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The crystallinity and thermal degradation behaviour of polyamide 6/oil based mud fillers (PA6/OBMFs) nanocomposites.

Siddique, Shohel; Kwoffie, Lorraine; Addae-Afoakwa, Kofi; Yates, Kyari; Njuguna, James


Shohel Siddique

Lorraine Kwoffie

Kofi Addae-Afoakwa


The crystallinity and thermal degradation behaviours of Polyamide 6/Oil Based Mud Fillers (PA6/OBMFs) nanocomposites have been investigated using DSC and TGA. TGA indicates the onset decomposition temperature of D1/2 (half-decomposition) is 16º C higher for PA6 with 10.0 wt.% of OBMFs than that of PA6, whereas the lowest onset decomposition temperature difference among the nanocomposites and neat PA6 is 8º C for PA6 with 7.5 wt.% of OBMFs. However PA6 with 5.0 wt. % OBMFs nanocomposite has taken the longest time (1minute 36 seconds more than neat PA6) to reach D1/2. It can be deduced in this study that PA6 with 5.0 wt. % OBMFs nanocomposite provided the maximum heat resistant property whereas PA6 with 7.5 wt. % OBMFs nanocomposite showed the maximum heat absorbance property among different nanocomposites and PA6 with 10.0 wt. % exhibited the maximum thermal stability. There is a sigmoidal curve generated based on the TIF and wt% filler content value which shows three significant points at intersections of 50% TIF line which are highlighted as exfoliation (4.2 wt.%), intercalation (6.8 wt.%) and agglomeration (9.0 wt.%) points. These TIF values explained the investigated heat resistant, heat capacity and thermal stability properties of PA6/OBMFs nanocomposites illustrating the ratio of TIF and MAF is the key measure which can be considered as an effective approach to identify the nanomorphology of PA6/OBMFs nanocomposites.


SIDDIQUE, S., KWOFFIE, L., ADDAE-AFOAKWA, K., YATES, K. and NJUGUNA, J. 2019. The crystallinity and thermal degradation behaviour of polyamide 6/oil based mud fillers (PA6/OBMFs) nanocomposites. Polymer degradation and stability [online], 159, pages 139-152. Available from:

Journal Article Type Article
Acceptance Date Nov 5, 2018
Online Publication Date Nov 10, 2018
Publication Date Jan 31, 2019
Deposit Date Nov 9, 2018
Publicly Available Date Nov 11, 2019
Journal Polymer degradation and stability
Print ISSN 0141-3910
Electronic ISSN 1873-2321
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 159
Pages 139-152
Keywords Polyamide 6; Nanocomposite; Thermal degradation; Crystallinity; Rigid amorphous fraction; Mobile amorphous fraction
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