CAREER: CAS: Highly Stable Depolymerizable Polymers with Tunable Thermal and Mechanical Properties as Sustainable Materials

职业:CAS:具有可调热性能和机械性能的高度稳定的可解聚聚合物作为可持续材料

基本信息

  • 批准号:
    2042494
  • 负责人:
  • 金额:
    $ 61.7万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2021
  • 资助国家:
    美国
  • 起止时间:
    2021-07-01 至 2026-06-30
  • 项目状态:
    未结题

项目摘要

NON-TECHNICAL SUMMARYSynthetic polymers, including rubber and plastics, are used in nearly every aspect of daily life. The dominance of synthetic polymers is largely driven by their excellent stability and versatile mechanical properties. However, due to their high durability, waste materials composed of these polymers have accumulated in the land and oceans, causing serious concerns for the ecosystem. In addition, since over 90% of these polymers are derived from finite fossil feedstocks, the production of these materials is unsustainable if they cannot be recycled and reused. This project seeks to address these challenges by developing recyclable polymers that can be broken down into the constituents (monomers) from which they are made. The recycled monomers can be reused to produce the polymers, allowing for a circular use of materials, which not only helps to preserve the finite natural resources used in plastics production, but also addresses the issue of unwanted end-of-life accumulation of plastic objects. Besides demonstrating the recycling of the polymers, the PI plans to tune the thermal and mechanical properties of the polymers to meet the needs of a variety of applications. This project will also contribute to education and broadened participation in materials science and sustainability through developing undergraduate and graduate courses, recruiting underrepresented minority researchers, and reaching out to local high schools and museums. A multimedia exhibition called “Polymers and Life”, which will include cards, videos and hands-on projects, will be developed in collaboration with the Akron Children’s Museum.TECHNICAL SUMMARYA promising solution to address the challenges in plastics sustainability is to replace current polymers with recyclable ones in order to achieve a circular use of materials. Despite the progress made thus far, few recyclable polymers exhibit the excellent thermal stability and high-performance mechanical properties of traditional polymers. This project aims to address those challenges by developing polymers that can undergo catalytic depolymerization to yield their constituent monomers. When the catalyst for depolymerization is absent or removed, the polymers will be highly stable and their thermal and mechanical properties can be tuned to meet the needs of various applications. The objectives of the research include design and synthesis of the polymers, demonstration of depolymerizability and stability, and establishment of structure–thermal property relationships and structure–mechanical property relationships. Research results will be incorporated into undergraduate and graduate courses. These courses are expected to bridge the knowledge gap between fundamental physical organic chemistry and materials science, integrate experimental and computational research, and enhance student awareness of sustainability. The proposed research will also provide opportunities to attract and nurture a diverse group of future scientists who can participate in research activities on sustainable polymers. In addition, demonstration materials based on the research findings will be developed for use in outreach efforts to local high schools and museums in order to inspire an interest in science in the younger generation..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.
合成聚合物,包括橡胶和塑料,几乎用于日常生活的各个方面。合成聚合物的主导地位在很大程度上取决于其优异的稳定性和多功能的机械性能。然而,由于它们的高耐久性,由这些聚合物组成的废物材料在陆地和海洋中积累,对生态系统造成严重关切。此外,由于这些聚合物中超过90%来自有限的化石原料,如果不能回收和再利用,这些材料的生产是不可持续的。该项目旨在通过开发可回收的聚合物来应对这些挑战,这些聚合物可以分解为制造它们的成分(单体)。回收的单体可以再利用来生产聚合物,允许材料的循环使用,这不仅有助于保护塑料生产中使用的有限自然资源,而且还解决了塑料物体不必要的报废积累问题。除了展示聚合物的回收利用外,PI还计划调整聚合物的热性能和机械性能,以满足各种应用的需求。该项目还将通过开发本科生和研究生课程,招募代表性不足的少数民族研究人员,并与当地高中和博物馆联系,促进教育,扩大材料科学和可持续性的参与。与阿克伦儿童博物馆合作,将举办一个名为“聚合物与生命”的多媒体展览,包括卡片、视频和实践项目。技术总结解决塑料可持续性挑战的一个有前途的解决方案是用可回收的聚合物取代现有的聚合物,以实现材料的循环使用。尽管迄今为止取得了进展,但很少有可回收聚合物表现出传统聚合物的优异热稳定性和高性能机械性能。该项目旨在通过开发可以进行催化解聚以产生其组成单体的聚合物来应对这些挑战。当不存在或去除解聚催化剂时,聚合物将是高度稳定的,并且它们的热性能和机械性能可以调节以满足各种应用的需要。研究的目标包括聚合物的设计和合成,解聚性和稳定性的证明,以及结构-热性能关系和结构-力学性能关系的建立。研究成果将纳入本科和研究生课程。这些课程有望弥合基础物理有机化学和材料科学之间的知识差距,整合实验和计算研究,并提高学生的可持续发展意识。拟议的研究还将提供机会,吸引和培养一批未来的科学家,他们可以参与可持续聚合物的研究活动。此外,还将根据研究结果编写示范材料,用于向当地高中和博物馆开展宣传活动,以激发年轻一代对科学的兴趣。该奖项反映了NSF的法定使命,并被认为是值得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的支持。

