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Hot-melt adhesives based on co-polyamide and multiwalled carbon nanotubes
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Latko-Durałek, Paulina, Macutkevic, Jan, Kay, Christopher James, Boczkowska, Anna and McNally, Tony (2018) Hot-melt adhesives based on co-polyamide and multiwalled carbon nanotubes. Journal of Applied Polymer Science, 135 (11). 45999. doi:10.1002/app.45999 ISSN 0021-8995.
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WRAP-hot-melt-adhesives-co-polyamide-carbon-nanotubes-McNally-2017.pdf - Accepted Version - Requires a PDF viewer. Download (2883Kb) | Preview |
Official URL: http://dx.doi.org/10.1002/app.45999
Abstract
Composites of two hot melt adhesives based on co-polyamides, one high viscosity (coPA_A), the other low viscosity (coPA_B), and multiwalled carbon nanotubes (MWCNTs) were prepared using twin-screw extrusion via dilution of masterbatches. Examination of these composites across the length scales confirmed that the MWCNTs were uniformly dispersed and distributed in the polymer matrices, although some micron size agglomerations were also observed. A rheological percolation was determined from oscillatory rheology measurements at a mass fraction of MWCNTs below 0.01 for coPA_B and, between 0.01 and 0.02 for coPA_A. Significant increases in complex viscosity and storage modulus confirmed the “pseudo-solid” like behavior of the composite materials. Electrical percolation, determined from dielectric spectroscopy was, found to be at 0.03 and 0.01 MWCNT mass fraction for coPA_A and coPA_B based composites, respectively. Addition of MWCNTs resulted in heterogeneous nucleation and altered the crystallization kinetics of both copolymers. Indirect evidence from contact angle measurements and surface energy calculations confirmed that MWCNT addition enhanced the adhesive properties of coPA_B to a level similar to coPA_A.
Item Type: | Journal Article | ||||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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Journal or Publication Title: | Journal of Applied Polymer Science | ||||||||
Publisher: | John Wiley & Sons, Inc. | ||||||||
ISSN: | 0021-8995 | ||||||||
Official Date: | 15 March 2018 | ||||||||
Dates: |
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Volume: | 135 | ||||||||
Number: | 11 | ||||||||
Article Number: | 45999 | ||||||||
DOI: | 10.1002/app.45999 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 21 November 2017 | ||||||||
Date of first compliant Open Access: | 15 November 2018 |
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