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A Study on Surface Charge Characteristics on Various Plastic Materials for Ttiboelectrostatic Separation of Plastic Wastes  

김도균 (서울대학교 지구환경 시스템 공학부)
조희찬 (서울대학교 지구환경 시스템 공학부)
전호석 (한국지질자원연구원)
Publication Information
Resources Recycling / v.11, no.3, 2002 , pp. 37-45 More about this Journal
Abstract
Triboelectrostatic Separation procese is a technology that different particles charged after contact and rubbing different materials are separated in an electric field. At this time, charged polarity of different materials depends on their own work function. Therefore this study discovers work functions of various plastics and determines charging characteristics for the specific optimum operation condition. The experiment is conducted with two sample sets composed of various different plastics. Each sample is charged by contact and rubbing different materials. Surface charge of charged particles is measured by Faraday Cage. The specific work function of an each plastic is driven by measured charging amount and charged particles are separated in a certain electric field ($\pm$20 kV). At last, the relationship between charging amount and separation efficiency is induced by the separation experiment.
Keywords
work function; plastics; triboelectrostatic separation; charging characteristics; work function; separation efficiency.;
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