A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites
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 inv...
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| Format: | Article |
| Language: | English |
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John Wiley and Sons Inc
2022
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| Online Access: | http://umpir.ump.edu.my/id/eprint/33348/1/A%20cleaner%20processing%20approach%20for%20cellulose%20reinforced%20thermoplastic%20polyurethane%20nanocomposites.pdf |
| _version_ | 1796994952907980800 |
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| author | Khairatun Najwa, Mohd Amin Chaleat, Celine Edwards, Grant Martin, Darren J. Pratheep Kumar, Annamalai |
| author_facet | Khairatun Najwa, Mohd Amin Chaleat, Celine Edwards, Grant Martin, Darren J. Pratheep Kumar, Annamalai |
| author_sort | Khairatun Najwa, Mohd Amin |
| collection | UMP |
| description | 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. |
| first_indexed | 2024-03-06T12:55:10Z |
| format | Article |
| id | UMPir33348 |
| institution | Universiti Malaysia Pahang |
| language | English |
| last_indexed | 2024-03-06T12:55:10Z |
| publishDate | 2022 |
| publisher | John Wiley and Sons Inc |
| record_format | dspace |
| spelling | UMPir333482022-07-22T07:47:46Z http://umpir.ump.edu.my/id/eprint/33348/ A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites Khairatun Najwa, Mohd Amin Chaleat, Celine Edwards, Grant Martin, Darren J. Pratheep Kumar, Annamalai TP Chemical technology 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. John Wiley and Sons Inc 2022 Article PeerReviewed pdf en cc_by_nc_4 http://umpir.ump.edu.my/id/eprint/33348/1/A%20cleaner%20processing%20approach%20for%20cellulose%20reinforced%20thermoplastic%20polyurethane%20nanocomposites.pdf 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) https://doi.org/10.1002/pen.25899 https://doi.org/10.1002/pen.25899 |
| spellingShingle | TP Chemical technology Khairatun Najwa, Mohd Amin Chaleat, Celine Edwards, Grant Martin, Darren J. Pratheep Kumar, Annamalai A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title | A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title_full | A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title_fullStr | A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title_full_unstemmed | A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title_short | A cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| title_sort | cleaner processing approach for cellulose reinforced thermoplastic polyurethane nanocomposites |
| topic | TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/33348/1/A%20cleaner%20processing%20approach%20for%20cellulose%20reinforced%20thermoplastic%20polyurethane%20nanocomposites.pdf |
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