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Compounding and rheometry of PLA nanocomposites with coated and uncoated hydroxyapatite nanoplatelets

Tomczynska, Magdalena M.; Choong, Gabriel Y.H.; De Focatiis, Davide S.A.; Grant, David M.; Parsons, Andrew J.

Authors

Magdalena M. Tomczynska Magdalena.Tomczynska@nottingham.ac.uk

Gabriel Y.H. Choong ezzgc@exmail.nottingham.ac.uk

Davide S.A. De Focatiis enzddf@exmail.nottingham.ac.uk

David M. Grant Emzdg@exmail.nottingham.ac.uk

Andrew J. Parsons bbzajp@exmail.nottingham.ac.uk



Abstract

Polylactic acid and novel nanoplatelets of hydroxyapatite (HANP) were compounded in a laboratory scale twin-screw extruder and injection moulded to shape. The effect of HANP loading content, between 1 wt% and 10 wt%, and of HANP surface coating with tailored molecular dispersants, on the processability and rheological behaviour were investigated. Dispersion of HANP within the matrix system was determined qualitatively using transmission electron micrographs. Surface coating of HANP with dispersants was observed to change the state of HANP dispersion in the nanocomposites. This was also reflected in the changes of the nanocomposites’ rheological response with the moduli of coated HANP systems increasing at lower frequencies.

Citation

Tomczynska, M. M., Choong, G. Y., De Focatiis, D. S., Grant, D. M., & Parsons, A. J. (in press). Compounding and rheometry of PLA nanocomposites with coated and uncoated hydroxyapatite nanoplatelets

Conference Name The Polymer Processing Society Conference 2015
End Date Sep 25, 2015
Acceptance Date Nov 21, 2015
Online Publication Date Oct 31, 2016
Deposit Date Dec 6, 2016
Publicly Available Date Dec 6, 2016
Peer Reviewed Peer Reviewed
Keywords Polylactic acid, melt processing, nanocomposites, hydroxyapatite, oscillatory shear rheology, TEM
Public URL http://eprints.nottingham.ac.uk/id/eprint/39149
Publisher URL http://dx.doi.org/10.1063/1.4965480
Related Public URLs http://dx.doi.org/10.17639/nott.14
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
Additional Information This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in AIP Conf. Proc. 1779, 030010 (2016) and may be found at http://dx.doi.org/10.1063/1.4965480

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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