Effect of oil extraction on properties of spent coffee ground–plastic composites

This study was aimed at evaluating the effect of oil extraction in spent coffee ground (SCG) on the properties of spent coffee ground–polypropylene composites. Coffee oil was removed from SCG by ultrasonication extraction. SCG and extracted spent coffee ground (ESCG) were used to reinforce the polyp...

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Bibliographic Details
Published in:Journal of materials science 2016-11, Vol.51 (22), p.10205-10214
Main Authors: Wu, Haijie, Hu, Wei, Zhang, Yunyun, Huang, Langhuan, Zhang, Jingxian, Tan, Shaozao, Cai, Xiang, Liao, Xiaoyan
Format: Article
Language:English
Subjects:
Accelerated aging tests
Accelerated tests
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Coffee
Crystallography and Scattering Methods
Extraction
Grounds
Materials Science
Mechanical properties
Moisture
Moisture absorption
Morphology
Original Paper
Polymer matrix composites
Polymer Sciences
Polypropylene
Polypropylenes
Solid Mechanics
Thermal properties
Thermodynamic properties
Water resistance
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Summary:This study was aimed at evaluating the effect of oil extraction in spent coffee ground (SCG) on the properties of spent coffee ground–polypropylene composites. Coffee oil was removed from SCG by ultrasonication extraction. SCG and extracted spent coffee ground (ESCG) were used to reinforce the polypropylene (PP) in this research. Moisture uptakes, morphologies, mechanical properties, thermal properties, and accelerated aging test of composites were examined as a function of oil extraction. The results suggested that the extraction of coffee oil improved the water resistance of composites. The mechanical properties of spent coffee grounds–polypropylene composites (SCGPCs) were improved significantly after oil extraction, which suggested that the oil extraction was helpful to improve the interfacial adhesion and compatibility between filler and PP matrix. The moisture absorption of SCGPC showed a dramatic decrement after oil extraction. The results also revealed that the oil extraction improved the thermal property of composite.
ISSN:0022-2461
1573-4803
DOI:10.1007/s10853-016-0248-2