engleski

Nanobicomposites reinforced with Spanish broom (Spartium junceum L.) fibres

Tensile strength of natural fibres used as reinforcement in biocomposite material and treated with microwaves show approximately 60 % higher strength compared to conventional treated fibres and 30 % compared to novel osmotic degumming method. Functionalization of fibres was carried out using montmorillonite (MMT) nanoclay particles and citric acid (CA) as an environmentally friendly crosslinker. Effectiveness of the conducted modifications was examined according to the relevant standardized methods used in current industrial and manufacturing processes (testing of morphological, mechanical, chemical and thermal properties of the final composite material). MMT/CA modified fibres show better thermal stability in comparison to the reference fibre (MWR) which is proved by thermogravimetric analysis. Fibre/polymer interface was also positively influenced by MMT/CA fibre modification. Biodegradability of developed composite materials was examined with serine endopeptidase. Concentration of 50 wt.% enzyme reveals very positive result of composite degradation. Additionally, the possibility of residue stem utilization in bioenergy production was investigated. Proximate and ultimate analysis of residues after MW maceration showed increase in content of positive biomass quality indicators.

Spartium junceum L., PLA, sustainability, green composites, nanoparticles, flame retardant, biodegradation, bioenergy, solid biofuel

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