Fully renewable photocrosslinkable polycarbonates from cellulose-derived monomers. Issue 7 (17th March 2022)

• Record Type: Journal Article
• Authors: Fadlallah, Sami; Kayishaer, Aihemaiti; Annatelli, Mattia; Mouterde, Louis M. M.; Peru, Aurélien A. M.; Aricò, Fabio; Allais, Florent
• Is Part Of: Green chemistry. Volume 24:Issue 7(2022)
• Page Start: 2871
• Page End: 2881
• Publication Date: 2022-03-17
• Subjects: Environmental chemistry -- Industrial applications -- Periodicals; Environmental management -- Periodicals; 660
• DOI: 10.1039/d1gc04755h
• Languages: English
• ISSNs: 1463-9262

Abstract

Abstract : Cellulose-derived photocrosslinkable polycarbonates with renewable citronellol pendant chains were synthesised via polycondensation of Triol-citro, a levoglucosenone-based triol monomer, and dimethoxycarbonyl isosorbide. Abstract : Cellulose-derived photocrosslinkable polycarbonates (PCs) with renewable citronellol pendant chains were synthesised through the polycondensation of Triol-citro, a recently developed levoglucosenone-based triol monomer, and dimethoxycarbonyl isosorbide. The polymer structures were unveiled through NMR spectroscopy and four repeating units were identified: three hydroxy-functional linear units ( L n, L o and L p ) and one dendritic unit ( D q ). The relative percentages of the repeating units, as well as the molecular weights of the corresponding polymers, can be finely tuned by varying the catalyst and reaction conditions ( i.e., polycondensation temperature and monomer concentration). Thermal analyses demonstrated that the novel PCs exhibited low glass transition temperatures ( T g as low as −72 °C) and T d5% up to 159 °C. These hydroxy-functionalised PCs are not only fully biobased with a controlled extent of branching, but they also bear citronellol side chains that were successfully crosslinked via ultraviolet irradiation to further control the polymer properties.