐身形式:分子振动的变化
  • DOI:
    10.1016/j.scitotenv.2025.178923
  • 发表时间:
    2025-03-10
  • 期刊:
  • 影响因子:
    8.000
  • 作者:
    Julie R. Peller;Noah Durlam;Yanni Flaherty;Abbie Valicevic;Christina M. Davis;Shelby Watson;Julien E. Tournebise;Juan A. Medina-Garcia;Mark Dadmun;Stephen P. Mezyk
  • 通讯作者:
    Stephen P. Mezyk

Mark Dadmun的其他文献

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{{ truncateString('Mark Dadmun', 18)}}的其他基金

CAS: Molecular Engineering of Efficient Compatibilizers in Polymer Recycling
CAS:聚合物回收中高效增容剂的分子工程
  • 批准号:
    2104982
  • 财政年份:
    2021
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Cultivating Conjugated Polymers as Novel Light Responsive Materials
培育共轭聚合物作为新型光响应材料
  • 批准号:
    1808946
  • 财政年份:
    2018
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Developing the Foundation for Novel Light-Responsive Materials: Tuning Physical Properties of Conjugated Polymer Systems by Illumination
开发新型光响应材料的基础:通过照明调节共轭聚合物系统的物理性能
  • 批准号:
    1409034
  • 财政年份:
    2014
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Using Neutron Scattering to Elucidate the Thermodynamics of Conjugated Polymer:Fullerene Nanocomposites
利用中子散射阐明共轭聚合物:富勒烯纳米复合材料的热力学
  • 批准号:
    1005987
  • 财政年份:
    2010
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Rational Design and Synthesis of Targeted Nanostructures in Organic Photovoltaics
有机光伏中目标纳米结构的合理设计与合成
  • 批准号:
    0932666
  • 财政年份:
    2009
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Enhancing Functional and Structural Properties of Polymer Nanocomposites by Controlling Dispersion and Interfaces
通过控制分散和界面增强聚合物纳米复合材料的功能和结构性能
  • 批准号:
    0706323
  • 财政年份:
    2007
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Multiply Bound Polymer Chains: Novel Chemistry for Improved Interfacial Properties
多重键合聚合物链:改善界面性能的新型化学
  • 批准号:
    0304807
  • 财政年份:
    2003
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Continuing Grant
Impact of Specific Counterion Binding on Surfactant Aggregates and Polyelectrolytes: Beyond Electrostatic Screening Effects
特定抗衡离子结合对表面活性剂聚集体和聚电解质的影响:超越静电屏蔽效应
  • 批准号:
    0316132
  • 财政年份:
    2003
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Continuing Grant
Optimization of Interactions and Dispersions in Multi-Component Polymer Systems: Blends and Nanocomposites
多组分聚合物体系中相互作用和分散的优化:共混物和纳米复合材料
  • 批准号:
    0241214
  • 财政年份:
    2003
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant
Acquisition of Chromatography Equipment for Polymeric Materials Research and Education
购置色谱设备用于高分子材料研究和教育
  • 批准号:
    0216816
  • 财政年份:
    2002
  • 资助金额:
    $ 32.6万
  • 项目类别:
    Standard Grant

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