Water-assisted melt processing of cellulose biocomposites with poly(ε-caprolactone) or poly(ethylene-acrylic acid) for the production of carton screw caps
Artikel i vetenskaplig tidskrift, 2021

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.

manufacturing

composites

cellulose and other wood products

mechanical properties

thermoplastics

Författare

Abhijit Venkatesh

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Lilian Forsgren

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Angelica Avella

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Karl Banke

Polykemi AB

Jan Wahlberg

Tetra Pak

Fabiola Vilaseca

Universitat de Girona

Giada Lo Re

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Antal Boldizar

Chalmers, Industri- och materialvetenskap, Konstruktionsmaterial

Journal of Applied Polymer Science

0021-8995 (ISSN) 1097-4628 (eISSN)

Vol. In Press

Ämneskategorier

Polymerkemi

Pappers-, massa- och fiberteknik

Polymerteknologi

DOI

10.1002/app.51615

Mer information

Senast uppdaterat

2021-09-17