Determination of interfacial properties of cellulose nanocrystal-modified sisal fibre in epoxy by cyclic single-fibre pull-out
Source abstract
Abstract
Abstract To examine the effects of surface modification on the interfacial properties, the surface of sisal fibres was modified by rod-like cellulose nanocrystals (CNCs) with length-to-diameter ratios ranging from 20 to 33, which were prepared using an electrophoretic deposition method. An effective method was proposed for measuring the interfacial properties of sisal fibre/matrix, including interfacial fatigue strength and toughness, via cyclic single-fibre pull-out with the aid of dynamic mechanical analyser (DMA). It was found that the interfacial fatigue shear strength of the CNC-modified sisal fibre/epoxy specimens was 6.6 MPa, 1.2 times greater than that of specimens without treatment. Moreover, the interfacial toughness 9.34 J/m2 of the CNC-treated sisal fibre/epoxy specimens increased by 51% compared to that of the untreated specimens. It was indicated that pull-out of the CNCs with a large aspect ratio was the main toughening mechanism for CNC-modified sisal fibre/epoxy interface.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Natural Fiber Reinforced Composites · Mechanical Behavior of Composites · Fiber-reinforced polymer composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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