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Wetting properties of stainless steel surfaces
Halmstad University, School of Business, Engineering and Science. (Funtional surfaces)
Halmstad University, School of Business, Engineering and Science. (Functional surfaces)
2016 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Systematic pre cleaning, disinfection and sterilization of medical equipment used in examination and treatment of patients are very important for safe care of the patients and the staff handling these instruments. Due to the technical properties of stainless steel, its hygienic experience and the sophisticated look of the stainless steel, it has dominated the medical health care environments for decades. The wetting properties of stainless steel surfaces are presumed to be essential for the process of clean ability and for a wide variety of bio compatibility.In collaboration with the topical company for this thesis, the idea is to find the correlation between the surface properties of various stainless steel in relation to their wetting and spreading ability to enable efficient cleaning of the surface. For a substrate surface to be thoroughly cleaned of any debris or soil, it should be able to allow proper adherence of the liquid across its surface to a certain degree good enough to ensure good wettability of the surface and conversely easy and proper removal of any attached soil on the surface. Higher demand on cleaning, disinfection and sterilization processes became more and more pressing due the development of complex medical equipment.Different stainless steel (316L) surface finishes and some surgical equipment are investigated using the state of the equipment at Halmstad University. Using the imaging interferometer and mapping software, Mountain Map, the results obtained is controlled readings and classification of the various surface parameters. Contact angle measurements were carried out on each surface with three polar (Distilled water, Glycerol and Ethylene glycol) and one non polar (Olive Oil) probe liquids with a drop volume of 3μm using Theta Optical Tensiometer and One Attention Software for the analysis. The impact and correlations of the surface parameters on wettability was later compared from the measurements obtained.

Place, publisher, year, edition, pages
2016. , 80 p.
Keyword [en]
wetting properties, contact angles, stainless steel, interferometer
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hh:diva-32598OAI: oai:DiVA.org:hh-32598DiVA: diva2:1052382
External cooperation
Getinge Infection Control AB
Subject / course
Mechanical Engineering
Presentation
2016-05-20, Halmstad, 10:45 (English)
Supervisors
Examiners
Available from: 2016-12-12 Created: 2016-12-06 Last updated: 2016-12-12Bibliographically approved

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fulltext(5452 kB)111 downloads
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CiteExportLink to record
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Citation style
  • apa
  • ieee
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  • vancouver
  • Other style
More styles
Language
  • de-DE
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  • en-US
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  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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