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Melt-spun polylactic acid fibers: Effect of cellulose nanowhiskers on processing and properties
CSIR, Materials Science and Manufacturing, Polymers and Composites, Port Elizabeth.
CSIR, Materials Science and Manufacturing, Polymers and Composites, Port Elizabeth.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0003-4762-2854
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0001-8909-3554
2013 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 127, no 1, p. 274-281Article in journal (Refereed) Published
Abstract [en]

Bio-based continuous fibers were processed from polylactic acid (PLA) and cellulose nanowhiskers (CNWs) by melt spinning. Melt compounding of master batches of PLA with 10 wt % CNWs and pure PLA was carried out using a twin-screw extruder in which compounded pellets containing 1 and 3 wt % of CNWs were generated for subsequent melt spinning. The microscopy studies showed that the fiber diameters were in the range of 90-95 µm, and an increased surface roughness and aggregations in the fibers containing CNWs could be detected. The addition of the CNWs restricted the drawability of the fibers to a factor of 2 and did not affect the fiber stiffness or strength, but resulted in a significantly lower strain and slightly increased crystallinity. Furthermore, CNWs increased the thermal stability, creep resistance and reduction in thermal shrinkage of PLA fibers, possibly indicating a restriction of the polymer chain mobility due to the nanoscale additives.

Place, publisher, year, edition, pages
2013. Vol. 127, no 1, p. 274-281
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-7730DOI: 10.1002/app.37884ISI: 000309594400035Scopus ID: 2-s2.0-85027949491Local ID: 625a18eb-89e9-4d5f-b23d-e432315a60aaOAI: oai:DiVA.org:ltu-7730DiVA, id: diva2:980620
Note
Validerad; 2013; 20120507 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Oksman, KristiinaMathew, Aji P.

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