Fluoropolymer sorbent for efficient and selective capturing of per- and polyfluorinated compounds

Yang, Zhuojing; Zhu, Yutong; Tan, Xiao; Gunjal, Samruddhi Jayendra Jayendra; Dewapriya, Pradeep; Wang, Yiqing; Xin, Ruijing; Fu, Changkui; Liu, Kehan; Macintosh, Katie; Sprague, Lee G.; Leung, Lam; Hopkins, Timothy E.; Thomas, Kevin V.; Guo, Jianhua; Whittaker, Andrew K.; Zhang, Cheng

doi:10.1038/s41467-024-52690-y

Nat Commun

2024

DOI: 10.1038/s41467-024-52690-y

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Fluoropolymer sorbent for efficient and selective capturing of per- and polyfluorinated compounds

Zhuojing Yang,

Yutong Zhu,

Xiao Tan

et al.

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Cited by 3 publications

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Thermoresponsive Polymer Sorbents for Efficient Removal of Perfluorinated Compounds via Simple Heating

Tan,

Wang,

Yang

et al. 2024

Macromolecules

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The efficient removal of per-and polyfluoroalkyl substances (PFAS) and recycling sorbents from contaminated water face grand challenges in the field of PFAS remediation. In this work, a series of thermoresponsive perfluoropolyether (PFPE)-containing polymer sorbents were developed for efficient removal of PFAS from contaminated water using a simple heating process. The polymer sorbents are thermoresponsive due to inclusion of the monomer Nisopropylacrylamide (NIPAM). Four block copolymers with the same degree of polymerization (DP) of [2-(acryloyloxy)ethyl]trimethylammonium iodide (AETAI) but increasing DPs of NIPAM were prepared via reversible addition−fragmentation chain-transfer (RAFT) polymerization. The results demonstrate that the balance between hydrophobic/hydrophilic segments from the polymers significantly influences their lower critical transition temperatures (LCSTs), and such balance could be altered by the presence of amphiphilic PFAS. Upon complete sorption, >99% removal for majority of the tested PFAS was achieved by heating the solution mixture to above its lower critical solution temperature and filtration. The study introduces the design and preparation of efficient "smart" PFAS sorbents based on their thermoresponsive properties, offering a new approach to effectively separate PFAS sorbents from treated solutions.

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Thermoresponsive Polymer Sorbents for Efficient Removal of Perfluorinated Compounds via Simple Heating

Tan,

Wang,

Yang

et al. 2024

Macromolecules

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Discrete Side Chains for Direct Tuning Properties of Grafted Polymers

Wang,

Tan,

Zhang

et al. 2024

Macromolecules

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Synthetic grafted polymers featuring a backbone main chain and functional oligomeric side chains have been widely used in a variety of high-value applications. However, dispersity in side-chain length limits the full understanding of their structure− property relationships. Herein, we report an efficient strategy to access grafted polymers with precisely controlled side-chain structure. Automated chromatography is utilized to separate a range of commercially available, disperse (meth)acrylate ethylene glycol and propylene glycol macromonomers into discrete, welldefined species. The separated macromonomers were subsequently employed to prepare grafted polymers having a discrete side-chain length and structure through controlled radical polymerization. By studying these well-defined materials, our results highlighted the influence of side-chain length and dispersity on various physical properties, including glass transition temperature and thermoresponsive behavior. Additionally, we observed that the length of the side chain has a more significant influence than the degree of polymerization of the main chain in determining these properties. This study confirms the versatility of automated chromatography for fractionating commercially available macromonomers and oligomeric cross-linkers into discrete species. From these building blocks, libraries of well-defined graft architectures and network grafted polymers can be prepared, which allows for a comprehensive understanding of structure−property relationships.

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Functional Fluoropolymer Surfactants for Droplet Generation in Microfluidics

Cheng,

Wang,

Xia

et al. 2024

ACS Appl. Polym. Mater.

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Fluorinated surfactants play an important role in dropletbased microfluidics, enabling the rapid generation of uniform droplets, which is crucial for diverse applications. However, commercial fluorosurfactants are expensive and feature complex chemical structures that limit their ability to confer desired functionalities onto droplets. In this study, we employ a versatile and facile strategy using reversible addition−fragmentation chain transfer (RAFT) polymerization to produce well-defined droplets with facial tunability in functionalities. Various types of fluorinated surfactants have been prepared and investigated, encompassing hydrophilic poly(2-hydroxyethyl acrylate), thermal-responsive poly(N-isopropylacrylamide), pH-responsive poly(2-(dimethylamino)ethyl acrylate), and zwitterionic polymers. Moreover, our study demonstrates the utility of these surfactants in producing ionexchange beads through in situ photopolymerization with precisely controlled sizes. This work unveils a promising strategy for designing and synthesizing functional fluorinated surfactants, thereby facilitating the development of ion-exchange resins for potential high-value applications.

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Fluoropolymer sorbent for efficient and selective capturing of per- and polyfluorinated compounds

Cited by 3 publications

References 46 publications

Thermoresponsive Polymer Sorbents for Efficient Removal of Perfluorinated Compounds via Simple Heating

Thermoresponsive Polymer Sorbents for Efficient Removal of Perfluorinated Compounds via Simple Heating

Discrete Side Chains for Direct Tuning Properties of Grafted Polymers

Functional Fluoropolymer Surfactants for Droplet Generation in Microfluidics

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