| 项目编号: | 1554236
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| 项目名称: | CAREER:SusChEM: Design and Discovery of Polymers with Pendant Rings for Membrane Gas Separations |
| 作者: | Haiqing Lin
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| 承担单位: | SUNY at Buffalo
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| 批准年: | 2016
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| 开始日期: | 2016-03-01
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| 结束日期: | 2021-02-28
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| 资助金额: | 500000
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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: | student
; plasticization
; gas permeability
; aging
; superior pure-gas separation performance
; career 1554236-linmembrane technology
; industrial membrane
; energy-efficient gas separation
; material discovery
; gas selectivity
; membrane technology
; career project
; membrane gas separation property
; bottom-up design
; c3h6/c3h8 separation
; membrane separation property
; material design
; industrial composite membrane
; available membrane
; material design guideline
; membrane gas separation
; membrane research
; deteriorated separation performance
; membrane separation
; polymer pendant ring
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| 英文摘要: | CAREER 1554236-Lin
Membrane technology has emerged as an important gas separation technology due to simplicity of operation, compactness, modularity, and high energy efficiency. However, the available membranes for important applications such as CO2/CH4 and C3H6/C3H8 separations are restricted by their deteriorated separation performance when made into industrial thin films operating in the presence of strongly plasticizing components of CO2 and heavy hydrocarbons. These polymers may have superior pure-gas separation performance in thick films of 20 µm or more. However, in the thin films of ~100 nm for industrial composite membranes, these polymers show gas permeability rapidly decreasing with time (i.e., aging). The CO2 and hydrocarbons swell the polymer matrix (i.e., plasticization), leading to weaker size sieving ability and reduced gas selectivity. This project will address these issues by developing a molecular-based mechanistic understanding of the relationship between the polymer structure and thin film properties including permeability, selectivity, aging and plasticization. The integrated educational activities are expected to achieve the following benefits: (a) an educational module for teachers and their students in middle school and high school in the Buffalo Public Schools (a district with a large fraction of students whose background is underrepresented in STEM fields) on membrane technology to solve global climate change; (b) an ongoing polymer workshop to promote the interdisciplinary collaboration on the Buffalo campus and in the Western New York area; (c) improvement in the core courses of Heat and Mass Transfer and Materials Characterization to stimulate students? interests in membrane research; and (d) interdisciplinary training opportunities in polymer synthesis, characterization, membrane separation and modeling for students at the undergraduate and graduate level.
The research project will elucidate the effect of polymer pendant rings and crosslinking in the advanced polymeric materials on membrane gas separation properties, including gas permeability and selectivity, thin film stability against aging, and stability against hydrocarbon induced plasticization. These bulky pendent rings disrupt the polymer chain packing, leading to high free volume and permeability, and they are also expected to slow the chain motion, reducing densification or physical aging. The size of the rings will be conveniently tuned during the chemical synthesis, and substituents will be introduced to rationally design the structure. A bottom-up design of crosslinking networks will be generated, which are expected to be resistant to plasticization. A modified free volume model will be used to elucidate the effect of aging and plasticization on membrane separation properties. This interdisciplinary research program integrating materials discovery, synthesis, characterization, modeling and applications will enrich the fundamental understanding of polymer structure/property correlation for membrane gas separation. It is anticipated that the technical approach and materials design guidelines derived from this project will be directly applied to the development of industrial membranes for energy-efficient gas separation. This CAREER project is also expected to enhance students? awareness of materials design and discovery to solve important practical problems. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/92767
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
Haiqing Lin. CAREER:SusChEM: Design and Discovery of Polymers with Pendant Rings for Membrane Gas Separations. 2016-01-01.
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