Title
Control of lignin epoxydation by reaction calorimetry
Authors
VALENTINA IORDAN (CONSTANTIN) THEODOR MALUTAN and CORINA MALUTAN

Received January 18, 2018
Published Volume 52 Issue 9-10 October-December
Keywords lignin, epoxydation, reaction calorimetry, heat dissolution, specific heat

Abstract
Lignin is characterized by insolubility in most simple solvents. The solubility of lignin preparations also depends on the method used to isolate them. Since most of the applications in which lignin is subjected to chemical reactions involve the dissolution of lignin, it is very important to know the thermodynamic properties of these solutions, as well as the characterization of chemical reactions.
Chemical modification of lignin through the epoxydation reaction and knowledge of the thermodynamic properties using reaction calorimetry are ways to develop a new application field for lignin. The paper presents the thermodynamic data obtained by reaction calorimetry for the epoxydation reaction of two commercial lignins (wheat straw-L1 and PROTOBIND 1000) in the temperature range between 30 °C and 70 °C.