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
• 负责人: Ayse Asatekin
• 金额: $ 10.2万
• 依托单位: Tufts University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-11-15 至 2019-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1508049&HistoricalAwards=false
• 关键词: SusChEM; Collaborative; Research; Identification; critical

In this project funded by the Environmental Chemical Sciences Program in the Chemistry Division at the National Science Foundation, Professors Meagan S. Mauter of Carnegie Mellon University and Ayse Asatekin of Tufts University characterize the fundamental mechanisms of foulant adhesion to naturally occurring surfaces. The ability to prevent soiling of a surface (prevent fouling) has many practical applications in both biomedical and marine applications. This research is leading to a new class of fouling resistant surfaces that enable energy savings. The ability to use anti-fouling membranes (i.e., filters that do not become clogged) to remove salt from sea water (desalinization) is also a potential benefit of this research. Two graduate and several undergraduate students involved in this research gain interdisciplinary knowledge and skills, and disseminate their work through publications and presentations. This work involves polymer synthesis, colloidal force and deposition experiments, and modeling to evaluate the relative importance of domain size, domain hydrophobicity/hydrophilicity contrast, and domain chemistry in determining foulant adsorption. A library of copolymer films with surface heterogeneity on the length scale of 1 to 10 nm are synthesized and characterized. The material properties are used to model the attachment efficiency of colloids to these heterogeneous surfaces using three models of increasing complexity. These models are validated using colloidal force microscopy and mass-based deposition measurements using a quartz crystal microbalance with dissipation monitoring. Finally, this project explores the role of nanopatterning on colloidal release as a function of shear velocity. Both Professors Mauter and Asatekin are active advocates of broadening the participation of women in science and engineering fields, and incorporate this research into their classes which includes topics in environmental policy, polymer science, and separations.

在这个由美国国家科学基金会化学部环境化学科学计划资助的项目中，卡内基梅隆大学的Mauter和塔夫茨大学的艾塞Asatekin描述了污垢附着在自然表面的基本机制。 防止表面污染（防止结垢）的能力在生物医学和海洋应用中具有许多实际应用。 这项研究正在导致一类新的防污表面，使能源节约。 使用防污膜的能力（即，不会堵塞的过滤器）来去除海水中的盐（脱盐）也是这项研究的一个潜在好处。 参与这项研究的两名研究生和几名本科生获得了跨学科的知识和技能，并通过出版物和演讲传播他们的工作。 这项工作涉及聚合物的合成，胶体力和沉积实验，和建模，以评估域的大小，域的疏水性/亲水性对比度，和域化学在确定污垢吸附的相对重要性。 合成了长度为1 ~ 10 nm的表面异质性共聚物薄膜库，并进行了表征。 的材料特性被用来模拟胶体的附着效率，这些异质表面使用三个模型的复杂性不断增加。 这些模型进行了验证，使用胶体力显微镜和质量为基础的沉积测量，使用石英晶体微天平与耗散监测。最后，这个项目探讨了纳米图案化对胶体释放的作用，作为剪切速度的函数。 Mauter和Asatekin教授都积极倡导扩大妇女在科学和工程领域的参与，并将这项研究纳入他们的课程，其中包括环境政策，聚合物科学和分离的主题。

项目成果

Simple Surface Modification of Poly(dimethylsiloxane) via Surface Segregating Smart Polymers for Biomicrofluidics

• DOI: 10.1038/s41598-019-43625-5
• 发表时间: 2019-05-14
• 期刊: SCIENTIFIC REPORTS
• 影响因子: 4.6
• 作者: Gokaltun, Aslihan;Kang, Young Bok (Abraham);Asatekin, Ayse
• 通讯作者: Asatekin, Ayse

Responsive filtration membranes by polymer self-assembly

• DOI: 10.1142/s2339547816500096
• 发表时间: 2016-11
• 作者: Papatya Kaner;Prity Bengani-Lutz;Ilin Sadeghi;A. Asatekin

Hydrophobic Antifouling Electrospun Mats from Zwitterionic Amphiphilic Copolymers

• DOI: 10.1021/acsami.8b03268
• 发表时间: 2018-05-30
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Ozcan, Sefika;Kaner, Papatya;Asatekin, Ayse
• 通讯作者: Asatekin, Ayse

Zwitterionic copolymer additive architecture affects membrane performance: fouling resistance and surface rearrangement in saline solutions

• DOI: 10.1039/c8ta11553b
• 发表时间: 2019-03-07
• 期刊: JOURNAL OF MATERIALS CHEMISTRY A
• 影响因子: 11.9
• 作者: Kaner, Papatya;Dudchenko, Alexander V.;Asatekin, Ayse
• 通讯作者: Asatekin, Ayse

Self-Assembling Zwitterionic Copolymers as Membrane Selective Layers with Excellent Fouling Resistance: Effect of Zwitterion Chemistry

• DOI: 10.1021/acsami.7b04884
• 发表时间: 2017-06-21
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Bengani-Lutz, Prity;Converse, Elisha;Asatekin, Ayse
• 通讯作者: Asatekin, Ayse