Brush-like block copolymer synthesized via RAFT polymerization for graphene oxide aqueous suspensions

Qiao, Min; Wu, Shishan; Wang, Yanwei; Ran, Qianping

doi:10.1039/c6ra27480c

Cited by 6 publications

(1 citation statement)

References 22 publications

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“…However, as opposed to PDbS-rGO, PDrS-rGO was already aggregated at RT since the styrene part is difficult to anchor on the rGO surface because of steric hindrance by the long DMAEMA part (Figure S8, Supporting Information). [53] Therefore, architecture control is important for the dispersion of rGO. The obtained TEM, scanning electron microscopy (SEM), and Raman spectroscopy data demonstrated that graphene morphology was effectively controlled by a certain temperature due to the LCST properties of PDbS.…”

Section: Resultsmentioning

confidence: 99%

Controlling Graphene Wrinkles through the Phase Transition of a Polymer with a Low Critical Solution Temperature

Kwon

Yang

Kim

et al. 2021

Macromol. Rapid Commun.

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A novel method for controlling reduced graphene oxide (rGO) wrinkles through a phase transition in a solution using a low critical solution temperature (LCST) polymer dispersant has been developed. The polymer dispersant is designed by control of architecture and composition using reversible addition-fragmentation chain transfer polymerization. Synthesized poly(2-(dimethylaminoethyl) methacrylate-block-styrene) (PDbS) can be successfully functionalized on the rGO surface via noncovalent functionalization. PDbS-functionalized rGO (PDbS-rGO) exhibits good dispersibility in an aqueous phase at room temperature and forms wrinkles on the PDbS-rGO surface because of phase transition at the LCST of the polymer dispersant. The formation of PDbS-rGO wrinkles is controlled by varying the aggregation number of the polymer dispersant on the PDbS-rGO surface that strongly depends on temperature. This is confirmed by transmission electron microscopy, scanning electron microscopy, and Raman spectroscopy (I D' /I G ratios are 0.560, 0.579, and 0.684, which correspond to 45, 70, and 95 °C, respectively). In addition, the mechanism of wrinkle control is proved by gold nanoparticles that are grown in polymer dispersant on the PDbS-rGO surface.

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Section: Resultsmentioning

confidence: 99%

Controlling Graphene Wrinkles through the Phase Transition of a Polymer with a Low Critical Solution Temperature

Kwon

Yang

Kim

et al. 2021

Macromol. Rapid Commun.

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Tailoring Charged Block Copolymer Architecture for Performance

White¹,

Liu²,

Drummey³

et al. 2022

Macromolecular Engineering

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Charged block copolymers (BCPs) find use in numerous applications spanning from gene delivery to electromechanical transducers. Recent advances in polymer synthesis have provided researchers with the necessary tools to study the properties of a wide variety of BCPs bearing cationic and anionic substituents. Controlling the architecture of these charged BCPs plays a key role in tailoring their performances in the desired application. Likewise, the polymer morphology significantly affects ion transport and thermomechanical properties of the charged BCP. This article aims to compare the structure–property relationships in charged BCPs across a variety of different polymer architectures including linear, branched, segmented, and multiply charged BCPs with a focus on tailoring properties for specific applications. Linear BCPs comprise of diblock, triblock, and multiblock copolymers. Diblocks frequently serve as micelles for drug delivery while triblocks, multiblocks, and segmented BCPs act as ion exchange membranes for transducers and fuel cells. The section on branched BCPs discusses polymer brushes, stars, micelles, and cross‐linked networks. The final section describes synthetic routes toward synthesizing multiply charged monomers and polymers while also emphasizing the challenges and benefits associated with these materials.

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Imidization of styrene–maleic anhydride copolymer for dispersing nano-SiO2 in water

Xue

Zhou

et al. 2023

J Coat Technol Res

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Brush-like block copolymer synthesized via RAFT polymerization for graphene oxide aqueous suspensions

Abstract: We report for the first time the applications of brush-like block copolymer in the dispersant of graphene oxide aqueous suspensions.

Cited by 6 publications

References 22 publications

Controlling Graphene Wrinkles through the Phase Transition of a Polymer with a Low Critical Solution Temperature

Controlling Graphene Wrinkles through the Phase Transition of a Polymer with a Low Critical Solution Temperature

Tailoring Charged Block Copolymer Architecture for Performance

Imidization of styrene–maleic anhydride copolymer for dispersing nano-SiO2 in water

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