Development of a Mechano-Responsive Ink For Security Printing
Document Type
Conference Proceeding
Publication Date
1-1-2017
School
Polymer Science and Engineering
Abstract
Security printing is an emerging field to prevent forgery, tampering, and counterfeiting of a wide variety of documents and consumer goods. In this work, mechanochromic ink for security printing is suggested as a viable option for a reversible, easily detectable way of determining the legitimacy of a document or product. Generally, mechanochromic polymers change color and exhibit fluorescence in response to a mechanical force due to the presence of mechanophore molecules covalently linked within the polymer structure. A well-known mechanophore, spiropyran (SP), is easily incorporated into poly(dimethylsiloxane) (PDMS), an elastomeric polymer. In this study, SP-PDMS ink for security printing applications is studied by tuning the initial viscosity with a solvent. Additionally, the printed film quality is determined through both optical and mechanical techniques. Printing conditions were determined for printing with a Nordson Engineered Fluid Dispensing (EFD) Printer. The responsiveness of the mechanochromic ink to mechanical loading is explored through visible color change.
Publication Title
International Conference on Digital Printing Technologies
Volume
2017-November
First Page
80
Last Page
85
Recommended Citation
Casey, C.,
Dulal, R.,
Clouse, D.,
Degen, C.,
Kellar, J.
(2017). Development of a Mechano-Responsive Ink For Security Printing. International Conference on Digital Printing Technologies, 2017-November, 80-85.
Available at: https://aquila.usm.edu/fac_pubs/19191
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