The depolymerization of end-of-life polymers to valued chemicals (waste-to-chemicals) can be a suitable tool for the transformation from linear circular economy. Therefore, poly(ethylene 2,5-furandicarboxylate), discussed as sustainable substitute terephthalate), was studied. In more detail, in presence catalytic amounts zinc(II) acetate 2,5-furandicarboxylate) converted by methanolysis dimethy...

The chemical recycling of poly(ϵ-caprolactone) (PCL) was explored based on depolymerization and polymerization. concept bases the zinc-catalyzed via methanolysis to produce methyl 6-hydroxyhexanoate, which is polymerized in a condensation reaction generate new PCL close cycle. In more detail, with zinc(II) acetate as catalyst, depolymerized turnover frequencies up 468 h−1 using microwave heatin...

We have developed multiblock aromatic/aliphatic condensation polymers, comprising side-chain biofunctionalized aliphatic oligocarbonates and biobased aromatic ester triad mesogens up to 17 wt %. Nanosegregation of the mesogen-rich domains with diameters approximately 10 nm from soft polymer matrix is suggested by atomic force microscopy. The polymers exhibit rubberlike properties, unlike corres...

The stereoselective synthesis of (1S,2S,5R)-5-((4-methoxybenzyl)oxy)-2-methyl-8-methylene-1,2,4a,5,6,7,8,8a-octahy-dronaphthalene-1-carboxylic acid (2) is described, which comprises the bicyclic core structure natural product amycolamicin (1). ring-system was established via an intramolecular Diels-Alder reaction a triene carrying SuperQuat chiral auxiliary. latter could be readily removed by m...

The present study has been focused on the acid and base transesterification of animal fats (dairy cow and beef) to produce biodiesel by varying process parameters such as catalyst amount, catalyst nature, reaction time and temperature. The maximum biodiesel yield after acid catalysis was 94.1 ± 2.43 and 98.4 ± 2.3 percent for dairy cow and beef t...