Molecular parameters and their relation to the adhesive performance of emulsion acrylic pressure-sensitive adhesives. II. Effect of crosslinking
2001; Wiley; Volume: 79; Issue: 14 Linguagem: Inglês
10.1002/1097-4628(20010401)79
ISSN1097-4628
AutoresSinga D. Tobing, Andrew Klein,
Tópico(s)Photopolymerization techniques and applications
ResumoAcrylic emulsion pressure-sensitive adhesive (PSA) films generally have much lower shear holding power than that of their solvent-borne counterparts for the same peel and tack. This is due to their discrete microgel morphology in the film. In contrast, film cast from solution-polymerized acrylic PSA forms a continuous network as a result of crosslinking acrylic acid and aluminum acetyl acetonate (AAA) in the film following the solvent evaporation. Novel acrylic emulsion PSA was made by copolymerizing ≤1 wt % isobutoxy methyl acrylamide (IBMA) in the polymer backbone. The IBMA grafted the linear portion of the acrylic polymer with the microgels upon heating the film, which resulted in a significant increase in the shear holding power. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 79: 2558–2564, 2001
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