Bio‐based and Degradable Block Polyester Pressure‐Sensitive Adhesives

• Published in: Angewandte Chemie International Edition Vol. 59; no. 52; pp. 23450 - 23455
• Main Authors: Chen, Thomas T. D., Carrodeguas, Leticia Peña, Sulley, Gregory S., Gregory, Georgina L., Williams, Charlotte K.
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 21.12.2020; John Wiley and Sons Inc
• Edition: International ed. in English
• Subjects: Additives; Adhesives; Adhesives - chemistry; block polyesters; Communication; Communications; degradable polymers; Formulations; Loss modulus; Monomers; Polyester resins; Polyesters; Polyesters - chemistry; Polymerization; polymers; ring-opening polymerization; Stability; block polyesters; polymers; degradable polymers; adhesives; ring-opening polymerization
• ISSN: 1433-7851; 1521-3773; 1521-3773
• DOI: 10.1002/anie.202006807

A new class of bio‐based fully degradable block polyesters are pressure‐sensitive adhesives. Bio‐derived monomers are efficiently polymerized to make block polyesters with controlled compositions. They show moderate to high peel adhesions (4–13 N cm−1) and controllable storage and loss moduli, and they are removed by adhesive failure. Their properties compare favorably with commercial adhesives or bio‐based polyester formulations but without the need for tackifier or additives. Well‐defined bio‐based triblock polyesters were prepared using a mixture of renewable monomers and a one‐pot synthetic method with a single catalyst. These materials are pressure‐sensitive adhesives and are easily degraded under acidic conditions.