Mechanics of Bioderived-Cellulose-Based Ultra-Strong and Ultra-Tough Materials

生物纤维素基超强超韧材料的力学

• 批准号: 1936452
• 负责人: Teng Li
• 金额: $ 45万
• 依托单位: University of Maryland, College Park
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-08-01 至 2024-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1936452&HistoricalAwards=false
• 关键词: Mechanics; Bioderived; Cellulose; Based; Ultra

This research program will focus on exploring design strategies to achieve ultra-strong and ultra-tough materials based on bioderived cellulose. Cellulose is the most abundant biopolymer on Earth and has long been used to produce paper products. Cellulose has remarkable mechanical properties, making it as a promising building block for high performance functional and structural materials. While plants are the common source of cellulose, it requires extra physical and chemical processing to isolate and purify cellulose from plants, and such processing can potentially decrease the mechanical performance of plant cellulose. Moreover, trees often take years or decades to mature, posing substantial time cost to plant cellulose. Bioderived Cellulose produced through a microscopic organism enabled fermentation process is chemically 100% pure with much better properties than plant cellulose and can be obtained at industrial scale at a low cost within days. This research program aims to use both experimental and computational studies to investigate the fundamental science that governs the superb mechanical properties of bioderived cellulose. The success of this research program can potentially lead to a low-cost and long-sought solution in designing high performance engineering materials. The research will also be complemented by establishing a well-rounded educational and outreach program including research opportunities for graduate and undergraduate students, internship for underrepresented minority high school students, public outreach at the annual Maryland Day, and research dissemination via cyberinfrastructure. The specific goal of this research program is (a) to explore a promising but largely unexplored strategy to enhance the mechanical properties of bioderived cellulose materials via ion infiltration, and (b) to decipher the fundamental correlation of the superb mechanical properties of bioderived cellulose materials with cellulose fiber length/alignment and water content. The research will be conducted via a coherent research framework integrating experiments and multiscale modeling. By revealing the fundamental science of the superb intrinsic mechanical properties of cellulose, the project holds promise to drive a paradigm shift in the usage of cellulose beyond its conventional way. The new knowledge generated from this research program will shed light fertile opportunities to exploit the full potential of the intrinsic superb mechanical properties of cellulose, the most abundant biopolymer on Earth. The fundamental scientific understanding emerging from this study can enrich the disciplines of mechanics of materials with multiple tantalizing research frontiers and be readily adapted and generalized to other material systems.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该研究项目将重点探索设计策略，以实现基于生物衍生纤维素的超强和超韧材料。纤维素是地球上最丰富的生物聚合物，长期以来一直用于生产纸制品。纤维素具有显著的机械性能，使其成为高性能功能和结构材料的重要组成部分。虽然植物是纤维素的常见来源，但从植物中分离和纯化纤维素需要额外的物理和化学处理，而这种处理可能会降低植物纤维素的机械性能。此外，树木通常需要数年或数十年才能成熟，这给种植纤维素带来了大量的时间成本。通过微生物发酵过程生产的生物衍生纤维素化学纯度为100%，性能比植物纤维素好得多，可以在几天内以低成本进行工业规模生产。本研究计划旨在使用实验和计算研究来研究控制生物衍生纤维素卓越机械性能的基础科学。这项研究计划的成功可能会导致设计高性能工程材料的低成本和长期寻求的解决方案。这项研究还将通过建立一个全面的教育和推广计划来补充，包括为研究生和本科生提供研究机会，为未被充分代表的少数民族高中生提供实习机会，在一年一度的马里兰日进行公众宣传，以及通过网络基础设施进行研究传播。本研究计划的具体目标是：(a)探索一种有前途但很大程度上尚未开发的策略，通过离子渗透来增强生物衍生纤维素材料的机械性能，以及(b)解读纤维素纤维长度/排列和含水量与生物衍生纤维素材料卓越机械性能的基本相关性。该研究将通过整合实验和多尺度建模的连贯研究框架进行。通过揭示纤维素卓越的内在机械特性的基础科学，该项目有望推动纤维素的使用超越传统方式的范式转变。从这个研究项目中产生的新知识将为开发纤维素（地球上最丰富的生物聚合物）固有的卓越机械性能的全部潜力提供丰富的机会。从本研究中产生的基础科学认识可以丰富材料力学学科，具有多个诱人的研究前沿，并且很容易适应和推广到其他材料系统。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Programming material properties by tuning intermolecular bonding

• DOI: 10.1063/5.0123058
• 发表时间: 2022-12
• 期刊: Journal of Applied Physics
• 影响因子: 3.2
• 作者: Upamanyu Ray;Zhenqian Pang;Teng Li

EML Webinar Overview: Advanced materials toward a sustainable future—Mechanics design

• DOI: 10.1016/j.eml.2020.101107
• 发表时间: 2021
• 期刊: Extreme Mechanics Letters
• 影响因子: 4.7
• 作者: Teng Li

Mechanics of cellulose nanopaper using a scalable coarse-grained modeling scheme

• DOI: 10.1007/s10570-021-03740-x
• 发表时间: 2021-03-02
• 期刊: CELLULOSE
• 影响因子: 5.7
• 作者: Ray, Upamanyu;Pang, Zhenqian;Li, Teng
• 通讯作者: Li, Teng

Flaw sensitivity of cellulose paper

• DOI: 10.1016/j.eml.2022.101865
• 发表时间: 2022-08
• 期刊: Extreme Mechanics Letters
• 影响因子: 4.7
• 作者: Qiongyu Chen;Bo Chen;Shuangshuang Jing;Yu Liu;Teng Li