doi:10.3390/molecules25235740engBensabeh, N.Jiménez-Alesanco, A.Liblikas, I.Ronda, J.C.Cádiz, V.Galià, M.Vares, L.Abián, O.Lligadas, G.Biosourced All-Acrylic ABA Block Copolymers with Lactic Acid-Based Soft PhaseART-2020-121801Lactic acid is one of the key biobased chemical building blocks, given its readily availability from sugars through fermentation and facile conversion into a range of important chemical intermediates and polymers. Herein, well-defined rubbery polymers derived from butyl lactate solvent were successfully prepared by reversible addition-fragmentation chain transfer (RAFT) polymerization of the corresponding monomeric acrylic derivative. Good control over molecular weight and molecular weight distribution was achieved in bulk using either monofunctional or bifunctional trithiocarbonate-type chain transfer agents. Subsequently, poly(butyl lactate acrylate), with a relative low Tg (-20 °C), good thermal stability (5% wt. loss at 340 °C) and low toxicity was evaluated as a sustainable middle block in all-acrylic ABA copolymers using isosorbide and vanillin-derived glassy polyacrylates as representative end blocks. Thermal, morphological and mechanical properties of copolymers containing hard segment contents of <20 wt% were evaluated to demonstrate the suitability of rubbery poly(alkyl lactate) building blocks for developing functional sustainable materials. Noteworthy, 180° peel adhesion measurements showed that the synthesized biosourced all-acrylic ABA copolymers possess competitive performance when compared with commercial pressure-sensitive tapes.2020http://zaguan.unizar.es/record/9742210.3390/molecules25235740http://zaguan.unizar.es/record/97422oai:zaguan.unizar.es:97422info:eu-repo/grantAgreement/ES/DGA/B25-20Rinfo:eu-repo/grantAgreement/ES/ISCIII/CPII13-00017info:eu-repo/grantAgreement/ES/ISCIII-ERDF-ESF/PI18-00349-Investing in your futureinfo:eu-repo/grantAgreement/ES/MCIU/MAT2017-82669-RMolecules 25, 23 (2020), 5740byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess