Abstract
Wrapping a 3D object with a 2D sheet is not uncommon, but the wrapping behavior becomes complex and interesting when the sheet is bestowed with strong interfacial activities. Amphiphilic lignin macromolecules, isolated from biomass, form a scalable thin surfactant sheet at an oil/water interface through the interfacial jamming process. The process marks three distinct stages of interfacial behavior: a) diffusive assembly, b) viscous assembly with retarded mobility, and c) flexible yet irreversibly jammed rigid sheets. The surfactant sheet wraps, traps, and promptly stabilizes both oil and water droplets in nonequilibrium morphologies upon environmental stimulus. Beyond preserving exotic morphologies, the highly interfacially active surfactant sheet also participates in morphology evolution by creating a vanishing interfacial tension and driving interfacial instability around the wrapped content, leading to novel morphologies as well as many potential applications.
| Original language | English |
|---|---|
| Article number | 1901751 |
| Journal | Advanced Materials Interfaces |
| Volume | 7 |
| Issue number | 7 |
| DOIs | |
| State | Published - Apr 1 2020 |
Funding
This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE-AC05-00OR22725, was sponsored by the Office of Energy Efficiency and Renewable Energy Bioenergy Technologies Office Program. Q.G. was supported as part of the Fluid Interface Reactions, Structures and Transport (FIRST) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. AFM and interfacial tension measurements were conducted at the Center for Nanophase Materials Sciences, which is DOE Office of Science User Facility. This manuscript has been authored in part by UT-Battelle, LLC, under Contract No. DE-AC0500OR22725 with the U.S. Department of Energy (DOE). This research at Oak Ridge National Laboratory, managed by UT Battelle, LLC, for the U.S. Department of Energy (DOE) under Contract No. DE‐AC05‐00OR22725, was sponsored by the Office of Energy Efficiency and Renewable Energy Bioenergy Technologies Office Program. Q.G. was supported as part of the Fluid Interface Reactions, Structures and Transport (FIRST) Center, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. AFM and interfacial tension measurements were conducted at the Center for Nanophase Materials Sciences, which is DOE Office of Science User Facility. This manuscript has been authored in part by UT‐Battelle, LLC, under Contract No. DE‐AC0500OR22725 with the U.S. Department of Energy (DOE).
| Funders | Funder number |
|---|---|
| DOE Office of Science | |
| Office of Basic Energy Sciences | |
| Office of Energy Efficiency and Renewable Energy Bioenergy Technologies Office Program | |
| U.S. Department of Energy | DE‐AC05‐00OR22725 |
| Battelle | |
| Office of Science | |
| Office of Energy Efficiency and Renewable Energy | |
| Basic Energy Sciences | |
| Oak Ridge National Laboratory | |
| UT-Battelle |
Keywords
- interfacial instability
- interfacial jamming
- lignin surfactant
- nonequilibrium morphologies
- wrapping