Surfactant Mediated Microphase Separation in Miscible Block Copolymer of Poly(4-vinyl pyridine-b-hydroxybutylacrylate)

Xu, Xiangyun; Gao, Yanbin; Wang, Yingying; Zhou, Youshuang; Xiong, Bijin; Zhu, Jintao

doi:10.1007/s10118-022-2876-0

Cited by 1 publication

(1 citation statement)

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“…Small organic molecules can easily assemble into one or more of the polymer phases if the interaction is favorable [ 15 ]. For example, Xu et al showed the possibility of inducing phase separation in a miscible BCP by adding different surfactant molecules through supramolecular interactions [ 16 ]. Just like with organic molecules, inorganic particle precursors can also be assembled within a BCP microdomain.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Polymer-Modified FePt Magnetic Nanoparticles and Block Copolymers

et al. 2023

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The fabrication of nanocomposites containing magnetic nanoparticles is gaining interest as a model for application in small electronic devices. The self-assembly of block copolymers (BCPs) makes these materials ideal for use as a soft matrix to support the structural ordering of the nanoparticles. In this work, a high-molecular-weight polystyrene-b-poly(methyl methacrylate) block copolymer (PS-b-PMMA) was synthesized through anionic polymerization. The influence of the addition of different ratios of PMMA-coated FePt nanoparticles (NPs) on the self-assembled morphology was investigated using transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS). The self-assembly of the NPs inside the PMMA phase at low particle concentrations was analyzed statistically, and the negative effect of higher particle ratios on the lamellar BCP morphology became visible. The placement of the NPs inside the PMMA phase was also compared to theoretical descriptions. The magnetic addressability of the FePt nanoparticles inside the nanocomposite films was finally analyzed using bimodal magnetic force microscopy and proved the magnetic nature of the nanoparticles inside the microphase-separated BCP films.

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Section: Introductionmentioning

confidence: 99%