期刊
POLYMER DEGRADATION AND STABILITY
卷 97, 期 10, 页码 1979-1987出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2012.03.009
关键词
Thermal degradation; Lignin; Poly(3-hydroxybutyrate); Thermogravimetric analysis; Biocomposites
Rice husk lignin was isolated by means of acidolytic (AL) or alkaline enzymatic 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 behavior 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. (C) 2012 Elsevier Ltd. All rights reserved.
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