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High molecular mass polyethylene aqueous latexes by catalytic polymerization
1Institut für Makromolekulare Chemie und Freiburger Materialforschungszentrum der Albert-Ludwigs-Universität Freiburg Stefan-Meier-Strasse 31, 79104 Freiburg, Germany, Fax: (+49) 761-203-6319.
Angewandte Chemie (International Ed. in English)
|August 31, 2002
Summary
High molecular mass polyethylene microparticles are created using catalytic emulsion polymerization. This method yields stable polymer latexes in aqueous dispersions, useful for various applications.
Area of Science:
- Polymer Chemistry
- Materials Science
- Nanotechnology
Background:
- Polyethylene microparticles are valuable materials.
- Producing stable aqueous dispersions of high molecular mass polyethylene presents challenges.
Purpose of the Study:
- To develop a method for preparing semicrystalline microparticles of high molecular mass polyethylene in aqueous dispersions.
- To achieve stable polymer latexes through catalytic emulsion polymerization.
Main Methods:
- Catalytic emulsion polymerization of ethylene.
- Utilizing a mini-emulsified catalyst precursor: N,N'-bis(3,5-di-tert-butylsalicylidene)ethylenediiminocobalt(II) (D$ m{ rown}$D) with pyridine (L).
Main Results:
- Successfully prepared semicrystalline microparticles of high molecular mass polyethylene.
- Formed stable aqueous dispersions (latexes) of these polyethylene microparticles.
Conclusions:
- Catalytic emulsion polymerization with a mini-emulsified catalyst precursor is an effective method for producing stable polyethylene latexes.
- The developed method enables the preparation of high molecular mass polyethylene microparticles in aqueous media.