The mechanical and physical properties of polyurethane composites based on rice husk and polyethylene glycol

Rozman, H. D.; Yeo, Youn-Gu; Tay, G. S.; Abubakar, A.

doi:10.1016/s0142-9418(02)00165-4

Cited by 98 publications

(57 citation statements)

References 12 publications

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“…This shows that the stiffness of the composites is contributed predominantly by inherent stiffness of sawdust filler and epoxy matrix (Rozman et al, 2003). Degradation in tensile modulus after immersion in sea and distilled water was observed just as in case of tensile strength.…”

Section: Tensile Testmentioning

confidence: 69%

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

Nair

2018

Int. j. adv. appl. sci.

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The purpose of this study is to improve mechanical property of long coir fibers of length 100-150mm using well graded sawdust filler and to scrutinize viability when subjected to distill and sea water conditions for calculated duration. Study involves fabricating eco-friendly composite specimens by maintaining optimum percentage of natural fibers and fillers without compromising on mechanical strength. The composites of different proportions by percentage of matrix (85%, 80%, 75%, 70%), reinforcement (15%, 15%, 15%, 15%), and filler (0%, 5%, 10%, 15%) by mass is developed by hand layup method and compared for their mechanical properties in dry, distilled and sea water conditions. Mechanical properties of coir composite materials improved in addition to sawdust fillers up to certain percentage. In dry condition tensile, flexural and hardness was observed. A maximum tensile and flexural modulus of 7.61Gpa and 2.16Gpa respectively was observed. Higher water absorption was noticed in specimen with higher filler percentage than the specimen with no filler. This is due to hydrophilic nature of sawdust and coir. Specimens immersed in distilled and sea water observed a slump by certain percentage in their strength with increase in fillers. Efficient utilization of filler has improved mechanical performance up to certain percentage when compared to specimen with no filler. As the filler percentage increased above 5% due to the higher fiber length and cluster behavior of coir, resistant in resin penetration was observed as a result specimen turned out to be more and more redundant.

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Section: Tensile Testmentioning

confidence: 69%

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

Nair

2018

Int. j. adv. appl. sci.

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“…In this case, ANOVA showed significant differences for all families. Rozman et al (2003) [12] developed PU/RH composite with different particle sizes and observed higher tensile modulus and strength, for smaller particles. According to the authors, this was expected because smaller size fillers give larger surface area per volume for the interaction between OH groups from rice hulls with NCO groups from PU.…”

Section: Mechanical Characterizationmentioning

confidence: 98%

Reuse of waste paper and rice hulls as filler in polymeric matrix composites

et al. 2017

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Concerns for the environment are recurrent in our society, and research on low impact materials such as those produced from waste is an alternative. This work is based on the reuse of scrap paper and rice hulls aiming to increase the life cycle of these waste products and to find better destination. Composites with a volumetric filler content (dispersed phase) of 80% were produced via compression molding using polyurethane (PU) based on castor oil or polyester resin as matrix, in four distinct families: polyester/rice hulls, PU/rice hulls, polyester/paper and PU/paper. The following tests were performed: water sorption, contact angle, hardness, impact and tensile testing. Scanning electron microscopy (SEM) was used for fracture morphology study. Basic visual analysis showed greater void content for the rice hull composites, making them less aesthetically appealing compared to paper. It was observed in the case of PU matrix the filler greatly influenced the rigidity since this pure material was more flexible compared to pure polyester. Filler incorporation decreased tensile strength of the polyester matrix but significantly increased that of the PU matrix.

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“…Many researchers have been carried out to incorporate lignocellulosic to produce composites especially of EFB [14,15,16], kenaf [17], banana fiber [18], jute [19], hemp [20] coir [21], flax [22] pineapple leaf [23], ramie [24], sisal and etc. Lignocellulosic materials' tower over synthetic fibers like aramide, carbon or glass fiber with their suitable strength properties, low cost, low density, non-abrasive, improved energy recovery and biodegradable [21].…”

Section: Physical and Mechanical Properties Of Lignocellulosic Fibersmentioning

confidence: 99%

An Overview on Lignocellulosic Fibers Ienforced Polymer Composite Materials

Redwan¹,

Badri²,

Baharum³

2017

JNUS

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In polymer science lignocellulosic fiber-reinforced polymer composite materials have appeared in a wide range area. The composite made from those varieties of materials are low density, low value, comparable certain properties, and most importantly they're environmental friendly. Although a number of the properties linked to composites generated from oil palm fibers and polymers (namely, those that are accessible through commerce) display aspects of commonality when compared to conventional synthetic fiber composites, such properties depend to a significant degree on the extent to which the fibers and matrix phase is compatible with the capacity to absorb moisture. Importantly, this emerges as a key concern and, moreover, disadvantages of Lignocellulosic fibers polymer composites and studies have suggested that it has a considerable impact on the composites' physical and mechanical properties. The central aim of the current paper is to provide an overview of the extant research relating to Lignocellulosic fibers reinforced polymer composites, and particular attention will be directed towards the physical structure and constituent chemical components of Lignocellulosic fibers.

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The mechanical and physical properties of polyurethane composites based on rice husk and polyethylene glycol

Cited by 98 publications

References 12 publications

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

Effect of sawdust impregnation on long coir fibers reinforced with epoxy matrix

Reuse of waste paper and rice hulls as filler in polymeric matrix composites

An Overview on Lignocellulosic Fibers Ienforced Polymer Composite Materials

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