Multipurpose Degradable Physical Adhesive Based on Poly(d, l‐lactide‐co‐trimethylene Carbonate). Issue 10 (20th April 2020)

• Record Type: Journal Article
• Authors: Fuoco, Tiziana; Almas, Ria Afifah; Finne‐Wistrand, Anna
• Is Part Of: Macromolecular chemistry and physics. Volume 221:Issue 10(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-04-20
• Subjects: amorphous copolymers -- degradable polyesters -- glass transition temperature -- physical adhesives; Polymers -- Periodicals; Polymerization -- Periodicals; Synthetic products -- Periodicals; Macromolecules -- Periodicals; 547.7
• DOI: 10.1002/macp.202000034
• Languages: English
• ISSNs: 1022-1352

Abstract

Abstract: Solutions of amorphous poly(d, l ‐lactide‐ co ‐trimethylene carbonate)s (PDLTMCs) in ethyl acetate work as solvent‐based physical adhesives through diffusion mechanisms for a variety of aliphatic polyester‐based adherents. The random PDLTMCs with a trimethylene carbonate content of 11, 16, and 20 mol% are synthesized in bulk, achieving high molecular weight, M n, up to 128 kg mol −1 and dispersity around 1.7. The PDLTMCs are amorphous and have a glass transition temperature in the range 34.7 to 43.6 °C and in agreement with the theoretical values calculated using the Fox equation. The mechanical and surface properties of the PDLTMCs are tested preparing solvent cast films, which are soft and tough and, although they have a higher contact angle than the parent homopolymer, they show higher water uptake capacity. The potential application as adhesives of the synthesized PDLTMCs is evaluated by preparing a 20 wt% solution in ethyl acetate and testing them by adhering films with different compositions as well as constructs having different geometries and surface roughness. The results demonstrate that the adhesion strength is higher on adherent films having similar chemical compositions as the adhesives and on surfaces having similar compositions to each other but different roughness. The similar chemical nature of the adhesive and adherent probably favors the diffusion mechanism through which adhesion takes place. Abstract : Multipurpose, degradable physical adhesives based on a solution of amorphous poly(d, l ‐lactide‐ co ‐trimethylene carbonate) copolymers in a benign solvent like ethyl acetate, are described. The role of copolymer composition on macromolecular properties and adhesion strength is discussed and the versatile applicability of the adhesives for the fabrication of multicomponent scaffolds for tissue engineering application demonstrated.