A mechanical study of the deterioration of coconut leaf thatch under natural and accelerated environmental conditions

Pillai, C. K. S.; Venkataswamy, MA; Satyanarayana, K. G.; Sreedharan, V. P.; Indira, C.; Rohatgi, P. K.

doi:10.1007/bf00644663

Cited by 9 publications

(3 citation statements)

References 2 publications

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“…[1][2][3][4] The main disadvantages of the use of natural fibers as a reinforcement element in composites are well established and discussed in the literature. 2,[5][6][7][8] One can highlight, for example, the presence of a weak fiber-matrix interface as a common characteristic for these composites that can strongly reduce their applicability. [7][8][9][10] Weak interfaces can be used to advantage, however, to increase the toughness of composites.…”

Section: Introductionmentioning

confidence: 99%

Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites

Boynard

Monteiro

d’Almeida

2003

J of Applied Polymer Sci

109

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Sponge gourd (Luffa cylindrica) forms a natural mat that deviates the crack path in brittle thermoset resin matrix composites, leading to a controlled fracture mode and increasing the toughness of the composite. The use of luffa as reinforcement is, however, restricted by a very weak fiber-matrix interface. In this work, luffa fibers were alkali-treated at two temperatures, with varying alkali concentrations. Although the surface analysis shows that the treatments promote a clear removal of the outer surface layer of the fibers with the exposition of the inner fibrillar structure and the consequent increase of the fiber surface area, only a secondary increase on the mechanical properties was obtained. The slight increase observed was attributed only to mechanical interlock. Long pullout lengths and neat fiber beads were the main features observed at the fracture surface of the treated and untreated fiber composites.

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Section: Introductionmentioning

confidence: 99%

Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites

Boynard

Monteiro

d’Almeida

2003

J of Applied Polymer Sci

109

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“…Instead, mechanical properties of the plant-integrated materials, and deterioration of plant tissues, occupied the attention of construction engineers. Excellent examples are development of lightweight cement boards using coconut coir [24], deterioration of coconut leaf thatches under natural and accelerated environmental conditions [25], thermal degradation of banana and coconut fibers [26], and hydration characteristics of cement-bonded composites made from rattan cane and coconut husk [27]. Thermoregulatory dimension of using plant fibers, exploiting the intricacies of flow through their pores, which is analogous to the flow system in skin vasculature (as described in the subsequent sections), has not been explored thus far.…”

Section: Plant Leaves and Human Skin As Thermoregulatory Systems: Welmentioning

confidence: 99%

Biomimetics of stabilized earth construction: Challenges and opportunities

Reddi

Jain

Yun

et al. 2012

Energy and Buildings

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“…[2] Lignocellulosic fibers are ecologically friendly, biodegradable, and are renewable resources, which are spread worldwide and, therefore, are not prone to embargo or monopolies. [9] Therefore, weathering of natural fiber reinforced composites can promote undesirable property changes that can prevent their actual use. Just as one example of the large mass of rural works that are, or can be, economically dependent on lignocellulosic fibers, the sisal culture in the Brazilian state of Bahia sustains around one million people.…”

Section: Introductionmentioning

confidence: 99%

Accelerated Aging of Hybrid Ramie-Cotton Resin Matrix Composites in Boiling Water

Júnior

Carvalho

Fonseca

et al. 2005

Polymer-Plastics Technology and Engineering

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The effect of accelerated aging by immersion in boiling water on the tensile behavior of a hybrid ramie-cotton fabric polyester composite was evaluated. Under these conditions, fast water absorption by the lignocellulosic fibers took place, causing a sharp reduction in the tensile strength of the composite during the first 5 h ORDER REPRINTS of immersion. A decrease in Young's modulus and an increase in the deformation at break were observed at longer immersion times. It was shown that resin embrittlement occurred under the aging conditions used in this work, which was attributed to the leaching out of low molecular weight substances. Therefore, the plasticizing effect observed with the composites was attributed to the presence of the lignocellulosic fibers. The water absorption kinetics were satisfactorily modeled using the Fickian model.

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A mechanical study of the deterioration of coconut leaf thatch under natural and accelerated environmental conditions

Cited by 9 publications

References 2 publications

Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites

Aspects of alkali treatment of sponge gourd (Luffa cylindrica) fibers on the flexural properties of polyester matrix composites

Biomimetics of stabilized earth construction: Challenges and opportunities

Accelerated Aging of Hybrid Ramie-Cotton Resin Matrix Composites in Boiling Water

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