Molecular Weight Dependence of Surface Tension of Poly(ethylene oxide) Solution
Jianwei Zhang,
Lu Qian,
Jiajia Zhou
et al.
Abstract:Surface tension plays a critical role in a wide range
of fields
such as adhesion, wetting, and capillarity. Herein, we combine experiments
and molecular dynamics (MD) simulations to study the surface tension
(γ) of poly(ethylene oxide) (PEO) solution as a function of
its molecular weight (M). In experiments, we reveal
that γ is scaled to M with |γ –
γ∞| ∝ M
α up to a critical molecular weight (M*). Simulation
with a coarse-grained polymer solution model shows that α decreases
as the solvent quality becomes wor… Show more
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