RheoTack - Rate dependent tack behavior of pressure sensitive adhesives – effect of composition and probe geometry

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/70883521:28610/23:63571118

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

RheoTack - Rate dependent tack behavior of pressure sensitive adhesives – effect of composition and probe geometry

Popis výsledku v původním jazyce

Transdermal therapeutic systems (TTS) are medical patches which are used for disease treatment by using controlled drug delivery through the human skin. For medical products, the requirements on the materials, especially on pressure sensitive adhesives (PSA) and backing layers, are highly demanding. Up to now, TTS development is based on adhesion tests originating from technical bonding purposes as the probe tack test, providing (as a one-point measurement) only limited information about the adhesion and release behavior of the TTS. Therefore, the newly developed method RheoTack is used to characterize the adhesion and release behavior of the silicone based amine compatible (AC) and non-amine compatible (NAC) PSA with different resin content νF (54.2-49.1%) by using two flat shaped rods (Ø = 5 and 8 mm) and a round shaped rod (Ø = 5mm) with varying retraction speeds νretract (0.01, 0.1 and 1 mm/s). The resulting force-retraction F-h displacement curves show the F-minima and the clear νF-dependent behavior as well as the clear difference between AC and NAC materials. Additionally, the F-h curves display νretract dependent behavior, indicating the viscoelastic behavior of the PSA. Furthermore, the F-h curves of the round shaped rod exhibit two F minima for low νretract, which might be caused by the round geometry and its rather complicated stress field.

Název v anglickém jazyce

RheoTack - Rate dependent tack behavior of pressure sensitive adhesives – effect of composition and probe geometry

Popis výsledku anglicky

Transdermal therapeutic systems (TTS) are medical patches which are used for disease treatment by using controlled drug delivery through the human skin. For medical products, the requirements on the materials, especially on pressure sensitive adhesives (PSA) and backing layers, are highly demanding. Up to now, TTS development is based on adhesion tests originating from technical bonding purposes as the probe tack test, providing (as a one-point measurement) only limited information about the adhesion and release behavior of the TTS. Therefore, the newly developed method RheoTack is used to characterize the adhesion and release behavior of the silicone based amine compatible (AC) and non-amine compatible (NAC) PSA with different resin content νF (54.2-49.1%) by using two flat shaped rods (Ø = 5 and 8 mm) and a round shaped rod (Ø = 5mm) with varying retraction speeds νretract (0.01, 0.1 and 1 mm/s). The resulting force-retraction F-h displacement curves show the F-minima and the clear νF-dependent behavior as well as the clear difference between AC and NAC materials. Additionally, the F-h curves display νretract dependent behavior, indicating the viscoelastic behavior of the PSA. Furthermore, the F-h curves of the round shaped rod exhibit two F minima for low νretract, which might be caused by the round geometry and its rather complicated stress field.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings ICEM20 Experimental Mechanics in Engineering and Biomechanics

ISBN

978-989-54-7566-7

ISSN

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e-ISSN

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Počet stran výsledku

2

Strana od-do

51-52

Název nakladatele

INEGI-FEUP

Místo vydání

Porto

Místo konání akce

Porto

Datum konání akce

2. 7. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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