Impact of corona treated hemp fibres onto mechanical properties of polypropylene composites made thereof

By M. Ragoubi, D. Bienaimé, S. Molina, B. George, A. Merlin. 2010

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Targeted pre-treatment of hemp bast fibres for optimal performance in biocomposite materials: A review (2017, background): “Tensile strength of hemp fibre/PP composites increased to 38 MPa from 29 MPa 569 after hemp fibres were treated with corona discharge, and stiffness (refers toYoung’s modulus or elastic modulus) 570 increased to 1215 MPa from 1079 MPa (Ragoubi et al. 2010).”
Physical and Chemical Modifications of Plant Fibres for Reinforcement in Cementitious Composites (2019, background): “Corona treatment Fibre wettability improved through fibre surface polarity and compatibility between hydrophilic fibres and the hydrophobic matrix Surface ablation and etching can reduce fibre firmness Usable as standalone surface treatment or early treatment to activate cellulose for chemical modif”
Interface and bonding mechanisms of plant fibre composites: An overview (2016, background): “This corona treatment has been expansively applied in plant fibre composites especially in composites involving polyolefins as the matrix[72,78,79].”
A review of recent developments in natural fibre composites and their mechanical performance (2016, background): “It has been shown to bring about chemical and physical changes of fibres including increased surface polarity (thought to be due to increased carboxyl and hydroxyl groups) and increased fibre roughness but is known to be difficult to apply to threedimensional surfaces including fibres [53,54].”