Melt rheological behaviour of short pineapple fibre reinforced low density polyethylene composites

George, Jesiya Susan; Janardhan, R.; Anand, J. S.; Bhagawan, S. S.; Thomas, Sabu

doi:10.1016/s0032-3861(96)00386-2

Cited by 151 publications

(87 citation statements)

References 20 publications

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“…However, melt viscosity increases concurrently with increases in filler concentration (Shenoy 1999). Similar trends in terms of increased viscosity with increased aspect ratio or increased concentrations were also highlighted in the literature (Dae Han 1974, George et al 1996, Guo et al 2005, Dong et al 1992). Wolcott (2004, 2005) examined the effect of WF species, size, and content (30-70%) using capillary rheometry.…”

Section: Introductionsupporting

confidence: 77%

The effect of micron sized wood fibers in wood plastic composites

Gallagher

McDonald

2013

Maderas, Cienc. tecnol.

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The popularity and demand for wood plastic composites (WPC) has focused research on fiber properties associated with performance. In this study, maple wood fibers (WF) were ball milled and classified into discrete size fractions. Fiber analyses showed only three distinct WF size classes (80-100, 100-200 and <200 mesh). High density polyethylene (HDPE) based WPC were made from classified WF (10 to 50%). The effect of WF size, loading, and maleated polyethylene (MAPE) coupling agent on WPC rheological behavior (torque rheometry and melt flow rate (MFR)) and flexural properties were examined. The WPC MFR decreased with wood loading, increased with a reduction in WF size. The modulus of rupture (MOR) was shown to increase with a reduction in WF size and increase with the addition of MAPE. The increase in MOR is likely due to an increase in the interfacial interaction between the polymer and WF. Modulus of elasticity (MOE) was shown to increase with an increase in wood loading and decrease with a decrease in WF size. The toughness of the WPC was shown to increase with a decrease in WF size and increase upon addition of MAPE.

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Section: Introductionsupporting

confidence: 77%

The effect of micron sized wood fibers in wood plastic composites

Gallagher

McDonald

2013

Maderas, Cienc. tecnol.

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“…An increase in viscosity of the composites with increasing vetiver content is more predominant at low shear rate (10-10 2 s À1 ) than that of at high shear rates (10 2 -10 4 s À1 ). An increase in viscosity of the composites with increasing fiber contents is also found from the study of natural fiber composites [15,16]. It is interesting to point out that the viscosity at high shear rates (10 2 -10 4 s À1 ) of vetiver-PP composites at 20% vetiver content is about 1.2 times higher than that of PP.…”

Section: The Effect Of Chemical Treatment On Thermal Properties Of Vesupporting

confidence: 66%

Vetiver–polypropylene composites: Physical and mechanical properties

Ruksakulpiwat

Suppakarn

Sutapun

et al. 2007

Composites Part A: Applied Science and Manufacturing

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Injection molded vetiver-polypropylene (PP) composites at various ratios of vetiver content and vetiver length were prepared. When compared to PP, vetiver-PP composites exhibited higher tensile strength and Young's modulus but lower elongation at break and impact strength. An increase in vetiver content led to an increase in viscosity, heat distortion temperature, crystallization temperature, and Young's modulus of the composites. On the other hand, the decomposition temperature, tensile strength, elongation at break, and impact strength decreased with increasing vetiver content. The chemical treatment of the vetiver grass improved the mechanical properties of the composites.

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“…The polymeric matrix used was HDPE (HP54-60) of density 0.95 g/cm 3 , (melt flow index) MFI = 0.35 g/10min. Agro fiber by-products such as Corncob, Rice hull, Flax shives and Walnut shell flour (60 -100 mesh) was used as received from the manufacturers and sieve analysis was conducted on oven dried (OD) fibers (100 g) using a Mechanical Sieve Shaker (Model Rx-86) with standard test sieves (50, 60, 70, 80, 100, 120 mesh and pan) for 10 min, according to the Rotap A method (ASTM D5644-010).…”

Section: Methodsmentioning

confidence: 99%

“…Most of the work being done on WPC/NFC is dedicated to investigation of the impact fracture and deformation behavior as well as influence of various additives on the mechanical properties, aging and durability [2]. Along with the improvements that wood fillers bring to the matrix polymer, their addition also results in reduced ductility and poor impact resistance [3]. Furthermore, addition of wood fillers to thermoplastic polymers is accompanied by a considerable increase in the melt viscosity [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Characterization and Comparison of Rheological Properties of Agro Fiber Filled High-Density Polyethylene Bio-Composites

Ogah¹,

Afiukwa²,

Nduji³

2014

OJPChem

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The rheological behavior of composites made with high-density polyethylene (HDPE) and different agro fiber by-products such as corncob (CCF), Rice hull (RHF), Flax shives (FSF) and Walnut shell (WSF) flour of 60 -100 mesh were studied. The experimental results were obtained from samples containing 65 vol.% agro fiber and 3 wt.% lubricant. Particle sizes distribution of the agro fibers was in the range of 0.295 mm to ˂0.125 mm. SEM showed evidence of complete matrix/fiber impregnation or wetting. The melt rheological data in terms of complex viscosity (η*), storage modulus (G'), loss modulus (G"), and loss tangent (tanδ) were evaluated and compared for different samples. Due to higher probability of agglomeration formation in the samples containing 65 vol.% of agro fillers, the storage modulus, loss modulus and complex viscosity of these samples were high. The unique change in all the samples is due to the particle size distribution of the agro fibers. The storage and loss modulus increased with increasing shear rates for all the composites, except for Walnut shell composite which exhibited unusual decrease in storage modulus with increasing shear rate. Damping factor (tanδ) decreased with increasing shear rate for all the composites at 65 vol.% filler load although there were differences among the composites. Maximum torque tended to increase at the 65 vol.% agro fiber load for all composites. Corncob and Walnut shell composites gave higher torque and steady state torque values in comparison with Flax shives and Rice hull composites due to differences in particle sizes distribution of the agro fibers.

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Melt rheological behaviour of short pineapple fibre reinforced low density polyethylene composites

Cited by 151 publications

References 20 publications

The effect of micron sized wood fibers in wood plastic composites

The effect of micron sized wood fibers in wood plastic composites

Vetiver–polypropylene composites: Physical and mechanical properties

Characterization and Comparison of Rheological Properties of Agro Fiber Filled High-Density Polyethylene Bio-Composites

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