Removal Behavior of Different Surface Charge Particulate Soil from Hydrophilic and Hydrophobic Films 


Vol. 53,  No. 4, pp. 241-249, Aug.  2016
10.12772/TSE.2016.53.241


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  Abstract

The removal behavior of α-Fe2O3 and carbon black particles from surfacemodified PET[poly(ethylene terephthalate)] films were investigated as functions of surfactant concentration and type. Moreover, the ζ-potential, the potential energy between particles and film, and the adsorption of surfactants to the film were examined as detergent environments. The function of the two-step plasma treatments of O2 and O2+CHF3 was to impart hydrophilicity and hydrophobicity to PET film respectively. The negative ζ-potential of the film, the potential energy between the particles and film, and the adsorption of surfactants by the film increased with the two-step plasma treatment of O2 and O2+CHF3. Generally, the removal of α-Fe2O3 particles from the modified PET film was higher than that of carbon black particles. However, the removal behaviors of α-Fe2O3 and carbon black particles were different depending on the surface property of the PET films. There was no difference in the removal behavior between α-Fe2O3 and carbon black particles in the hydrophilic film; however, there was a significant difference between behaviors of the two particles in the hydrophobic film. With α-Fe2O3 particles having a high surface charge, the removal of particles from the film increased with increasing film hydrophobicity. On the other hand, in the case of low surface charge carbon black particles, their removal from the film decreased with increasing film hydrophobicity.

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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)