Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Solvents01:12

Solvents

63.9K
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute.
A...
63.9K
Intermolecular Forces03:13

Intermolecular Forces

56.2K
Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen...
56.2K
Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

180
Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...
180
Solubility Equilibria: Overview01:09

Solubility Equilibria: Overview

563
When a substance such as sodium chloride is added to water, it dissolves, forming an aqueous solution. The extent of dissolution is called solubility. The process of dissolution can exist in equilibrium, just like other chemical processes. Solubility equilibria are also called precipitation equilibria because the process of solubility can be reversible. The reverse of the solubility process is called precipitation.
Solubility is important in biological and environmental processes. A notable...
563
Solution Formation02:16

Solution Formation

30.9K
There is no one solvent that can dissolve every type of solute. Some substances that readily dissolve in a certain solvent might be insoluble in a different solvent. A simple way to predict which substances dissolve in which solvent is the phrase "like dissolves like". This means that polar substances, such as salt and sugar, dissolve in a polar substance like water. In contrast, non-polar substances are more soluble in non-polar solvents such as carbon tetrachloride.
This selective...
30.9K
Solubility Equilibria03:07

Solubility Equilibria

51.7K
Solubility equilibria are established when the dissolution and precipitation of a solute species occur at equal rates. These equilibria underlie many natural and technological processes, ranging from tooth decay to water purification. An understanding of the factors affecting compound solubility is, therefore, essential to the effective management of these processes. This section applies previously introduced equilibrium concepts and tools to systems involving dissolution and precipitation.
The...
51.7K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Four-Jet Rate in Electron-Positron Annihilation at Order α_{s}^{4}.

Physical review letters·2026
Same author

Development of high protein 3D printed dysphagia salmon analogs based on walnut protein-egg white protein emulsion gels.

Food chemistry·2026
Same author

CARS_SPA optimized UV-Vis spectroscopy for rapid and robust COD prediction in water samples.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

Simplified spectral fluctuation correction method of LIBS based on plasma image assistance.

Talanta·2026
Same author

Effects of post-treatment systolic blood pressure on adverse outcomes in hypertensive population with comorbidity.

Scientific reports·2026
Same author

Saltiness Enhancement Modulated by Hydrophobic Mucoadhesion of Soy Hull Pectic-Like Polysaccharides within a Salivary Mucin Layer.

Journal of agricultural and food chemistry·2026

Related Experiment Video

Updated: May 15, 2025

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
04:54

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Published on: January 17, 2017

16.1K

Solvent-Assisted CO2 Foaming Induced Ultralarge Pore Span Hierarchically Porous Polyimide.

Huiting Sun1,2, Mingchao Shao1,3, Qi Guo1,2

  • 1State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.

ACS Applied Materials & Interfaces
|April 9, 2025
PubMed
Summary

Researchers developed a new method using supercritical CO2 foaming to create hierarchically porous polyimide (HPPI) foams. These lightweight HPPI materials offer improved oil storage and high-temperature resistance for aerospace and deep-sea applications.

Keywords:
hierarchical poresmechanical componentspolyimide foamrigid polyimidesolvent-assisted supercritical CO2 foaming

More Related Videos

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

14.7K
Preparation of Biopolymer Aerogels Using Green Solvents
08:13

Preparation of Biopolymer Aerogels Using Green Solvents

Published on: July 4, 2016

17.5K

Related Experiment Videos

Last Updated: May 15, 2025

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
04:54

Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices

Published on: January 17, 2017

16.1K
Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials
09:05

Supercritical Nitrogen Processing for the Purification of Reactive Porous Materials

Published on: May 15, 2015

14.7K
Preparation of Biopolymer Aerogels Using Green Solvents
08:13

Preparation of Biopolymer Aerogels Using Green Solvents

Published on: July 4, 2016

17.5K

Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Chemical Engineering

Background:

  • Hierarchically porous composite materials offer advanced properties for demanding engineering applications.
  • Current methods for creating hierarchically porous polyimide (HPPI) face limitations in performance stability and control.
  • Developing efficient, eco-friendly, and controllable methods for HPPI fabrication is crucial.

Purpose of the Study:

  • To introduce a novel solvent-assisted supercritical CO2 foaming strategy for producing HPPI.
  • To demonstrate the ability to regulate porosity across multiple scales (15-75%).
  • To explore the potential of HPPI in applications requiring lightweight, high-performance materials.

Main Methods:

  • Utilized a solvent-assisted supercritical CO2 foaming technique.
  • Controlled foaming conditions to tailor pore structure and size distribution.
  • Fabricated mechanical parts from the developed HPPI materials.

Main Results:

  • Successfully synthesized HPPI with tunable porosity ranging from 15% to 75%.
  • HPPI mechanical parts exhibited enhanced oil storage and supply capacity.
  • Achieved reduced material weight while maintaining excellent dimensional stability and high-temperature resistance.
  • Demonstrated the strategy's versatility across different thermoplastic polyimide systems.

Conclusions:

  • The proposed strategy offers an efficient and controllable route to hierarchically porous polyimide materials.
  • HPPI foams show promise for applications in aerospace, deep-sea exploration, and high-temperature buffering.
  • This advancement opens new avenues for utilizing advanced engineering polymers in extreme environments.