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

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

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)161-170
Number of pages10
JournalJournal of Rheology
Volume62
Issue number1
DOIs
StatePublished - Jan 1 2018

Bibliographical note

Funding Information:
This work was supported by the National Science Foundation through the Center for Sustainable Polymers at the University of Minnesota, a Center for Chemical Innovation (CHE-1413862) and through a NSF Graduate Fellowship (Grant No. 0006595 to T.R.P.). The authors thank Dr. Deborah Schneiderman for help with the PMVL synthesis and Dr. David Giles for assistance with troubleshooting the rheometers. Portions of this work were performed at the DuPont−Northwestern−Dow Collaborative Access Team (DND-CAT) located at Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by E. I. DuPont de Nemours & Co., The Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357. The authors acknowledge and thank H. B. Fuller for allowing them to conduct peel and loop tack tests at their facility and Kim Larson and Amanda Schmit for helping with data collection. Frank S. Bates has royalty interests in, and serves as Chief Financial Officer and on the Board of Directors of Valerian Materials, a company involved in the commercialization of β-methyl-δ-valerolactone. The University of Minnesota also has equity and royalty interests in Valerian Materials. These interests have been reviewed and managed by the University of Minnesota in accordance with its Conflict of Interest policies.

Funding Information:
This work was supported by the National Science Foundation through the Center for Sustainable Polymers at the University of Minnesota, a Center for Chemical Innovation (CHE-1413862) and through a NSF Graduate Fellowship (Grant No. 0006595 to T.R.P.). The authors thank Dr. Deborah Schneiderman for help with the PMVL synthesis and Dr. David Giles for assistance with troubleshooting the rheometers. Portions of this work were performed at the DuPont-Northwestern-Dow Collaborative Access Team (DND-CAT) located at Sector 5 of the Advanced Photon Source (APS). DND-CAT is supported by E. I. DuPont de Nemours & Co., The Dow Chemical Company, and Northwestern University. Use of the APS, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory, was supported by the U.S. DOE under Contract No. DE-AC02-06CH11357.

Publisher Copyright:
© 2017 The Society of Rheology.

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