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 Experiment Videos

Cation pool-initiated controlled/living polymerization using microsystems.

Aiichiro Nagaki1, Kohsuke Kawamura, Seiji Suga

  • 1Department of Synthetic Chemistry and Biological Chemistry and Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan.

Journal of the American Chemical Society
|November 13, 2004
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

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

Sort by
Same author

Polyolefin cyclization triggered by electrochemically generated alkoxycarbenium ions: batch and flow conditions.

Chemical science·2026
Same author

Flow-Microreactor-Enabled Chemoselective Anionic Polymerization of Styrenes Bearing Alkoxysilyl Groups.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

Real-Time Visualization of Turbulent Micromixing in a T-Mixer: Submillisecond Homogenization Revealed by Chemiluminescence.

Analytical chemistry·2026
Same author

Development of Azulene-Based Chromophore for Color-Responsive Self-Assembly Enabled by Flow Chemistry.

The Journal of organic chemistry·2026
Same author

Anion Mask Strategy Enabling Organolithium Species Bearing Formyl Groups: Protecting-Group-Free Synthesis for Unsymmetric Dicarbonyl Arenes.

The Journal of organic chemistry·2026
Same author

Water-compatible acylation reactions with acid chlorides using a flow microreactor.

Chemical communications (Cambridge, England)·2026

A novel "cation pool" method initiated cationic polymerization in a microsystem, yielding polymers with narrow molecular weight distribution. This approach offers highly controlled polymerization without typical dynamic equilibrium issues.

Area of Science:

  • Polymer Chemistry
  • Microsystems Engineering

Background:

  • Cationic polymerization of vinyl ethers often faces challenges with control and deceleration due to dynamic equilibria.
  • N-acyliminium ions offer potential as initiators but require suitable reaction environments.

Purpose of the Study:

  • To investigate the use of an N-acyliminium ion
  • cation pool
  • as an initiator for cationic polymerization within a microsystem.
  • To achieve highly controlled polymerization with narrow molecular weight distribution.

Main Methods:

  • Utilized a microsystem comprising two micromixers and a microtube reactor.
  • Employed the
  • cation pool
  • of an N-acyliminium ion to initiate polymerization of vinyl ethers.

Related Experiment Videos

  • Trapped carbocationic polymer ends using allyltrimethylsilane.

    • Main Results:

    • Achieved cationic polymerization of vinyl ethers with very narrow molecular weight distribution (Mw/Mn = 1.14).
    • Demonstrated a linear relationship between polymer molecular weight (Mn) and monomer concentration.
    • Confirmed effective trapping of carbocationic polymer ends.

    Conclusions:

    • Microsystems combined with the
    • cation pool
    • method enable highly controlled cationic polymerization.
    • This technique overcomes the deceleration typically observed in dynamic equilibrium polymerization systems.