| 项目编号: | 1511896
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| 项目名称: | UNS: Electric-Field Alignment of Immiscible Polymer Blends with Dispersed Nanoparticles for Mesoporous Reactive Membranes |
| 作者: | Paul Millett
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| 承担单位: | University of Arkansas
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| 批准年: | 2014
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| 开始日期: | 2015-07-01
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| 结束日期: | 2018-06-30
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| 资助金额: | USD411948
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Engineering - Chemical, Bioengineering, Environmental, and Transport Systems
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| 英文关键词: | electric field
; polymer phase
; thin film
; particle
; phase
; polymer film apparatus
; experiment
; phase-separating polymer
; phase-separating polymer blend
; membrane-like structure
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| 英文摘要: | CBET - 1511896
PI: Millett, Paul
This project uses experiments and numerical simulation to examine the dynamics of thin films of phase-separating polymers that contain nanoparticles. When phase separation occurs, the nanoparticles segregate to the interfaces between polymer phases, which locks the configuration of the phases into place. To control the spatial morphology of the thin film, an electric field is applied to align the phases and the particles perpendicular to the film. Then, one of the polymer phases can be dissolved away, leaving a membrane-like structure containing channels that are lined with the particles. The particles can be made on the scale of nanometers and they can be made catalytic, which gives rise to a variety of technological capabilities, including using the resulting membranes for chemical separations, catalysis, and in energy-related devices such as photovoltaics and light-emitting diodes.
The goal of the project is to understand the microstructural morphology of melted, phase-separating polymer blends containing particles in thin films and how its evolution can be controlled by an electric field. The project will use a polymer film apparatus that can simultaneously impose elevated temperatures and out-of-pane electric fields. Experiments will be integrated with Brownian Dynamics/Cahn-Hilliard simulations to model the evolution of the thin film morphology. The experiments and simulations will combine to identify parameter ranges that optimize the desired thin film morphology. Parameters that will be investigated include the strength of the electric field required to align phases and particles, volume fractions of the polymer phases and the resulting channel dimensions, particle size and volume fraction, and film thickness. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94253
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Paul Millett. UNS: Electric-Field Alignment of Immiscible Polymer Blends with Dispersed Nanoparticles for Mesoporous Reactive Membranes. 2014-01-01.
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