Rheological behavior of short sisal fiber-reinforced polystyrene composites

Nair, K Chandrasekharan; Kumar, Rohit; Thomas, Sabu; Schit, S.C; Ramamurthy, K.

doi:10.1016/s1359-835x(00)00083-x

Cited by 126 publications

(102 citation statements)

References 10 publications

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“…As the fiber loading or the temperature increases, either a balance is created, giving a constant η * , or one dominates over the other and increases the η * . With 30% fiber loading, η * increases as expected, in which this case the viscosity is governed by a fiber-melt interaction [14,29]. Figures 4(a) and (b) showed the effect of KF loading on the tensile strength and tensile modulus of the composites.…”

Section: A Noranizan I Ahmad 36supporting

confidence: 58%

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Effect of Fiber Loading and Compatibilizer on Rheological, Mechanical and Morphological Behaviors

Noranizan¹,

Ahmad²

2012

OJPChem

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This study presents the composites prepared by melt blending based on high-density polyethylene, containing various amounts of kenaf fiber loadings and polyethylene-grafted maleic anhydride (PE-g-MA) in an internal mixer were prepared and investigated. Fourier transform infrared spectroscopy was used to characterize both untreated and treated kenaf fibers. A rheological study of the composites showed a high complex viscosity and dynamic shear storage modulus between untreated and treated composites and composites with compatibilizer. A mechanical test showed that the tensile strength and tensile modulus were optimal with 20% fiber loading but decreased with 30% fiber loading for both the untreated and treated composites. The composite with PE-g-MA showed an improved mechanical strength. This phenomenon is due to an increase in the interfacial adhesion between the fiber and matrix leading to an improvement in the compatibility of the blend. Treatment of the kenaf fiber improved in the mechanical and impact strengths in comparison to the untreated kenaf composites. This behavior was supported by a morphology analysis of the fractured surfaces revealed that strong interfaces were formed on addition of the compatibilizer.

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Section: A Noranizan I Ahmad 36supporting

confidence: 58%

“…The resultant blends of these two types of polymers are almost immiscible. The poor interaction between the matrix and filler interphase causes weaker mechanical properties [14]. To improve their interaction, modification of both polymers and additives has been conducted.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fiber Loading and Compatibilizer on Rheological, Mechanical and Morphological Behaviors

Noranizan¹,

Ahmad²

2012

OJPChem

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“…According to Nair et al 25 at low concentration levels, the viscosity is expected to increase rapidly with increasing concentration of the fibers because of the rapidly increasing collisions between particles as they become packed more closely to each other. However, at a critical concentration level, random packing ceases to be possible and further increase in fiber concentration leads to a more orderly anisotropic structure of the fibers in suspension, and these may now slide readily past one another.…”

Section: Torque Rheometrymentioning

confidence: 99%

Rheological, Morphological and Mechanical Characterization of Recycled Poly (Ethylene Terephthalate) Blends and Composites

et al. 2017

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This study evaluated the effect of adding poly (ethylene methyl acrylate) (EMA) and cotton linter (CL) on the properties of recycled poly (ethylene terephthalate) (PET rec ). For this, PET rec /EMA blend and PET rec /EMA/CL composite were developed. In order to improve the interfacial adhesion and the properties of these materials, ethylene/methyl acrylate/glycidyl methacrylate terpolymer (EMA-GMA) and polyethylene-grafted maleic anhydride (PE-g-MAH) were added. The rheological results showed that the addition of EMA increased and the addition of 1 wt% of CL reduced the viscosity. The morphological analysis of the non-compatibilized blend and composite showed poor interfacial adhesion. Polymer blends with 2 and 6 wt% of EMA had better mechanical properties, since these formulations have the smallest average particle diameter of 0.58 and 1.00 µm, respectively. The mechanical testing of composites showed a material with higher maximum strength and elasticity modulus than polymer blend when analyzed at the same EMA phase concentration. The use of EMA-GMA was effective in reducing the size of particles of the EMA in the blend.

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“…As frequency increased, the loss modulus differences increased between composites at same agro fiber load compared with that in the low frequency. The loss modulus behavior indicated that the ability of impact absorption was improved for all samples [41,42]. Figure 6 showed the variation of damping factor with frequency.…”

mentioning

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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Rheological behavior of short sisal fiber-reinforced polystyrene composites

Cited by 126 publications

References 10 publications

Effect of Fiber Loading and Compatibilizer on Rheological, Mechanical and Morphological Behaviors

Effect of Fiber Loading and Compatibilizer on Rheological, Mechanical and Morphological Behaviors

Rheological, Morphological and Mechanical Characterization of Recycled Poly (Ethylene Terephthalate) Blends and Composites

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

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