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Mechanical and thermal behaviour of bamboo flour-reinforced XLPE composites

Haddou, Geoffrey and Dandurand, Jany and Dantras, Eric and Maiduc, Huynh and Thai, Hoang and Giang, Nguyen Vu and Trung, Tran Huu and Ponteins, Philippe and Lacabanne, Colette Mechanical and thermal behaviour of bamboo flour-reinforced XLPE composites. (2016) Journal of Thermal Analysis and Calorimetry, 124 (2). 701-708. ISSN 1388-6150

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Official URL: http://dx.doi.org/10.1007/s10973-015-5176-x

Abstract

In the present work, the influence of natural fillers (bamboo flour/BF) on crosslinked polyethylene (XLPE) has been discussed. The main difficulty for the preparation of the composites is to establish adhesion between hydrophilic natural fillers and hydrophobic matrix. Consequently, coupling agent (CA) as silane must be added to promote interface. In this work, different amounts of tetraethyl orthosilicate (TEOS) were used as coupling agent and SEM images allow us to control the quality of the interface. Differential scanning calorimetry (DSC) shows that the XLPE crystallinity is unmodified upon the introduction of BF. The absence of transcrystallinity is important for preserving the ductility of composites. The dynamic mechanical analyses (DMA) highlight an optimum of shear modulus for a TEOS content of 5 mass% (CA5). Above this amount, the mechanical properties are reduced. These results were confirmed by the SEM observations which highlighted the decrease in the interface between the XLPE and BF. Furthermore, neither the introduction of BF nor the treatment with TEOS exerts an influence on the relaxation temperature: there is no plasticization. The combination of DSC/DMA allows us to show that higher viscoelasticity favouring impact strength is observed in XLPE/BF CA5 composites.

Item Type:Article
Additional Information:Thanks to Springer editor. The definitive version is available at http://link.springer.com/ The original PDF of the article can be found at Journal of Thermal Analysis and Calorimetry website : http://link.springer.com/journal/10973
HAL Id:hal-01486588
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Vietnam Academy of Science and Technology - VAST (VIETNAM)
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Deposited By: cirimat webmestre
Deposited On:10 Mar 2017 09:22

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