Biosourced All-Acrylic ABA Block Copolymers with Lactic Acid-Based Soft Phase

Bensabeh, N. ; Jiménez-Alesanco, A. (Universidad de Zaragoza) ; Liblikas, I. ; Ronda, J.C. ; Cádiz, V. ; Galià, M. ; Vares, L. ; Abián, O. (Universidad de Zaragoza) ; Lligadas, G.

Resumen: Lactic 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.

Idioma: Inglés

DOI: 10.3390/molecules25235740

Año: 2020

Publicado en: Molecules 25, 23 (2020), 5740
ISSN: 1420-3049

Factor impacto JCR: 4.411 (2020)

Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 63 / 178 = 0.354 (2020) - Q2 - T2
Categ. JCR: BIOCHEMISTRY & MOLECULAR BIOLOGY rank: 116 / 297 = 0.391 (2020) - Q2 - T2

Factor impacto SCIMAGO: 0.782 - Analytical Chemistry (Q1) - Chemistry (miscellaneous) (Q1) - Drug Discovery (Q1) - Physical and Theoretical Chemistry (Q1) - Molecular Medicine (Q1) - Organic Chemistry (Q1) - Pharmaceutical Science (Q1) - Medicine (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/B25-20R
Financiación: info:eu-repo/grantAgreement/ES/ISCIII/CPII13-00017
Financiación: info:eu-repo/grantAgreement/ES/ISCIII-ERDF-ESF/PI18-00349-Investing in your future
Financiación: info:eu-repo/grantAgreement/ES/MCIU/MAT2017-82669-R

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Bioquímica y Biolog.Mole. (Dpto. Bioq.Biolog.Mol. Celular)