Collaborative research: Rates and Mechanisms of Biofouling and Mineral Scaling on Zwitterionic Amphiphilic Copolymer Surfaces

合作研究:两性离子两亲性共聚物表面生物污垢和矿物结垢的速率和机制

基本信息

  • 批准号:
    1904465
  • 负责人:
  • 金额:
    $ 15.6万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2019
  • 资助国家:
    美国
  • 起止时间:
    2019-08-01 至 2022-07-31
  • 项目状态:
    已结题

项目摘要

This award from the Environmental Chemical Sciences Program in the Division of Chemistry supports Professors Ayse Asatekin from Tufts University, and Yandi Hu and Debora Rodrigues from University of Houston to investigate mechanisms of mineral scaling and biofouling on a new family of materials previously demonstrated to exhibit promising resistance to organic fouling. Fouling, or the deposition of unwanted materials on surfaces, is a severe problem in many applications where surfaces are in contact with seawater, affecting ship hulls, heat exchangers, and membranes. Therefore, there is an urgent need for developing materials that resist fouling when exposed to various environmental streams. Fouling can arise from the deposition of various components in water, including organic compounds, microorganisms, or inorganic minerals. This project focuses on a new family of materials having exceptional resistance to organic fouling. The main objective of this research is to determine if these materials also resist biofouling (i.e. adhesion of microorganisms) and mineral scaling (i.e. deposition of inorganic salts or minerals), understand how their chemical structure affects these different types of fouling processes, and eventually develop design rules for surfaces that resist multiple types of fouling. The research is conducted by a diverse team of graduate and undergraduate students in labs with a track record of recruiting and training members of underrepresented groups, and is incorporated into several university courses and K-12 outreach activities targeted at girls and underrepresented minorities. This project investigates processes of biofouling and mineral scaling on amphiphilic copolymers of zwitterionic and hydrophobic monomers, termed zwitterionic amphiphilic copolymers (ZACs), which can exhibit unprecedented resistance to organic fouling. The team is synthesizing ZACs with a range of monomer chemistries, hydrophobicities, and surface charges. Upon coating onto substrates, these materials are screened for organic fouling resistance. Promising ZACs are investigated in terms of the mechanisms and rates of gypsum scaling and biofouling. Scaling studies employ state-of-the-art techniques for in situ quantification of the heterogeneous nucleation of gypsum minerals onto surfaces as well as their aggregation and deposition. This project also develops a quantitative PCR array approach to identify the microbial genetic pathways of biofouling on ZAC coated surfaces. At the same time, advanced microscopic techniques are used to identify the unique properties of ZACs and connect them with initial microbial cell attachment rates and biofilm growth rates. Synergistic effects of biofouling and scaling are also considered. These results are compiled and correlated with ZAC chemistry (zwitterionic and hydrophobic groups), surface energy, surface charge, and other criteria. This work is expected to lead to a fundamental understanding of mechanisms and ZAC surface chemistry properties associated to organic fouling, biofouling, and scaling. The team's multidisciplinary and complementary expertise enables rational design of novel advanced materials to allow new scientific and transformative findings across disciplines of environmental chemistry, chemical and environmental engineering, environmental microbiology, and materials science.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.
该奖项由化学学部环境化学科学项目颁发,支持塔夫茨大学的Ayse Asatekin教授和休斯顿大学的Yandi Hu和Debora Rodrigues教授研究矿物结垢和生物结垢的机制,这些新材料先前被证明具有抗有机结垢的潜力。在许多与海水接触的表面中,污垢或不需要的物质沉积在表面上是一个严重的问题,会影响船体、热交换器和膜。因此,迫切需要开发在暴露于各种环境流时抵抗污染的材料。污垢可由各种成分在水中的沉积引起,包括有机化合物、微生物或无机矿物质。这个项目的重点是一种新型材料,具有优异的抗有机污染能力。本研究的主要目的是确定这些材料是否也能抵抗生物污垢(即微生物的粘附)和矿物结垢(即无机盐或矿物质的沉积),了解它们的化学结构如何影响这些不同类型的污垢过程,并最终制定抵抗多种类型污垢的表面设计规则。这项研究是由一个由研究生和本科生组成的多元化团队在实验室进行的,他们在招募和培训代表性不足的群体成员方面有着良好的记录,并被纳入了针对女孩和代表性不足的少数群体的几门大学课程和K-12推广活动中。该项目研究了两性离子和疏水单体的两亲共聚物(两性离子两亲共聚物(ZACs))的生物结垢和矿物结垢过程,该共聚物具有前所未有的抗有机结垢能力。该团队正在合成具有一系列单体化学性质、疏水性和表面电荷的ZACs。在涂覆到基板上后,对这些材料进行有机抗污性筛选。从石膏结垢和生物结垢的机理和速率等方面对有前途的ZACs进行了研究。结垢研究采用最先进的技术,对石膏矿物在表面上的非均相成核以及它们的聚集和沉积进行原位定量。本项目还开发了一种定量PCR阵列方法,以确定ZAC涂层表面生物污垢的微生物遗传途径。同时,利用先进的显微技术鉴定ZACs的独特性质,并将其与初始微生物细胞附着率和生物膜生长速率联系起来。还考虑了生物污垢和结垢的协同效应。这些结果与ZAC化学(两性离子和疏水性基团)、表面能、表面电荷和其他标准相关联。这项工作有望导致对有机污垢、生物污垢和结垢相关的机制和ZAC表面化学性质的基本理解。该团队的多学科和互补性专业知识使新型先进材料的合理设计能够在环境化学、化学和环境工程、环境微生物学和材料科学等学科中实现新的科学和变革性发现。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

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Calcium Sulfate Formation on Different Zwitterionic Amphiphilic Copolymer Substrates for Salt Water Treatment
  • DOI:
    10.1021/acsapm.2c01014
  • 发表时间:
    2022-09
  • 期刊:
  • 影响因子:
    5
  • 作者:
    M. Wang;H. Nguyen;Samuel J. Lounder;A. Asatekin;D. Rodrigues
  • 通讯作者:
    M. Wang;H. Nguyen;Samuel J. Lounder;A. Asatekin;D. Rodrigues
Ultra‐Fast Click Modification of Self‐Assembled Zwitterionic Copolymer Membranes for Enhanced Ion Selectivity
自组装两性离子共聚物膜的超快速点击修饰,以增强离子选择性
  • DOI:
    10.1002/admi.202102496
  • 发表时间:
    2022
  • 期刊:
  • 影响因子:
    5.4
  • 作者:
    Mondal, Abhishek N.;Lounder, Samuel J.;Mazzaferro, Luca;Asatekin, Ayse
  • 通讯作者:
    Asatekin, Ayse
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Ayse Asatekin其他文献

Influence of zwitterionic amphiphilic copolymers on heterogeneous gypsum formation: A promising approach for scaling resistance
  • DOI:
    10.1016/j.watres.2024.122439
  • 发表时间:
    2024-11-15
  • 期刊:
  • 影响因子:
  • 作者:
    Meng Wang;Xiaobing Zuo;Raynara M.S. Jacovone;Ryan O'Hara;Abhishek Narayan Mondal;Ayse Asatekin;Debora F. Rodrigues
  • 通讯作者:
    Debora F. Rodrigues

Ayse Asatekin的其他文献

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{{ truncateString('Ayse Asatekin', 18)}}的其他基金

NSF-DFG CONFINE: Lithium ion transport in self-assembled zwitterionic nanochannels containing ionic liquids
NSF-DFG CONFINE:含有离子液体的自组装两性离子纳米通道中的锂离子传输
  • 批准号:
    2234243
  • 财政年份:
    2022
  • 资助金额:
    $ 15.6万
  • 项目类别:
    Standard Grant
Multi-functional membrane selective layers by interfacial free radical polymerization
通过界面自由基聚合制备多功能膜选择性层
  • 批准号:
    1703549
  • 财政年份:
    2017
  • 资助金额:
    $ 15.6万
  • 项目类别:
    Standard Grant
CAREER: Self-Assembly of Zwitterionic Amphiphilic Copolymers for Membranes with Sharp, Tunable Pore Size
职业:用于具有尖锐、可调孔径的膜的两性离子两亲共聚物的自组装
  • 批准号:
    1553661
  • 财政年份:
    2016
  • 资助金额:
    $ 15.6万
  • 项目类别:
    Standard Grant
SusChEM: Collaborative Research: Identification of the critical length scales and chemistries responsible for the anti-fouling properties of heterogeneous surfaces
SusChEM:合作研究:确定负责异质表面防污性能的临界长度尺度和化学成分
  • 批准号:
    1508049
  • 财政年份:
    2015
  • 资助金额:
    $ 15.6万
  • 项目类别:
    Standard Grant
Fouling Resistant Ultrafiltration Membranes: Effect of Additive Polymer Architecture
防垢超滤膜:添加剂聚合物结构的影响
  • 批准号:
    1437772
  • 财政年份:
    2014
  • 资助金额:
    $ 15.6万
  • 项目类别:
    Standard Grant

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