intermolecular force

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intermolecular force

[‚in·tər·mə′lek·yə·lər ′fōrs]
(physical chemistry)
The force between two molecules; it is that negative gradient of the potential energy between the interacting molecules, if energy is a function of the distance between the centers of the molecules.
References in periodicals archive ?
The frequency difference ([DELTA]v) between the hydrogen bonded hydroxyl band and the free hydroxyl band was a measure of average strength of the intermolecular interaction [30].
Generally speaking, the mechanical properties of polymeric fibers mainly depend on the intrinsic viscosity, intermolecular interaction, rigidity of polymer backbone, molecular packing and structure defects [29-31], The intrinsic viscosities of the PAA solutions decrease with the increase of ODA or BIA contents compared with BPOB-3, implying that the ODA and BIA moieties improve the flexibility of the polymer chains, as reported that the flexibility of polymer chains can reduce the viscosity [32], The decrease of the intrinsic viscosities lead to the decrease of tensile strength, manifesting that the intrinsic viscosities of co-PAAs do not affect the improvement of mechanical properties of the co-PI fibers.
CSD-System provides full web-based access (WebCSD) to the world's most comprehensive collection of crystal structure data, plus 3D searching, new advanced visualisations, intermolecular interaction analysis, geometry analysis, and support for tailored application building through the new CSD Python API.
An intermolecular interaction model to describe the transient thickening mechanism is presented.
R] dependence on the blend content could be explained, to a certain extent, with structural changes in the polymer melt as a result of which the intermolecular interaction is weakened and the flow is promoted.
It also allows for either simultaneous and sequential photo-stimulation or bleaching or image acquisition revealing high temporal and spatial resolution of intermolecular interaction.
From a more fundamental viewpoint, however, the sensitivity of the film towards externally applied perturbations appears to be a promising tool to get an improved insight into physical mechanisms, such as the dynamical interplay of slippage, intermolecular interaction and other properties of the liquid.
By providing the highest intermolecular interaction energies, ionic interactions have an extreme impact on molecular structures, which are the key to molecular functions.
In fabrication of the above organic-cyanoferrate composites, the polymer has stabilizing and dispersing functions due to intermolecular interaction and ion exchange.
3 substitution in 1,3-CHDA brought a nonsymmetric structure to the polyester, thus it reduced the intermolecular interaction that led to crystallinity.
The large positive q indicates that strong intermolecular interaction exists among the components in the blends and is stronger than the self-association interaction in one copolymer chain with increasing of MAAM and MAA contents.
3-CHDA were liquid at room temperature because the 1,3-substitution in 1,3-CHDA brought a nonsymmetric structure to the polyester, thus it reduced the intermolecular interaction that led to crystallinity.

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