New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker
New waterborne polyurethane (WPU)-based nanocomposites were prepared by incorporating low loading levels of chitin whiskers (ChWs) as the nanophase. The resultant WPU/ChW nanocomposites exhibited prominent enhancement in both strength and Young's modulus, and maintained an elongation of greater...
| Format: | Article |
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| Language: | English |
| Published: |
Budapest University of Technology
2011-04-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0001959&mi=cd |
| _version_ | 1819044223799787520 |
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| collection | DOAJ |
| description | New waterborne polyurethane (WPU)-based nanocomposites were prepared by incorporating low loading levels of chitin whiskers (ChWs) as the nanophase. The resultant WPU/ChW nanocomposites exhibited prominent enhancement in both strength and Young's modulus, and maintained an elongation of greater than ca. 500%. The ChW loading level of 3 wt% showed the maximum tensile strength (28.8 MPa) and enhanced Young's modulus (6.5 MPa), ca.1.8- and 2.2-fold over those of neat WPU. The active surface and rigidity of ChW facilitated formation of the interface for stress transferring and contributed to higher stress-endurance. As the ChW loading level increased, self-aggregation of ChWs resulted in a decrease in strength; however, the rigidity of ChW still supported the increase in Young's modulus, and the nanocompositescontaining 5 wt% ChWs had the highest Young's modulus (9.6 MPa). This work enriches the research into achieving high mechanical performance of waterborne polyurethane-based nanocomposites by introducing a natural nanofiller, and this high performance 'green' bionanocomposites will likely have promising prospects. |
| first_indexed | 2024-12-21T10:09:16Z |
| format | Article |
| id | doaj.art-45b3ae11d0ea43dfb07df7156cfebda6 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-21T10:09:16Z |
| publishDate | 2011-04-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-45b3ae11d0ea43dfb07df7156cfebda62022-12-21T19:07:45ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2011-04-015436237310.3144/expresspolymlett.2011.35New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whiskerNew waterborne polyurethane (WPU)-based nanocomposites were prepared by incorporating low loading levels of chitin whiskers (ChWs) as the nanophase. The resultant WPU/ChW nanocomposites exhibited prominent enhancement in both strength and Young's modulus, and maintained an elongation of greater than ca. 500%. The ChW loading level of 3 wt% showed the maximum tensile strength (28.8 MPa) and enhanced Young's modulus (6.5 MPa), ca.1.8- and 2.2-fold over those of neat WPU. The active surface and rigidity of ChW facilitated formation of the interface for stress transferring and contributed to higher stress-endurance. As the ChW loading level increased, self-aggregation of ChWs resulted in a decrease in strength; however, the rigidity of ChW still supported the increase in Young's modulus, and the nanocompositescontaining 5 wt% ChWs had the highest Young's modulus (9.6 MPa). This work enriches the research into achieving high mechanical performance of waterborne polyurethane-based nanocomposites by introducing a natural nanofiller, and this high performance 'green' bionanocomposites will likely have promising prospects.http://www.expresspolymlett.com/letolt.php?file=EPL-0001959&mi=cdNanocompositesWaterborne polyurethaneChitin whisker |
| spellingShingle | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker eXPRESS Polymer Letters Nanocomposites Waterborne polyurethane Chitin whisker |
| title | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker |
| title_full | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker |
| title_fullStr | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker |
| title_full_unstemmed | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker |
| title_short | New waterborne polyurethane-based nanocomposites reinforced with low loading levels of chitin whisker |
| title_sort | new waterborne polyurethane based nanocomposites reinforced with low loading levels of chitin whisker |
| topic | Nanocomposites Waterborne polyurethane Chitin whisker |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0001959&mi=cd |