Journal
POLYMER ENGINEERING AND SCIENCE
Volume 63, Issue 6, Pages 1752-1760Publisher
WILEY
DOI: 10.1002/pen.26321
Keywords
cellulose nanocrystals; injection molding; life cycle assessment; maleic anhydride; polyhydroxybutyrate
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The study focuses on preparing cellulose nanocrystals (CNCs) reinforced composites using polyhydroxybutyrate (PHB) and polypropylene (PP). The effects of CNCs content and the addition of maleic anhydride (MA) on the mechanical and morphological properties were studied. The biodegradability of the composites was also investigated. The results showed that the environmental impacts of composites containing PHB are higher than those of PP.
The present work focuses on the preparation of cellulose nanocrystals (CNCs) reinforced composites based on polyhydroxybutyrate (PHB) and polypropylene (PP). The effects of the CNCs content as reinforcement and the addition of maleic anhydride (MA) as a coupling agent on the mechanical and morphological properties of the composites were studied. In addition, the biodegradability of the composites was investigated. Samples were prepared using PP and PHB as matrixes and CNCs as reinforcement. Test samples were prepared using the injection molding machine. The studied parameters were microscopic analysis and tensile strength measurement. Tensile strength increased with increasing CNC, but it decreased slightly when 5 wt% of CNC was added. Tensile strength decreased with the addition of MA. Environmental impacts from the production of 100 g of PP and PHB were evaluated using the life cycle assessment (LCA) approach. The results showed that the environmental impacts of composites containing PHB biopolymer are higher than PP ones.
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