Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers

Qiangbing Wei; Mingkang Sun; Zongyu Wang; Jiajun Yan; Rui Yuan; Tong Liu; Carmel Majidi; Krzysztof Matyjaszewski

doi:10.1021/acsnano.0c02720

Surface Engineering of Liquid Metal Nanodroplets by Attachable Diblock Copolymers

ACS Nano ◽

10.1021/acsnano.0c02720 ◽

2020 ◽

Vol 14 (8) ◽

pp. 9884-9893 ◽

Cited By ~ 2

Author(s):

Qiangbing Wei ◽

Mingkang Sun ◽

Zongyu Wang ◽

Jiajun Yan ◽

Rui Yuan ◽

...

Keyword(s):

Liquid Metal ◽

Diblock Copolymers ◽

Surface Engineering

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Synthesis and application of core–shell liquid metal particles: a perspective of surface engineering

Materials Horizons ◽

10.1039/d0mh01117g ◽

2021 ◽

Cited By ~ 1

Author(s):

Yong Liu ◽

Wei Zhang ◽

Hao Wang

Keyword(s):

Liquid Metal ◽

Surface Engineering ◽

Metal Particles ◽

Core Shell ◽

Interface Chemistry

This review answers how to manipulate the surface/interface chemistry of liquid metal micro/nanomaterials for improved applications.

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Morphological behavior of compatibilized ternary blends prepared by mechanical mixing

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100151830 ◽

1993 ◽

Vol 51 ◽

pp. 1200-1201

Author(s):

S.D. Smith ◽

R.J. Spontak ◽

D.H. Melik ◽

S.M. Buehler ◽

K.M. Kerr ◽

...

Keyword(s):

Interfacial Adhesion ◽

Diblock Copolymers ◽

Ternary Blends ◽

Mechanical Mixing ◽

Design Considerations ◽

Covalently Bonded ◽

Homopolymer Blends ◽

Emulsifying Agent ◽

Surface Active ◽

Low Entropy

When blended together, homopolymers A and B will normally macrophase-separate into relatively large (≫1 μm) A-rich and B-rich phases, between which exists poor interfacial adhesion, due to a low entropy of mixing. The size scale of phase separation in such a blend can be reduced, and the extent of interfacial A-B contact and entanglement enhanced, via addition of an emulsifying agent such as an AB diblock copolymer. Diblock copolymers consist of a long sequence of A monomers covalently bonded to a long sequence of B monomers. These materials are surface-active and decrease interfacial tension between immiscible phases much in the same way as do small-molecule surfactants. Previous studies have clearly demonstrated the utility of block copolymers in compatibilizing homopolymer blends and enhancing blend properties such as fracture toughness. It is now recognized that optimization of emulsified ternary blends relies upon design considerations such as sufficient block penetration into a macrophase (to avoid block slip) and prevention of a copolymer multilayer at the A-B interface (to avoid intralayer failure).

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Triply-periodic nanostructures in surfactant, block copolymer, and biomembrane systems, and simulation of TEMs

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100150253 ◽

1993 ◽

Vol 51 ◽

pp. 884-885

Author(s):

David M. Anderson ◽

Tomas Landh

Keyword(s):

Liquid Crystalline ◽

Diblock Copolymers ◽

Cubic Phase ◽

List Type ◽

Interpenetrating Networks ◽

Triply Periodic ◽

Wide Range ◽

Bicontinuous Cubic ◽

Phase Liquid ◽

Dividing Surface

First discovered in surfactant-water liquid crystalline systems, so-called ‘bicontinuous cubic phases’ have the property that hydropnilic and lipophilic microdomains form interpenetrating networks conforming to cubic lattices on the scale of nanometers. Later these same structures were found in star diblock copolymers, where the simultaneous continuity of elastomeric and glassy domains gives rise to unique physical properties. Today it is well-established that the symmetry and topology of such a morphology are accurately described by one of several triply-periodic minimal surfaces, and that the interface between hydrophilic and hydrophobic, or immiscible polymer, domains is described by a triply-periodic surface of constant, nonzero mean curvature. One example of such a dividing surface is shown in figure 5.The study of these structures has become of increasing importance in the past five years for two reasons:1)Bicontinuous cubic phase liquid crystals are now being polymerized to create microporous materials with monodispersed pores and readily functionalizable porewalls; figure 3 shows a TEM from a polymerized surfactant / methylmethacrylate / water cubic phase; and2)Compelling evidence has been found that these same morphologies describe biomembrane systems in a wide range of cells.

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