Interfacial adhesion in fully and partially biodegradable polymer composites examined with microdroplet test and acoustic emission

Czigány, Tibor; Morlin, Bálint; Mezey, Zoltán

doi:10.1163/156855407782106447

Cited by 20 publications

(8 citation statements)

References 22 publications

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“…The failure rate of the fibres by breaking rather than pulling out of the resin was high. Czigány et al [14] have pointed out the inherent drawback of using this method for natural fibres. Since the resin drop is placed on the fibre without any pressure, the resin enters the voids in the elementary fibres to a smaller extent than when the resin impregnates the fibres in compression moulding pressure.…”

Section: Interfacial Shear Strength Of Hemp/polyestermentioning

confidence: 99%

“…This value of interfacial shear strength is consistent with the value reported by other authors for natural fibres in polymer matrix. Czigány et al [14] determined the interfacial shear strength of hemp fibre (mean diameter 113 m) in polypropylene to be 5.1 ± 1.4 MPa, in biodegradable MaterBi polymer to be 2.9 ± 0.9 MPa, and in biodegradable PuraSorb polymer to be 11.3 ± 3.4 MPa. Baltazar-y-Jimenez et al [30] reported interfacial shear strength of 8.4 ± 1.8 MPa for hemp fibres in cellulose-acetate-butyrate matrix.…”

Section: Interfacial Shearmentioning

confidence: 99%

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A Study in Physical and Mechanical Properties of Hemp Fibres

Shahzad

2013

Advances in Materials Science and Engineering

105

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This paper presents the results of the experiments undertaken to evaluate various physical and mechanical properties of hemp fibres. The study of these properties is vital for comparison with similar properties of synthetic fibres and for assessing hemp fibres’ suitability for use as reinforcement in composite materials. The properties of hemp fibres were found to be good enough to be used as reinforcement in composite materials. However, the issues of relatively high moisture content of fibres, variability in fibre properties, and relatively poor fibre/matrix interfacial strength were identified as factors that can reduce the efficiency with which these fibres can be utilised.

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Section: Interfacial Shear Strength Of Hemp/polyestermentioning

confidence: 99%

Section: Interfacial Shearmentioning

confidence: 99%

A Study in Physical and Mechanical Properties of Hemp Fibres

Shahzad

2013

Advances in Materials Science and Engineering

105

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“…Indeed, this improvement of the IFSS is related to the increase in the surface roughness caused by the removal of the waxy layers and other components on the surface of the fiber, which consequently improves the compatibility between the fibers and the matrix. From the figure it is noticed that an excess of treatment deteriorates the IFSS, this can be explained by the degradation of the fibers [44][45][46].…”

Section: Single Fiber Pull Outmentioning

confidence: 95%

Alfa fiber-polyurethane composite as a thermal and acoustic insulation material for building applications

et al. 2019

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The aim of the present work pointed out the introduction of natural alkalised alpha fibres as reinforcement in the preparation of partially biodegradable green insulation material composite. Thermal conductivity, mechanical properties and acoustical performances of composites were investigated as a function of fibre content. We found that 10% of alkali solution improve the hydrophobic character, mechanical and interfacial properties of the fibers. Composites made of alfa fibers-polyurethane resin has exhibited good mechanical and acoustical properties. At 20% of reinforcement the Young modulus and tensile stress increased by 48.14% and 74.12%, respectively.

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“…The embedded length of fiber was measured with a traveling microscope and an estimate made of the fiber diameter/cross‐sectional area with a microscope. This method has several inherent drawbacks for natural fibers, as pointed out by Czigany et al and results showed the large scatter typical of data of this type from natural fibers. For example, this technique does not use any raised pressures as normally associated with hand layup and molding of plaques, so that resin would not enter voids or small cavities as would normally occur during laminate consolidation.…”

Section: Methodsmentioning

confidence: 99%

Fatigue properties of hemp and glass fiber composites

Shahzad

Isaac

2014

Polymer Composites

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The fatigue properties of nonwoven randomly oriented short hemp fiber mat and chopped strand mat (CSM) glass fiber reinforced polyester composites have been studied, mainly in tension–tension mode. Despite having poorer absolute fatigue strength, the hemp fiber composites exhibited less fatigue sensitivity as compared with the CSM glass fiber composites in tension–tension fatigue. This could be correlated with the lower stiffness degradation observed during fatigue of the hemp fiber composites as compared with the glass fiber composites at the same normalized peak stress levels. Also, images recorded during fatigue loading showed that the hemp fiber composites were better at resisting crack formation and growth than the glass fiber composites. These results suggest that hemp fiber composites have the potential to replace glass fiber composites in applications where components are subjected to fatigue loads but the stress levels are of moderate value. POLYM. COMPOS., 35:1926–1934, 2014. © 2014 Society of Plastics Engineers

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Interfacial adhesion in fully and partially biodegradable polymer composites examined with microdroplet test and acoustic emission

Cited by 20 publications

References 22 publications

A Study in Physical and Mechanical Properties of Hemp Fibres

A Study in Physical and Mechanical Properties of Hemp Fibres

Alfa fiber-polyurethane composite as a thermal and acoustic insulation material for building applications

Fatigue properties of hemp and glass fiber composites

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