Preparation And Characterization Of Waterborne Acrylic Latex Polymers Pressure-Sensitive Adhesives
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Date
2011-10
Authors
Yew, Fang Wey
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
Acrylic pressure-sensitive adhesives obtained by emulsion polymerization are
environmental friendly adhesives. The monomers chosen were butyl-acrylate, acrylic
acid, 2-ethylhexyl acrylate, methyl methacrylate, and 2-hydroxyethyl acrylate. The
effect of varied monomer composition on adhesive performance is studied. The
particle sizes of adhesives were measured by using CILAS 1180 Laser Particle Size
Analyzer. ATR-FTIR spectroscopy was used to determine the wave number of
acrylate emulsions obtained. The adhesives obtained with constant thickness were
coated onto a Kraft paper and evaluated for adhesive performance by measuring their
loop tack, peel strength and dynamic shear strength. With increasing of MMA and
AA content, peel strength was found to increase and loop tack decreased. Hydrogen
bond formed through the carboxylic acid functional group increased the peel strength.
As the MMA content increased, the latex gel fractions were found to decrease. With
decreasing of gel fraction, dynamic shear strength was found to decrease. As the 2-
EHA content increased, dynamic shear strength and peel strength were found to
increase. Peel strength and dynamic shear strength showed an increase with
decreasing of particle size.
Description
Keywords
Characterization of waterborne acrylic latex , polymers pressure-sensitive adhesives