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Water-assisted extr...
Water-assisted extrusion and injection moulding of composites with surface-grafted cellulose nanocrystals – An upscaling study
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- Forsgren, Lilian, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Venkatesh, Abhijit, 1989 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rigoulet, Florian (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sjövold, Karin, 1991 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Westman, Gunnar, 1964 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Rigdahl, Mikael, 1950 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Boldizar, Antal, 1957 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- Engelska.
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Ingår i: Composites Part B: Engineering. - : Elsevier BV. - 1359-8368. ; 208
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https://doi.org/10.1...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The large-scale surface modification of cellulose nanocrystals (CNC) was carried out to produce CNC-containing composites, in a scale of 3 kg, using industrial-scale melt processing techniques such as twin-screw extrusion and injection moulding. Two different polymer matrices, ethylene-acrylic acid copolymer (EAA) and low-density polyethylene (LDPE), were reinforced with 10 wt% unmodified cellulose nanocrystals (CNC) or surface-treated CNC, where a 2-hydroxyproyl-N-diallyl group had been grafted onto the sulphate half-ester groups on the CNC surfaces. This was achieved by mixing an aqueous CNC dispersion and the polymer pellets directly in the twin-screw extruder followed by a second dry compounding step prior to shaping by injection moulding. The injection-moulded materials were characterized with respect to their mechanical properties and thermal stability. The addition of 10 wt % CNC resulted in all cases in an increase in the yield strength and stiffness by 50–100%, most significantly for the EAA based composites. There were indications of the presence of a stable interphase and a percolating network in the EAA-based materials, according to dynamic-mechanical measurements. A reduction in thermal stability was observed for the melt-processed samples containing diallyl-modified CNC and discoloration in the EAA based samples.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- Extrusion
- Injection moulding
- Cellulose nanocrystals
- Mechanical properties
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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Forsgren, Lilian ...
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Venkatesh, Abhij ...
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Rigoulet, Floria ...
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Sjövold, Karin, ...
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Westman, Gunnar, ...
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Rigdahl, Mikael, ...
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visa fler...
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Boldizar, Antal, ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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- TEKNIK OCH TEKNOLOGIER
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TEKNIK OCH TEKNO ...
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och Materialteknik
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och Kompositmaterial ...
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Composites Part ...
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Chalmers tekniska högskola