Title:
Oxidized Sugarcane Bagasse and Coffee Husk Lignin as Compatibilizing Agent for Natural Fiber Reinforced Thermoplastic Composites
Author(s):
Oliveira, F.C., Gonçalves, A.R.
Document(s):
Paper
Abstract:
Oxidized and non-oxidized lignins were added to polypropylene/cellulose fiber reinforced composites, and the compatibilizer effect analysed by means of thermal properties. Lignin added was obtained by soda process and oxidized by hydrogen peroxide under controled conditions. The composites were prepared in a thermokinetic mixer and assessed by means of differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results showed that incorporation of cellulose fiber positivily affecteded thermal properties, independent of the presence of lignin. DSC analysis revealed that the melting temperature was slightly higher for the blends with fiber and lignin, achieving the best result employing 95% PP and 5% coffee husk cellulose (w/w). TGA results showed that the natural fiber/polypropylene interface were not improved by lignin addition, however, the lignin content in the polymer matrix without the cellulose increased the thermal stability of the polymer.
Keywords:
agricultural residues, composites, lignin, oxidation, natural fibres
Topic:
Industrial Demonstration and Business Concepts
Subtopic:
Industrial biorefineries and bio-products
Event:
21st European Biomass Conference and Exhibition
Session:
4AO.2.1
Pages:
1570 - 1577
ISBN:
978-88-89407-53-0
Paper DOI:
10.5071/21stEUBCE2013-4AO.2.1
Price:
FREE
