| 项目编号: | 1510600
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| 项目名称: | SusChEM: Development of Polymer-grafted Lignin Superplasticizers |
| 作者: | Newell Washburn
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| 承担单位: | Carnegie-Mellon University
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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: | USD386020
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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: | polymer-grafted lignin
; new superplasticizer
; lignin chemistry
; project
; low-carbon
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| 英文摘要: | CBET - 1510600
PI: Washburn, Newell R.
Hydraulic cement is a major contributor to global carbon dioxide emissions into the atmosphere. Low carbon dioxide cements are available but not widely used, because they are difficult to process. This project will develop a new superplasticizer that can be added to low-carbon dioxide hydraulic cement to improve the cement's processing characteristics while reducing carbon dioxide emissions. The new superplasticizer will be formulated using a process developed by the PI in which synthetic polymers are grafted onto lignin, a biopolymer derived from plants. Use of the new superplasticizer could reduce water use and improve the performance of low-carbon dioxide cements, both of which would reduce the environmental impact of construction.
The project will test the hypothesis that the complexity of lignin chemistry will enable the superplasticizer to adsorb onto a broad range of low-carbon dioxide cements. The project will identify chemistry-structure-property relationships governing the dispersant properties of polymer-grafted lignin in tuning the rheological properties of cementitious suspensions. The project will compare lignin chemistries and grafting variables to determine how they affect aqueous suspension properties, examine the adsorption of polymer-grafted lignin on cement particles as a function of grafting variables and charge, and establish effects of polymer-grafted lignin on the hydration of low-carbon dioxide cements and the formation of high-strength cement phases. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94231
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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: | |
Newell Washburn. SusChEM: Development of Polymer-grafted Lignin Superplasticizers. 2014-01-01.
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