The influence of melt mixing on the stability of cellulose acetate and its carbon nanotube composites
-
Ana Delgado-Lima
,
Maria C. Paiva
Abstract
Cellulose derivatives, such as cellulose acetate (CA), are commonly used due to their ease of processing. These polymers present interesting mechanical properties and biodegradability, but low thermal stability under melt processing conditions. Composites of carbon nanotubes (CNTs) and cellulose derivatives are expected to present enhanced properties, depending on the effect of nanotubes on polymer structure and thermal properties. This work aims to investigate the influence of melt mixing on the stability of CA and its CNT composites. Composites with 0 wt%, 0.1 wt% and 0.5 wt% CNTs, as received and functionalized with pyrrolidine groups, were prepared using a batch mixer and an extruder. Chain scission of CA occurred during processing, but the effect was considerably reduced in the presence of CNTs. The incorporation of small amounts of CNTs (with or without functionalization) decreased polymer degradation by thermomechanical effects induced during polymer processing.
Acknowledgments
The authors acknowledge the Portuguese Foundation for Science and Technology (SFRH/BD/81711/2011) and n-STeP – Nanostructured systems for Tailored Properties, with reference NORTE-07-0124-FEDER-000039, supported by the Programa Operacional Regional do Norte (ON.2).
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and characterization of graphene oxide/PMMA nanocomposites with amino-terminated vinyl polydimethylsiloxane phase interfaces
- Effect of exfoliated graphite nanoplatelets on thermal and heat deflection properties of kenaf polypropylene hybrid nanocomposites
- Synthesis of spherical porous cross-linked glutaraldehyde/poly(vinyl alcohol) hydrogels
- Influence of process parameters on property of PP/EPDM blends prepared by a novel vane extruder
- Influence of processing conditions on heat sealing behavior and resultant heat seal strength for peelable heat sealing of multilayered polyethylene films
- Thermal degradation kinetics and lifetime of HDPE/PLLA/pro-oxidant blends
- Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites
- The influence of melt mixing on the stability of cellulose acetate and its carbon nanotube composites
- Experimental analysis of resin infusion in air cushion method
- 3D-MID manufacturing via laser direct structuring with nanosecond laser pulses
Artikel in diesem Heft
- Frontmatter
- Original articles
- Preparation and characterization of graphene oxide/PMMA nanocomposites with amino-terminated vinyl polydimethylsiloxane phase interfaces
- Effect of exfoliated graphite nanoplatelets on thermal and heat deflection properties of kenaf polypropylene hybrid nanocomposites
- Synthesis of spherical porous cross-linked glutaraldehyde/poly(vinyl alcohol) hydrogels
- Influence of process parameters on property of PP/EPDM blends prepared by a novel vane extruder
- Influence of processing conditions on heat sealing behavior and resultant heat seal strength for peelable heat sealing of multilayered polyethylene films
- Thermal degradation kinetics and lifetime of HDPE/PLLA/pro-oxidant blends
- Effect of notch sensitivity on the mechanical properties of HA/PEEK functional gradient biocomposites
- The influence of melt mixing on the stability of cellulose acetate and its carbon nanotube composites
- Experimental analysis of resin infusion in air cushion method
- 3D-MID manufacturing via laser direct structuring with nanosecond laser pulses
