Effect of moisture absorption on the mechanical properties of randomly oriented natural fibers/polyester hybrid composite

Athijayamani, A.; Thiruchitrambalam, M.; Natarajan, U.; Pazhanivel, B.

doi:10.1016/j.msea.2009.04.027

Cited by 339 publications

(194 citation statements)

References 21 publications

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“…Moreover, the diffusion coefficient values increases steadily with the increase in fibre volume fraction due to higher cellulose content as reported on hemp fibre/UPE and sisal fibre reinforced polypropylene (sisal fibre/PP) composites [21,34]. With regard of the mechanical properties of the composites under moisture absorption, the results on sisal and roselle fibres reinforced hybrid composite revealed that the percentage reduction in tensile and flexural strength of the composites increased with fibre content and length when the composites have been tested under wet conditions [33].…”

Section: Effect Of Fibre Content On Moisture Absorptionmentioning

confidence: 72%

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A review on the degradability of polymeric composites based on natural fibres

et al. 2013

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The applications of natural fibre/polymer composites in civil engineering are mostly concentrated on non-load bearing indoor components due to its vulnerability to environmental attack. This paper evaluates the characteristics of several natural fibre composites exposed to moisture, thermal, fire, and ultraviolet degradation through an extensive literature review. The effects of chemical additives such as fibre treatments, fire retardants and UV stabilizers are also addressed. Based on the evaluation conducted, optimum fibre content provides strength in a polymer composite but it also becomes an entry point for moisture attack. Several fibre treatments are also being used to improve fibre/matrix interface, thereby increasing moisture durability. However, the treated fibres were found to behave poorly when exposed to weather. The addition of UV stabilizers and fire retardants are suggested to enhance outdoor and fire performance of natural fibre/polymer composite but compromises its strength. Therefore, from the collected data and various experimental results, it was concluded that an optimum blend ratio of chemical additives must be employed to achieve a balance between strength and durability requirements for natural fibre composites. Dear EditorI would like to submit a paper entitle of "Degradability of Polymeric Composites Based on Natural Fibres" to the materials and design. This paper address important issues related to the degradation of natural fibres in polymeric composites. I believe the paper has interest to the reader of the journal and will be beneficial for many researchers in the field of materials and design considering the degradation of polymer and bio-materials. I would like to confirm that the paper has not been sent to any journal before and not under review. I hope you can send the paper fore reviewing process. Editor: Thank you for submitting your review paper. There are no technical issues. However, there are areas of the paper that need attention as follows: 1.Include more keywords -you are allowed up to 6 keywords.The keywords have been updated and highlighted in the revised version as Keywords: natural fibres; polymer composites; civil applications; characteristics degradation; weathering. 2.Include your personal university telephone number in the contact details in the paper.In the revised version it has been included as Reference 20 is incomplete. Updated 10.Reference 37 is incomplete. Updated 11.Reference 40 is incomplete. This paper is much related to the topic and it is in press. I added the DOI: 10.1080/15440478.2012.733149 . this is accepted in the production stage 12.Reference 65 is incomplete. Removed 13.In view of the above, please check all references for accuracy and completeness. Detailed Response to Reviewers JMAD-D-12-03220R1 2All the references are cited using endnote software. This makes it easy to update and cite the references in the required format at the publication stage. 14. Remove page numbers from list of table and figure captions. Page numbers removed...

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Section: Effect Of Fibre Content On Moisture Absorptionmentioning

confidence: 72%

“…Surface morphology of composites undergone moisture absorption is different to that of dry composites in terms of voids, porosity, swelling, sorption in microcracks, and disbanding around filler [33].…”

Section: Moisture Durabilitymentioning

confidence: 95%

A review on the degradability of polymeric composites based on natural fibres

et al. 2013

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“…The pores can act as stress concentration points, and lead to premature failure of the composites during loading. Therefore, studies of the composite surface topography provide vital information on the level of interfacial adhesion that exists between the fiber and matrix when used as reinforcement in wet conditions [14]. Figure 1 shows the microstructural morphology of voids in the carbon/epoxy laminate which was kept at room temperature.…”

Section: Mechanical Testsmentioning

confidence: 99%

Qualitative separation of the effect of voids on the static mechanical properties of hygrothermally conditioned carbon/epoxy composites

Zhang¹,

Li²,

Zhang³

et al. 2011

Express Polym. Lett.

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Abstract. The paper investigates the effect of voids and hygrothermal conditions on bending, compressive, and interlaminar shear strength (ILSS) of T300/914 composite laminates. By adopting different autoclave pressures during a cure cycle, specimens with three different void contents ranging from 0.33% to 1.50% were obtained. Experimental results reveal that compressive, bending strength, and ILSS decrease with increasing void contents and immersion time. The most significant decrease in strength of aged specimens is in the ILSS and compressive strength, followed by the bending strength. The effect of voids on the absorption/desorption behavior is also discussed. For a similar porosity, the compressive strength and ILSS of dried specimens are higher than that of the aged specimens, while they are lower than that of the unaged specimens. The bending strength of the dried specimens is higher than that of the unaged specimens. The experimental results are explained by the supportive micrographs that illustrate different types of voids and their morphology before and after moisture absorption/desorption.

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“…• Chemical resistance decreases with increase in fiber weight and was composites posses more chemical resistance than the untreated fiber maximum absorption for NH 4 However, pure polyester has no weight gain or loss was observed when immersed in NH…”

Section: Discussionmentioning

confidence: 99%