pps proceeding - Abstract Preview
pps proceeding
Symposium: S14 - Special: Recycling and Sustainable Polymers
Oral Presentation
 
 

Synthesis of high temperature biocarbon: morphology, electrical and thermal properties

Rodriguez-Uribe Arturo (1)*, MOHANTY Amar K. (1), Misra Manjusri (2)

(1) University of Guelph, Bioproducts Discovery & Development Centre - Ontario - Canada, (2) University of Guelph, School of Engineering - ON - Canada

Biocarbon produced from different biomass sources and temperatures present differing surface chemistry and morphology. It was found that biocarbon produced at lower temperature retains functionality while those produced at high temperature are primarily devoid of functionality, though presence of oxygen is still detected. As well, the electrical conductivity of biocarbon varies from poor to high as temperature is increased. The 600℃ based biocarbon had an electrical conductivity of (1x10-3 S/m), while biocarbon prepared at 1000℃ showed values on the order of 100 S/m. One of the main properties of biomass derived biocarbon that effects the conductivity is the amount of ash present with higher content inhibiting performance. In consequence, the electrical conductivity can be greatly improved in composites manufactured with low ash-high temperature produced biocarbons. However, ash can be fragmented more easily compared to pure carbon resulting in significantly lower particle size which improves impact properties when biocarbon is incorporated in biocomposites. This high ash content present in some types of biocarbon (distillers grains, shrimp/crab shell biocarbons with up to 60% ash) still tend to maintain mechanical performance. This presentation is intended to give a general perspective of biocarbons properties and potential industrial applications. Acknowledgements The financial support from Ontario Research Fund, Research Excellence Program; Round-7 (ORF-RE07) from the Ontario Ministry of Research, Innovation and Science (MRIS) (Project # 052644, 052665); the Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA)/University of Guelph - Bioeconomy for Industrial Uses Research Program (Project # 030332); and the Natural Sciences and Engineering Research Council (NSERC), Canada Discovery Grants (Project # 401111 and 400320) to carry out this research is gratefully acknowledged.