Intermolecular hydrogen bond ruptured by graphite with different lamellar number

Area of Science:

• Materials Science
• Physical Chemistry
• Nanotechnology

Background:

• Intermolecular hydrogen bonds significantly influence material properties.
• Modulating these bonds without altering intrinsic properties is challenging.
• Glycerol's rheology is heavily dependent on its hydrogen bond network.

Purpose of the Study:

• To present a physical method for modulating intermolecular hydrogen bonds in glycerol.
• To investigate the effect of graphite and graphene on glycerol's hydrogen bonding and rheology.
• To explore the potential of nanomaterials in controlling hydroxyl liquid properties.

Main Methods:

• Addition of graphite and graphene as viscosity reducers in glycerol.
• Characterization using Raman spectroscopy and 1H-nuclear magnetic resonance.
• Analysis of structural effects via transmission electron microscopy and computer simulation.

Main Results:

• Graphite and graphene successfully adjusted intermolecular hydrogen bonds in glycerol.
• The rheology of glycerol was reduced to varying degrees.
• Spatial confinement by nanomaterials was identified as the primary mechanism for disrupting hydrogen bonds.

Conclusions:

• Nanomaterials like graphite and graphene can effectively modulate hydrogen bonds in hydroxyl liquids.
• This method offers a way to control material properties without changing their fundamental chemical nature.
• The findings contribute to understanding nanomaterial-hydroxyl liquid interactions for solid-liquid coupling lubrication.