项目成果

期刊论文数量(9)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Regulating the Thermodynamics and Thermal Properties of Depolymerizable Polycyclooctenes through Substituent Effects
  • DOI:
    10.1002/marc.202200304
  • 发表时间:
    2022-06-21
  • 期刊:
  • 影响因子:
    4.6
  • 作者:
    Sathe, Devavrat;Chen, Hanlin;Wang, Junpeng
  • 通讯作者:
    Wang, Junpeng
Olefin metathesis-based chemically recyclable polymers enabled by fused-ring monomers
  • DOI:
    10.1038/s41557-021-00748-5
  • 发表时间:
    2021-07-22
  • 期刊:
  • 影响因子:
    21.8
  • 作者:
    Sathe, Devavrat;Zhou, Junfeng;Wang, Junpeng
  • 通讯作者:
    Wang, Junpeng
Overcoming the Low Driving Force in Forming Depolymerizable Polymers through Monomer Isomerization
Turnaround in use of enol ether opens the door to degradable plastics
烯醇醚使用的转变为可降解塑料打开了大门
  • DOI:
    10.1016/j.trechm.2022.02.005
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    15.7
  • 作者:
    Zhou, Junfeng;Hsu, Tze-Gang;Wang, Junpeng
  • 通讯作者:
    Wang, Junpeng
Depolymerizable semi-fluorinated polymers for sustainable functional materials
  • DOI:
    10.1039/d2py00240j
  • 发表时间:
    2022-04-06
  • 期刊:
  • 影响因子:
    4.6
  • 作者:
    Sathe, Devavrat;Zhou, Junfeng;Wang, Junpeng
  • 通讯作者:
    Wang, Junpeng
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Junpeng Wang其他文献

DDAM: Data Distribution-Aware Mapping of CNNs on Processing-In-Memory Systems
DDAM:数据分布 - 内存处理系统上 CNN 的感知映射
Self-doped TiO2−x nanowires with enhanced photocatalytic activity: Facile synthesis and effects of the Ti3+
具有增强光催化活性的自掺杂 TiO2-x 纳米线:Ti3 的简易合成和效果
  • DOI:
    10.1016/j.apsusc.2015.08.029
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    6.7
  • 作者:
    Junpeng Wang;Ping Yang;Baibiao Huang
  • 通讯作者:
    Baibiao Huang
Spontaneous Formate Oxidation on the 2D Surface Metal Fluoride Interface Reconstructed from the AgPdF Surface
AgPdF 表面重建的二维表面金属氟化物界面上的自发甲酸盐氧化
  • DOI:
    10.1021/acs.jpcc.2c01665
  • 发表时间:
    2022-06
  • 期刊:
  • 影响因子:
    3.7
  • 作者:
    Tao Jin;Longfei Guo;Quan Tang;Junpeng Wang;Bowei Pan;Chongyang Wang;Zhen Li;Fuyi Chen
  • 通讯作者:
    Fuyi Chen
Error-bounded Approximate Time Series Joins using Compact Dictionary Representations of Time Series
使用时间序列的紧凑字典表示的有误差范围的近似时间序列连接
  • DOI:
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Chin;Yan;Junpeng Wang;Huiyuan Chen;Zhongfang Zhuang;Wei Zhang;Eamonn J. Keogh
  • 通讯作者:
    Eamonn J. Keogh
Dietary naringenin supplementation attenuates experimental autoimmune encephalomyelitis by modulating autoimmune inflammatory responses in mice
  • DOI:
    doi.org/10.1016/j.jnutbio.2017.12.004
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
  • 作者:
    Junpeng Wang;Ying Qi;Xinli Niu;Hua Tang;Simin Nikbin Meydani;Dayong Wu
  • 通讯作者:
    Dayong Wu

Junpeng Wang的其他文献

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{{ truncateString('Junpeng Wang', 18)}}的其他基金

CAS-Climate: Mechanically Active Degradable Polymers
CAS-气候:机械活性可降解聚合物
  • 批准号:
    2204079
  • 财政年份:
    2022
  • 资助金额:
    $ 61.7万
  • 项目类别:
    Standard Grant

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