A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites

Khairatun Najwa, Mohd Amin and Chaleat, Celine and Edwards, Grant and Martin, Darren J. and Pratheep Kumar, Annamalai (2022) A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites. Polymer Engineering and Science, 62 (3). 949 -961. ISSN 0032-3888. (Published)

A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites.pdf
Available under License Creative Commons Attribution Non-commercial.

Download (3MB) | Preview


In a manner of addressing challenges in scalable processing of thermoplastic polyurethane (TPU) nanocomposites through extrusion methods, this study reports a very clean processing approach of incorporating cellulose nanocrystal (CNC) into a TPU matrix, with no acid or organic-solvents usage. It involves a mechanical deconstruction of microcrystalline cellulose (MCC) into nanoscale particles in water and polyol through scalable bead-milling, vacuum drying, and followed by twin-screw reactive extrusion with isocyanate and chain extender. The thermal stability of CNC was higher than that of typically acid-hydrolyzed CNC and suitable for processing with the precursors of TPU at typical processing temperature range (175–190°C). The CNC incorporation at very low loadings (0.5, 0.8 wt%) through this methodology resulted in substantial enhancements in tensile properties (for example, up to 28% in strength and toughness) without any significant stiffening effect. Moreover, the nanocomposites retained elastic properties, including elongation at break (%), resilience, and creep resistance. Their chemical properties and thermal transitions were also found to support the retained thermoplastic behavior while improving mechanical performance.

Item Type: Article
Additional Information: Indexed by Scopus
Uncontrolled Keywords: A: thermoplastics; Extrusion method; Mechanical; Micro-crystalline cellulose; Nanoscale particles; Polyurethane matrix; Processing approach; Reinforced thermoplastics; Thermoplastic polyurethane nanocomposites; Thermoplastic polyurethanes
Subjects: T Technology > TP Chemical technology
Faculty/Division: Faculty of Chemical and Process Engineering Technology
Institute of Postgraduate Studies
Depositing User: Mr Muhamad Firdaus Janih@Jaini
Date Deposited: 22 Jul 2022 07:47
Last Modified: 22 Jul 2022 07:47
URI: http://umpir.ump.edu.my/id/eprint/33348
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item