Rice husk lignin was isolated by means of acidolytic (AL) or alkaline enzymatic (AEL) extraction method. Biocomposites of poly(3-hydroxybutyrate) (PHB) and acetylated lignin were prepared by casting from chloroform solution. The morphological, structural and thermal characteristics of the biocomposites were extensively studied. The ligno-derivatives features, i.e. purity, chemical structure and molecular weight, influenced the thermal properties of the PHB-based biocomposites. The AL sample evidenced a marked interference on the crystallization behaviour and thermo-oxidative degradation of the PHB. The decrease of PHB crystallization rate and the increase of thermal stability were observed as a function of the lignin amount in PHB-AL biocomposite series.
Orlandi, M., Zoia, L., Bertini, F., Canetti, M., Cacciamani, A., Elegir, G. (2012). Effect of ligno-derivatives on thermal properties and degradation behaviour of poly(3-hydroxybutyrate)-based biocomposites. POLYMER DEGRADATION AND STABILITY, 97(10), 1979-1987 [10.1016/j.polymdegradstab.2012.03.009].
Effect of ligno-derivatives on thermal properties and degradation behaviour of poly(3-hydroxybutyrate)-based biocomposites
ORLANDI, MARCO EMILIO;ZOIA, LUCA;
2012
Abstract
Rice husk lignin was isolated by means of acidolytic (AL) or alkaline enzymatic (AEL) extraction method. Biocomposites of poly(3-hydroxybutyrate) (PHB) and acetylated lignin were prepared by casting from chloroform solution. The morphological, structural and thermal characteristics of the biocomposites were extensively studied. The ligno-derivatives features, i.e. purity, chemical structure and molecular weight, influenced the thermal properties of the PHB-based biocomposites. The AL sample evidenced a marked interference on the crystallization behaviour and thermo-oxidative degradation of the PHB. The decrease of PHB crystallization rate and the increase of thermal stability were observed as a function of the lignin amount in PHB-AL biocomposite series.
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