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

Superplasticizers01:30

Superplasticizers

239
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
239
Plasticizers01:31

Plasticizers

276
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
276
Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

2.5K
The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...
2.5K
Polymer Classification: Stereospecificity01:26

Polymer Classification: Stereospecificity

3.1K
Polymerization generates chiral centers along the entire backbone of a polymer chain. Accordingly, the stereochemistry of the substituent group has a significant effect on polymer properties. Polymers formed from monosubstituted alkene monomers feature chiral carbons at every alternate position in the polymer backbone. Relative to the predominant orientation of substituents at the adjacent chiral carbons, the polymer can exist in three different configurations: isotactic, syndiotactic, and...
3.1K
Phase Diagrams02:39

Phase Diagrams

48.0K
A phase diagram combines plots of pressure versus temperature for the liquid-gas, solid-liquid, and solid-gas phase-transition equilibria of a substance. These diagrams indicate the physical states that exist under specific conditions of pressure and temperature and also provide the pressure dependence of the phase-transition temperatures (melting points, sublimation points, boiling points). Regions or areas labeled solid, liquid, and gas represent single phases, while lines or curves represent...
48.0K
Supercritical Fluid Chromatography01:18

Supercritical Fluid Chromatography

772
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,...
772

You might also read

Related Articles

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

Sort by
Same author

Development of Biological-Window-Active Au Open-Shell Nanoparticles with High-Sensitivity Surface-Enhanced Raman Scattering Imaging Probe Properties.

Nanomaterials (Basel, Switzerland)·2026
Same author

Single-nucleus transcriptional and chromatin accessibility analyses of maturing mouse Achilles tendon uncover the molecular landscape of tendon stem/progenitor cells.

eLife·2026
Same author

SRRM4 Knockout Helps the Human Mesenchymal Stem Cell Line to Penetrate Decellularized Cancellous Bone.

Bioengineering (Basel, Switzerland)·2025
Same author

Decellularized porcine pericardium supports periodontal ligament tissue regeneration and attenuates root resorption in a tooth replantation model.

Dental materials journal·2025
Same author

ECM-Preserving Decellularization of Dermis via Subtle Cell Membrane Disruption Induced by Subcritical Dimethyl Ether.

ACS omega·2025
Same author

Recellularization of decellularized vascular grafts via aligned seeding of endothelial cells derived from human iPS cells.

Scientific reports·2025

Related Experiment Video

Updated: Dec 31, 2025

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
09:22

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

Published on: August 28, 2015

19.6K

Characterization of Engineering Plastics Plasticized Using Supercritical CO2.

Masaki Watanabe1, Yoshihide Hashimoto1, Tsuyoshi Kimura1

  • 1Department of Material-Based Medical Engineering, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo 101-0062, Japan.

Polymers
|January 16, 2020
PubMed
Summary

This study explored engineering plastics processed with supercritical carbon dioxide (CO2). While CO2 plasticization at low temperatures preserved molecular weight, it significantly reduced mechanical strength and electrical properties, indicating potential for novel low-temperature molding.

Keywords:
engineering plasticspolyarylatepolycarbonatepolysulfonesupercritical CO2

More Related Videos

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs
10:06

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

Published on: July 2, 2020

7.2K
Preparation of Biopolymer Aerogels Using Green Solvents
08:13

Preparation of Biopolymer Aerogels Using Green Solvents

Published on: July 4, 2016

18.1K

Related Experiment Videos

Last Updated: Dec 31, 2025

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications
09:22

Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications

Published on: August 28, 2015

19.6K
Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs
10:06

Microfluidic Fabrication Techniques for High-Pressure Testing of Microscale Supercritical CO2 Foam Transport in Fractured Unconventional Reservoirs

Published on: July 2, 2020

7.2K
Preparation of Biopolymer Aerogels Using Green Solvents
08:13

Preparation of Biopolymer Aerogels Using Green Solvents

Published on: July 4, 2016

18.1K

Area of Science:

  • Materials Science
  • Polymer Engineering
  • Chemical Engineering

Background:

  • Traditional molding processes for engineering plastics often require high temperatures, potentially degrading polymer properties.
  • Supercritical fluids, like carbon dioxide (CO2), offer alternative processing methods due to their unique solvating and swelling capabilities.
  • Investigating supercritical CO2 for plasticizing engineering plastics at lower temperatures is crucial for developing advanced material processing techniques.

Purpose of the Study:

  • To evaluate the physical and chemical property changes in engineering plastics after processing with supercritical CO2.
  • To assess the feasibility of using supercritical CO2 for low-temperature plasticization and molding of engineering plastics.

Main Methods:

  • Engineering plastic test pieces were prepared using a standard molding process.
  • Samples were plasticized using supercritical CO2 at temperatures below their glass-transition points.
  • Physical properties (mechanical strength, surface roughness, contact angle) and electrical properties (rate of charging) were measured.

Main Results:

  • Supercritical CO2 treatment plasticized amorphous polymers without significant changes in molecular weight.
  • Mechanical strength decreased significantly post-treatment, despite unchanged molecular weight.
  • Surface roughness and contact angle showed slight increases, while electrical properties, including the rate of charging, decreased substantially.

Conclusions:

  • Supercritical CO2 processing can plasticize engineering plastics at sub-glass-transition temperatures.
  • This method alters material properties, notably reducing mechanical and electrical performance.
  • The findings suggest potential for a novel, low-temperature molding process using supercritical CO2, tailored to specific property requirements.