Water-assisted melt processing of cellulose biocomposites with poly(ε-caprolactone) or poly(ethylene-acrylic acid) for the production of carton screw caps
| Autor: | Jan Wahlberg, Abhijit Venkatesh, Antal Boldizar, Angelica Avella, Karl Banke, Giada Lo Re, Lilian Forsgren, Fabiola Vilaseca |
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| Rok vydání: | 2022 |
| Předmět: |
Termoplàstics -- Propietats mecàniques
business.product_category Materials science Polymers and Plastics Materials compostos Pulp (paper) General Chemistry Composite materials engineering.material Surfaces Coatings and Films Carton chemistry.chemical_compound Viscosity chemistry Rheology Compounding Materials Chemistry engineering Cellulose Composite material business Thermoplastics -- Mechanical properties Caprolactone Acrylic acid |
| Zdroj: | Journal of Applied Polymer Science, 2022, vol. 139, núm. 6, p. 51615 Articles publicats (D-EQATA) DUGiDocs – Universitat de Girona instname |
| Popis: | Composites in 25 kg batches were compounded of cellulose nanocrystals (CNC) and thermomechanical pulp (TMP) and shaped into caps at industrial facilities on a pilot-plant scale. Some of the material was also injection molded into plaques to compare the effect of laboratory-scale and pilot-scale compounding of poly(ethylene-co-acrylic acid) (EAA7) and poly(caprolactone) composites reinforced with 10 wt% CNC and TMP. The materials compounded under laboratory-scale conditions showed a different morphology, improved mechanical properties, and a higher viscosity, than the materials compounded on a pilot-scale. In some cases, the rheological properties of the melts indicated the presence of a relatively strong percolating cellulosic network, and the interphase region between the cellulose and the matrix appears to be important for the mechanical performance of the composites. After the compounding on a pilot scale, both the length and width of the pulp fibers was reduced. The TMP provided better reinforcement than the CNC possibly due to the higher aspect ratio. |
| Databáze: | OpenAIRE |
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