Materials World Network: Dynamics in Polymer Nanocomposites Containing Hard, Soft and Mobile Nanoparticles

材料世界网络：含有硬、软和移动纳米粒子的聚合物纳米复合材料的动力学

• 批准号: EP/J018503/1
• 负责人: Nigel Clarke
• 金额: $ 38.1万
• 依托单位: University of Sheffield
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FJ018503%2F1
• 关键词: Materials; World; Network; Dynamics; Polymer

Polymer nanocomposites, namely mixtures of nanoparticles dispersed in a polymer matrix, have gained rapid attention for both industrial and fundamental studies since their introduction in the early 1990's. One of the first high impact applications was provided by Toyota Central Research who demonstrated that the addition of a small amount of layered silicate greatly improved the mechanical properties of nylon. In fact, the commercial use of polymer nanocomposites with improved elastic modulus, electrical conductivity, flame retardation and thermal conductivity is being explored across many economic sectors including aerospace, electronics, and sporting applications. The main objective of this research is to provide fundamental knowledge of polymer dynamics in the presence of spherical nanoparticles using a coordinated experimental and theoretical approach. This proposed Materials World Network contains expertise in nanoparticle synthesis, nanocomposite fabrication, imaging, depth profiling, simulation, theory and neutron scattering to address how the presence of nanoparticles with sizes comparable to, and smaller than, the individual polymers impacts on dynamics. This MWN team has considerable experience in polymer nancomposites and is committed to working together to explore how polymer diffusion is correlated with structure in these fascinating and commercially-important materials.The proposed Materials World Network is well-positioned for groundbreaking insights into the physics of polymer nanocomposites that are likely to have positive impact on the emerging industry of polymer nanocomposites. While our proposed research will focus on spherical nanoparticles, our findings will be applicable to a broader range of nanoparticles. Understanding the polymer dynamics is particularly important when designing fabrication methods for nanocomposites. When a master batch containing a high concentration of nanoparticles is melt mixed with a neat polymer, the rate of polymer diffusion is critical for establishing a homogeneous concentration. For example, one strategy for balancing the high cost of nanoparticles with their attractive properties involves coating latex particles with nanoparticles and then sintering the particles to achieve good interfacial strength. The material strength is determined by the interdiffusion of polymers across the interfacial region to form entanglements and the mechanism for this will be established by the proposed research.

聚合物纳米复合材料，即分散在聚合物基体中的纳米颗粒的混合物，自从它们在20世纪90年代初被引入以来，已经获得了工业和基础研究的迅速关注。丰田中央研究所（Toyota Central Research）提供了第一批高冲击应用之一，他们证明添加少量层状硅酸盐可以大大改善尼龙的机械性能。事实上，具有改进的弹性模量、导电性、阻燃性和导热性的聚合物纳米复合材料的商业用途正在许多经济部门中探索，包括航空航天、电子和体育应用。本研究的主要目的是提供聚合物动力学的基础知识，在球形纳米粒子的存在下，使用协调的实验和理论方法。这个提议的材料世界网络包含纳米颗粒合成，纳米复合材料制造，成像，深度分析，模拟，理论和中子散射方面的专业知识，以解决尺寸与单个聚合物相当或更小的纳米颗粒的存在如何影响动力学。该MWN团队在聚合物纳米复合材料方面拥有丰富的经验，致力于共同探索聚合物扩散与这些迷人且具有商业重要性的材料的结构之间的关系。拟议中的材料世界网络非常适合对聚合物纳米复合材料物理学的开创性见解，可能对新兴的聚合物纳米复合材料行业产生积极影响。虽然我们提出的研究将集中在球形纳米粒子，但我们的发现将适用于更广泛的纳米粒子。在设计纳米复合材料的制造方法时，了解聚合物动力学特别重要。当含有高浓度纳米颗粒的母料与纯聚合物熔融混合时，聚合物扩散速率对于建立均匀浓度是关键的。例如，平衡纳米颗粒的高成本与其吸引人的特性的一种策略涉及用纳米颗粒涂覆胶乳颗粒，然后烧结颗粒以实现良好的界面强度。材料强度取决于聚合物在界面区域的相互扩散以形成缠结，并且其机制将通过拟议的研究来确定。

项目成果

Fast Polymer Diffusion through Nanocomposites with Anisotropic Particles.

• DOI: 10.1021/mz500344h
• 发表时间: 2014-08
• 期刊: ACS macro letters
• 影响因子: 5.8
• 作者: Jihoon Choi;N. Clarke;K. Winey;R. Composto

Nanoparticle Brush Architecture Controls Polymer Diffusion in Nanocomposites

• DOI: 10.1021/ma500235v
• 发表时间: 2014-04-08
• 期刊: MACROMOLECULES
• 影响因子: 5.5
• 作者: Choi, Jihoon;Hore, Michael J. A.;Composto, Russell J.
• 通讯作者: Composto, Russell J.

Entanglements and Dynamics of Polymer Melts near a SWCNT

• DOI: 10.1021/ma3007637
• 发表时间: 2012-08
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: A. Karatrantos;R. Composto;K. Winey;M. Kröger;N. Clarke

Influence of the Bound Polymer Layer on Nanoparticle Diffusion in Polymer Melts

• DOI: 10.1021/acsmacrolett.6b00649
• 发表时间: 2016-10-01
• 期刊: ACS MACRO LETTERS
• 影响因子: 7.015
• 作者: Griffin, Philip J.;Bocharova, Vera;Winey, Karen I.
• 通讯作者: Winey, Karen I.

Polymer diffusion in a polymer nanocomposite: effect of nanoparticle size and polydispersity

• DOI: 10.1039/c2sm25269d
• 发表时间: 2012-01-01
• 期刊: SOFT MATTER
• 影响因子: 3.4
• 作者: Gam, Sangah;Meth, Jeffrey S.;Composto, Russell J.
• 通讯作者: Composto, Russell J.