Details

Autor(en) / Beteiligte

• Ewert, Tessie R.
• Mannion, Alexander M.
• Coughlin, McKenzie L.
• Macosko, Christopher W.
• Bates, Frank S.

Titel

Influence of rheology on renewable pressure-sensitive adhesives from a triblock copolymer

Ist Teil von

• Journal of rheology (New York : 1978), 2018-01, Vol.62 (1), p.161-170

Erscheinungsjahr

2018

Quelle

American Institute of Physics

Beschreibungen/Notizen

• A poly(lactide-b-β-methyl-δ-valerolactone-b-lactide) (LVL) triblock copolymer was used to create fully sustainable pressure-sensitive adhesives (PSAs) that have promising commercial viability due to the low cost of both monomers. A common rosin ester tackifier was found to preferentially solubilize the midblock and was miscible up to 50% by weight. It was used to lower the modulus of the LVL triblock to satisfy the Dahlquist criterion. Small amplitude oscillatory shear, nonlinear shear creep, and uniaxial extensional data were correlated to tack, 180° peel, and shear resistance adhesion results. “Viscoelastic windows” were constructed for PSAs with 30%, 40%, and 50% tackifier and were used to identify potential candidates for general-use PSAs like Post-it® Notes.