Working Paper Article Version 1 This version is not peer-reviewed

Cellulosic Waste Deriving Filler Content Effect on Biodegradation Behavior and Thermal Properties for HDPE and PLA Composites

Version 1 : Received: 1 August 2019 / Approved: 5 August 2019 / Online: 5 August 2019 (04:29:57 CEST)

How to cite: Quitadamo, A.; Massardier, V.; Iovine, V.; Belhadj, A.; Bayard, R.; Valente, M. Cellulosic Waste Deriving Filler Content Effect on Biodegradation Behavior and Thermal Properties for HDPE and PLA Composites. Preprints 2019, 2019080041 Quitadamo, A.; Massardier, V.; Iovine, V.; Belhadj, A.; Bayard, R.; Valente, M. Cellulosic Waste Deriving Filler Content Effect on Biodegradation Behavior and Thermal Properties for HDPE and PLA Composites. Preprints 2019, 2019080041

Abstract

Composites with HDPE and PLA matrix have been tested to analyse the effect of natural fillers (wood flour, recycled waste paper and a mix of both fillers) and temperature on polymer degradation. Composting tests have been performed in both mesophilic (35°C) and thermophilic (58°C) conditions. Degradation development has been evaluated through mass variation, TGA and DSC. HDPE, as expected, did not display any relevant variation, confirming its stability under our composting conditions. PLA is sensibly influenced by temperature and humidity, with higher reduction of Mw when composting is performed at 58°C. Natural fillers seem to influence degradation process of composites, already at 35°C. In fact, degradation of fillers at 35°C allows a mass reduction during composting of composites, while neat PLA do not display any variation.

Subject Areas

biodegradation; bio-derived polymer; composites

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