JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
Miscellaneous Crystallization Techniques
Study on Preparation of a Low Density Polyethylene Particle by Emulsion Crystallization
Jae-Kyeong KimKwang-Joo KimIn-Ho Kim
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2002 Volume 35 Issue 11 Pages 1169-1177

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Abstract
In this work, an emulsion crystallization was made to investigate the possibility of the preparation of fine particles. The method selected was intended to prepare a micron-sized low density polyethylene particle. Dodecanol as a theta solvent and diethylene glycol as a non-solvent were selected. Operating conditions, such as composition of solution, concentration of polyethylene, stirring speed, and temperature of the polymer solution were investigated. The polymer particles obtained by emulsion crystallization were spherical, with mean size ranging from 0.5 μm to 5 μm. As a result, we observed the instability of the emulsion for crystallization conditions. This instability has an effect on the mean diameter and particle size distribution of the prepared particles.
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© 2002 The Society of Chemical Engineers, Japan
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