相关实验视频

Updated: Jul 23, 2025

Accurate Determination of the Equilibrium Surface Tension Values with Area Perturbation Tests
00:07

Accurate Determination of the Equilibrium Surface Tension Values with Area Perturbation Tests

Published on: August 30, 2019

7.5K

汉森可溶性参数用于直接处理表面和界面现象.

Masakazu Murase1, Daisuke Nakamura1

  • 1Toyota Central R&D Laboratories, Inc., Nagakute, Aichi 480-1192, Japan.

Langmuir : the ACS journal of surfaces and colloids
|July 18, 2023
PubMed
概括

这项研究引入了一个新的方程,用汉森溶解度参数 (HSP) 来估计表面和界面张力. 这种方法成功地预测了聚合物湿透性,为更广泛的应用统一了散装和表面特性.

更多相关视频

Extraction and Characterization of Surfactants from Atmospheric Aerosols09:34

Extraction and Characterization of Surfactants from Atmospheric Aerosols

Published on: April 21, 2017

16.9K
A New Straightforward Method for Lipophilicity logP Measurement using 19F NMR Spectroscopy09:32

A New Straightforward Method for Lipophilicity logP Measurement using 19F NMR Spectroscopy

Published on: January 30, 2019

14.4K

相关概念视频

Entropy and Solvation02:05

Entropy and Solvation

The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.1K
Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility02:34

Comparing Intermolecular Forces: Melting Point, Boiling Point, and Miscibility

Intermolecular forces are attractive forces that exist between molecules. They dictate several bulk properties, such as melting points, boiling points, and solubilities (miscibilities) of substances. Molar mass, molecular shape, and polarity affect the strength of different intermolecular forces, which influence the magnitude of physical properties across a family of molecules.
Temporary attractive forces like dispersion are present in all molecules, whether they are polar or nonpolar. They...
44.6K
Intermolecular Forces and Physical Properties02:56

Intermolecular Forces and Physical Properties

20.9K
Enthalpy of Solution02:39

Enthalpy of Solution

There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
24.9K
Factors Affecting Dissolution: Drug pKa, Lipophilicity and GI pH01:21

Factors Affecting Dissolution: Drug pKa, Lipophilicity and GI pH

Drug absorption within the gastrointestinal (GI) tract is a complex process influenced by several critical factors, including the site pH, the drug's dissociation constant (pKa), and the drug's lipophilicity. The GI tract exhibits a pH gradient, with an acidic environment in the stomach and a more alkaline environment in the small intestine. This pH variation directly affects the ionization state of drugs.
A drug's pKa and the pH of the gastrointestinal (GI) tract play crucial roles...
1.6K
Chemical and Solubility Equilibria02:21

Chemical and Solubility Equilibria

The free energy change associated with dissolving a solute in a liter of solvent is called the free energy of a solution, ΔGsolution. The overall ΔGsolution is expressed as the balance of ΔGinteraction against the always-favorable free-energy of mixing, ΔGmixing. Solution formation is favorable if  ΔGsolution is less than zero, whereas it is unfavorable if ΔGsolution is greater than zero. In short, for a solution to form and complete dissolution to take place,...
4.2K