Iranian Journal of Polymer Science and Technology

Iranian Journal of Polymer Science and Technology

Evaluation of Adhesion Properties of Acrylic/Silicone Pressure Sensitive Adhesives Blends

Document Type : Research Paper

Authors
S.Mojtaba Taghizadeh
Hamid Mirzadeh
Mehdi Barikani
Arezo Soroushnia
10.22063/jipst.2013.626
Abstract
In this study the blends of acrylic/silicone pressure sensitive adhesive (PSA) were prepared, and their adhesion properties and surface morphology were evaluated. For this purpose appropriate amounts of acrylic (10- 90%w/w) were added to silicone PSA to obtain visually homogeneous solution. The resulting solution was evenly applied on a polyethylene terephthalate (PET) film with final specific thicknesses (35, 65 and 110 μm) by using a film applicator. The morphological analysis was performed through scanning electron microscopy (SEM) and by the study of thermal analysis using the differential mechanical thermal analysis (DMTA) behavior of the blends, and it was found that all acrylic/silicone blends were incompatible and showed two different glass transition temperatures. By addition of silicone from 10 to 50% to acrylic/silicone blends the continuous phase is acrylic and the dispersed phase is silicone. Equally by increasing the percentage of silicone in the blends the continuous and dispersed phases were interchanged. By study of surface analysis and peel strength results it was found that surface properties are the main factors to determine peel strength values. Viscoelastic studies of the blends were shown that tack values and G" showed the same changing trend.
Keywords
pressure sensitive adhesives blend
tack
peel strength
adhesion properties
Iranian Journal of Polymer Science and Technology
Volume 22, Issue 2 - Serial Number 2
July and August 2009
Pages 97-105