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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/6246

Title: Melt-spun polylactic acid fibers: effect of cellulose nanowhiskers on processing and properties
Authors: John, MJ
Anandjiwala, R
Oksman, K
Mathew, AP
Keywords: Melt spinning
Polylactic acid
Cellulose nanowhiskers
Thermal properties
Shrinkage
Polylactic acid fibers
PLA
Issue Date: Apr-2012
Publisher: Wiley
Citation: John, MJ, Anandjiwala, R, Oksman, K and Mathew, AP. 2012. Melt-spun polylactic acid fibers: effect of cellulose nanowhiskers on processing and properties. Journal of Applied Polymer Science, vol. 127(1), pp 274-281
Series/Report no.: Workflow;9557
Workflow;9678
Abstract: 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 mm, 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.
Description: Copyright: 2012 Wiley. This is the pre print version of the work. The definitive version is published in the Journal of Applied Polymer Science, vol. 127(1), pp 274-281
URI: http://onlinelibrary.wiley.com/doi/10.1002/app.37884/pdf
http://hdl.handle.net/10204/6246
ISSN: 0021-8995
Appears in Collections:General science, engineering & technology

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