Melt processing of biodegradable cellulose nanocomposites films
Publicerad
Författare
Typ
Examensarbete för masterexamen
Program
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
With the aim of preparing sustainable materials with potential in replacing oil-based
not biodegradable plastics, melt processing of different biodegradable composites
with internal mixer, single screw extruder or twin screw extruder has been carried
out to investigate their processability. Different types of lignocellulosic materials in
biodegradable polyesters have been studied with the aim of increasing their bio-based
content, while preserving their biodegradability. Processing biocomposites together
with compatibilizers has also been study to try to improve their properties and
process ability. Manufacturing of biocomposites films was successfully performed
by compression molding, film extrusion and film blowing process. Mechanical and
thermal analyses were carried out to characterize the films properties. All properties
of the biocomposites films were compered to reference materials to assess the effect
of the intended reinforcement by using lignocellulosic materials, such as cellulose
nanocrystals and pulp, including chemically modified pulp. Moreover, dry and wet
feeding from water suspension of cellulosic materials was explored for improving the
dispersion of cellulosic reinforcement into the different biodegradable matrices.
Beskrivning
Ämne/nyckelord
Bioplastic, Biocomposite, film extrusion, film blow, cellulose nanocrystals, pulp fibre