Mechanical and Chemical Stability of Injection-Molded Microcantilevers Used for Sensing

Urwyler, Prabitha; Pascual, Alfons; Kristiansen, Per Magnus; Gobrecht, Jens; Müller, Bert; Schift, Helmut (2013). Mechanical and Chemical Stability of Injection-Molded Microcantilevers Used for Sensing. Journal of Applied Polymer Science, 127(4), pp. 2363-2370. Wiley Periodicals 10.1002/app.37767

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Ultraviolet-ozone treatment is used as a standard surface cleaning procedure for removal of molecular organic contamination from analytical and sensing devices. Here, it is applied for injection-molded polymer microcantilevers before characterization and sensing experiments. This article examines the effects of the surface cleaning process using commercial equipment, in particular on the performance and mechanical properties of the cantilevers. It can be shown that the first chemical aging process essentially consist of the cross linking of the polymer chains together with a physical aging of the material. For longer exposure, the expected thermo-oxidative formation of carbonyl groups sets in and an exposure dependent chemical degradation can be detected. A process time of 20 min was found suitable as a trade-off between cleaning and stability

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation

UniBE Contributor:

Urwyler-Harischandra, Prabitha

Subjects:

500 Science > 530 Physics
500 Science > 540 Chemistry
500 Science > 570 Life sciences; biology
600 Technology
600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

ISSN:

1097-4628

Publisher:

Wiley Periodicals

Language:

English

Submitter:

Prabitha Urwyler-Harischandra

Date Deposited:

11 Apr 2014 11:24

Last Modified:

11 Apr 2014 11:24

Publisher DOI:

10.1002/app.37767

Uncontrolled Keywords:

microcantilever, polymer, injection molding, ultraviolet, ozone, degradation, polypropylene

URI:

https://boris.unibe.ch/id/eprint/48968

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