Numerical simulation of a microwave driven low pressure plasma for pet bottle treatment

Due to a growing demand for bottles made of polyethylene terephthalate (PET) fast and efficient sterilization processes as well as barrier coating to decrease gas permeation are required. Plasma sterilization is an alternative way of sterilizing PET without using toxic ingredients (e.g. hydrogen per...

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Bibliographic Details
Main Authors: Szeremley, D., Brinkmann, R. P., Mussenbrock, T., Steves, S., Awakowicz, P., Kushner, M.
Format: Conference Proceeding
Language:English
Subjects:
Computer science
Educational institutions
Electrical engineering
Microwave technology
Numerical simulation
Plasmas
Positron emission tomography
Online Access:Request full text
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Summary:Due to a growing demand for bottles made of polyethylene terephthalate (PET) fast and efficient sterilization processes as well as barrier coating to decrease gas permeation are required. Plasma sterilization is an alternative way of sterilizing PET without using toxic ingredients (e.g. hydrogen peroxide or peracetic acid). To allow investigations in the field of plasma sterilization of PET bottles, a microwave plasma reactor has been developed. A coaxial waveguide combined with a gas-inlet, a modified plasmaline, is used for both coupling the microwave power and injecting the gas mixture into the bottle. One key parameter in the context of plasma treatment of bottles is the ion energy distribution function (IEDF) at the inner surface of the bottle. Numerical results for IEDFs performed by means of the Hybrid Plasma Equipment Model (HPEM) are presented. Plasmas with relevant gas mixtures (Ar, ArH 2 and ArO 2 ) at different pressures and input powers are examined. The numerical results are compared with experimentally obtained data.
ISSN:0730-9244
2576-7208
DOI:10.1109/PLASMA.2012.6383630