Effect of cellulose nanowhiskers on surface morphology, mechanical properties, and cell adhesion of melt-drawn polylactic acid fibers

Hossain, Kazi M. Zakir, Hasan, Muhammad S., Boyd, Daniel, Rudd, Chris D., Ahmed, Ifty, and Thielemans, Wim (2014) Effect of cellulose nanowhiskers on surface morphology, mechanical properties, and cell adhesion of melt-drawn polylactic acid fibers. Biomacromolecules, 15 (4). pp. 1498-1506.

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Abstract

Polylactic acid (PLA) fibers were produced with an average diameter of 11.2 (+/- 0.9) μm via a melt-drawing process. The surface of the PLA fibers was coated with blends of cellulose nanowhiskers (CNINs) (65 to 95 wt %) and polyvinyl acetate (PVAc). The CNWs bound to the smooth PLA fiber surface imparted roughness, with the degree of roughness depending on the coating blend used. The fiber tensile modulus increased 45% to 7 GPa after coating with 75 wt % CNINs compared with the uncoated PLA fibers, and a significant increase in the fiber moisture absorption properties at different humidity levels was also determined. Cytocompatibility studies using NIH-3T3 mouse fibroblast cells cultured onto CNWs-coated PLA surface revealed improved cell adhesion compared with the PLA control, making this CNW surface treatment applicable for biomedical and tissue engineering applications. Initial studies also showed complete cell coverage within 2 days.

Item ID: 58001
Item Type: Article (Research - C1)
ISSN: 1526-4602
Keywords: coating materials, fibers, plastics, biopolymers, organic polymers
Copyright Information: Copyright © 2014 American Chemical Society.
Funders: University of Nottingham Scholarship (UK), Engineering and Physical Sciences Research Council (EPSRC)
Projects and Grants: EPSRC Grant EP/J015687/1.
Date Deposited: 17 Apr 2019 09:23
FoR Codes: 09 ENGINEERING > 0912 Materials Engineering > 091202 Composite and Hybrid Materials @ 100%
SEO Codes: 88 TRANSPORT > 8803 Aerospace Transport > 880399 Aerospace Transport not elsewhere classified @ 0%
86 MANUFACTURING > 8606 Industrial Chemicals and Related Products > 860607 Plastic Products (incl. Construction Materials) @ 100%
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