TY  - JOUR
U1  - Zeitschriftenartikel, wissenschaftlich - begutachtet (reviewed)
A1  - Meurer, Michael
A1  - Prescher, Tim
A1  - Ramakers-van Dorp, Esther
A1  - Möginger, Bernhard
A1  - Hausnerova, Berenika
T1  - RheoTack—An approach to investigate retraction rate dependent detaching behavior of pressure sensitive adhesives
JF  - Journal of Rheology
N2  - Characterization methods of pressure sensitive adhesives (PSA) originate from technical bonding and do not cover relevant data for the development and quality assurance of medical applications, where PSA with flexible backing layers are adopted to human skin. In this study, a new method called RheoTack is developed to determine (mechanically and optically) an adhesion and detaching behavior of flexible and transparent PSA based patches. Transdermal therapeutic systems (TTS) consisting of silicone-based PSAs on a flexible and transparent backing layer were tested on a rotational rheometer with an 8 mm plate as a probe rod at retraction speeds of 0.01, 0.1, and 1 mm/s with respect to their adhesion and detaching behavior in terms of force-retraction displacement curves. The curves consist of a compression phase to affirm wetting; a tensile deformation phase intercepting stretching, cavity, and fibril formation; and a failure phase with detaching. Their analysis provides values for stiffness, force, and displacement of the beginning of fibril formation, force and displacement of the beginning of a failure due to fibril breakage and detaching, as well as corresponding activation energies. All these parameters exhibit the pronounced dependency on the retraction speed. The force-retraction displacement curves together with the simultaneous video recordings of the TTS deformation from three different angles (three cameras) provide deeper insight into the deformation processes and allow for interpreting the properties’ characteristics for PSA applications.
KW  - deformation behavior
KW  - pressure sensitive adhesives
KW  - detaching
KW  - RheoTack analysis
KW  - retraction speed dependency
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-61436
SN  - 0148-6055
SS  - 0148-6055
U6  - https://doi.org/10.1122/8.0000405
DO  - https://doi.org/10.1122/8.0000405
N1  - The datasets generated during and/or analyzed during the current study are available in the Zenodo open repository maintained by https://doi.org/10.5281/zenodo.5603015.
VL  - 66
IS  - 3
SP  - 505
EP  - 514
S1  - 10
PB  - AIP Publishing
ER  -