Biobased Alkyd Resins from Plant Oil and Furan-2,5-dicarboxylic Acid
Jan Janesch, Markus Bacher, Sidhant Satya Prakash Padhi, Thomas Rosenau, Wolfgang Gindl‐Altmutter, Christian Hansmann
Abstract
High Resolution Image Download MS PowerPoint Slide In the current search for renewable polymer coatings, alkyd resins are attracting renewed interest because of their inherently high content of biobased constituents. Herein, we propose a novel approach for the preparation of renewable alkyd resins, prepared from vegetable triglycerides, glycerol, and furan-2,5-dicarboxylic acid dimethyl ester (FDME). Several alkyd resins with varying contents of FDME were synthesized, and their properties were thoroughly studied. The successful transesterification between FDME and glycerol was supported by nuclear magnetic resonance (NMR) and Fourier transform infrared spectroscopy (FT-IR). Increasing the contents of FDME yielded resins with higher molecular weight and increased viscosity, as determined by gel permeation chromatography and rheology. Resins of higher molecular weight successfully cross-linked to a solid film when coated onto glass slides. Glass-transition temperatures of the prepared coating, obtained by DSC measurements, were around 0 °C. This is the first scientific study that investigates FDME as a substitute for phthalic anhydride in alkyd resin preparations.