Affiliation:
1. ACIB GmbH Konrad-Lorenz-Strasse 20 3430 Tulln an der Donau Austria
2. University of Natural Resources and Life Sciences Vienna Department of Agrobiotechnology IFA-Tulln Institute of Environmental Biotechnology Konrad-Lorenz-Strasse 20 3430 Tulln an der Donau Austria
3. URD Agro-Biotechnologies Industrielles (ABI) CEBB AgroParisTech Pomacle 51110 France
4. University of Genova Department of Chemistry and Industrial Chemistry via Dodecaneso 31 16146 Genova GE Italy
Abstract
AbstractRegioselective enzymatic polycondensation of the bio–based cellulose derived polyol, Triol–citro, and dimethyl adipate using Candida antarctica Lipase B (CaLB) was investigated. A Design of Experiment approach with MODDE® Pro 13 was used to determine important factors in the branching behavior of this polymer, and reactant ratio, temperature, reaction time and enzyme wt % were the studied factors. Multifunctional polyesters with pendant hydroxy groups were synthesized and fully characterized using 2D NMR techniques to determine degree of branching. Branching was minimal, with a maximum of 16 % observed, and monomer ratio, temperature and reaction time were all determined to be significant factors. In this work, Mn of up to 13 kDa were achieved, while maintaining degree of branching below 15 %, resulting in a linear polyester with the potential to be further functionalized.