Enzymkatalysierte Kondensationsreaktionen in wässrigen Miniemulsionen und radikalische Polymerisationen in ionischen Flüssigkeiten ...

• Main Author: Schatzinger, Andreas
• Format: Thesis
• Language: German
• Published: Universität Ulm 2016
• Subjects: Hydrolasen; Lipoprotein-Lipase; DDC 540 / Chemistry & allied sciences; Esterification; Carbonsäureester; Enzym; Ionische Flüssigkeit; Kalorimetrie; Kondensationsreaktion; Miniemulsion; Polyester; Radikalische Polymerisation; Veresterung; Carbonic acid
• Online Access: https://dx.doi.org/10.18725/oparu-1129; https://oparu.uni-ulm.de/xmlui/handle/123456789/1156

In the present work the first results of the enzymatic esterification of aliphatic carbonic acids with primary and secondary alcohols in mini-emulsion are shown. The influence of the solubility of the alcohols and branched and therefore sterically demanding alcohols on the reaction rate and the maximum conversion of the esterification was determined. To state the efficiency of an enzyme catalyzed condensation reaction compared to an acid catalysed reaction in macro- and mini-emulsion the esterification reactions have been carried out in mini-emulsion as well as acid catalyzed and enzymatically. In addition to the esterification of carbonic acids with a primary alcohol, the attempt to synthesize a per-ester of a hydroperoxide and a carbonic acid was made. Besides the synthesis of simple esters lipases can be applied for the enzymatic synthesis of polyesters in aqueous mini-emulsions. Therefore lactones were used as monomers. For the first time the enzymatic reaction of e-caprolactone to poly((e-caprolactone) ...