Parametric analysis of flammability performance of polypropylene/kenaf composites

Subasinghe, Aruna; Das, Raj; Bhattacharyya, Debes

doi:10.1007/s10853-015-9520-0

Cited by 21 publications

(7 citation statements)

References 32 publications

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“…However, in this study, an optimum sisal fiber treatment time of 72 h was observed at which PL/SF/72 biocomposites exhibited superior tensile and flexural strength. This decrease in the optimum treatment time may be attributed to the thermomechanical processing during extrusion–injection molding process, which is reported to enhance the interaction between fibers and the matrix . Moreover, the sisal fibers sourced in this study exhibited a maximum fiber strength after 72 h of treatment while Fiore et al reported a maximum fiber strength after 120 h of treatment.…”

Section: Resultsmentioning

confidence: 58%

Sisal fiber‐reinforced green composites: Effect of ecofriendly fiber treatment

Chaitanya

Singh

2017

Polymer Composites

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This research endeavor explores the effect of economical and environment‐friendly treatment of sisal fibers, prior to their incorporation into poly‐lactic acid (PLA). Biocomposites incorporating sisal fibers (30% [w:w]) treated with sodium bicarbonate (10% [w:v]) aqueous solution for varying time periods (24, 72, 120, and 168 h) were developed using extrusion‐injection molding process. Thermogravimetric analysis, morphological examination, Fourier‐transform infrared spectroscopy, and lignocellulosic composition analysis of raw and treated sisal fibers established a gradual removal of hemicellulosic content from fiber surface with increasing treatment time. Biocomposites incorporating sisal fibers treated for 72 h exhibited optimum tensile, flexural, and compressive properties. While in case of impact testing, biocomposites incorporating sisal fibers treated for 24 h exhibited maximum impact strength. The optimum results were found comparable to sodium hydroxide treated sisal fiber‐reinforced biocomposites. Hence, considering commercialization of biocomposites, sodium bicarbonate treatment offers huge potential to substitute ecologically hazardous sodium hydroxide treatment ensuring good mechanical properties. POLYM. COMPOS., 39:4310–4321, 2018. © 2017 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 58%

Sisal fiber‐reinforced green composites: Effect of ecofriendly fiber treatment

Chaitanya

Singh

2017

Polymer Composites

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“…In addition, it is difficult to determine the optimum combination of parameters to predict the improved mechanical properties. To solve this problem, design of experiment (DOE) method was used [38][39][40][41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Modeling and optimization of tensile strength and modulus of polypropylene/kenaf fiber biocomposites using Box–Behnken response surface method

Yaghoobi

Fereidoon

2017

Polymer Composites

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The aim of this work includes modeling and optimization of the tensile properties of natural fiber biocomposites using the concept of experimental design. A three‐factor, three‐level Box–Behnken design, which is subset of the response surface methodology (RSM), has been applied to present mathematical models. The effect of three independent variables; kenaf fiber load, fiber length and polypropylene‐grafted maleic anhydride (PP‐g‐MA) compatibilizer content have been investigated on the tensile strength and modulus of polypropylene/kenaf fiber/PP‐g‐MA biocomposite. These models can be used as an interesting method for analytically evaluating both the tensile strength values and their corresponding tensile modulus as function of independent variables. The optimization results, obtained using the optimization part of Design‐Expert Software, showed that the most optimal tensile strength and tensile modulus were to be 32.70 MPa and 2,182.33 MPa, respectively; and achieved at 28.95 wt% of the kenaf fiber, fiber length of 6.22 mm and PP‐g‐MA content of 5 wt%. The obtained R2 values and normal probability plots indicated a good agreement between the experimental results and those predicted by the model (above 0.95 for all the responses). Moreover, the tensile modulus of the biocomposite was analyzed by means of micromechanical models. The performance of the Halpin–Tsai and Cox–Krenchel models in predicting the tensile modulus of biocomposites was compared with available experimental results. In addition, the fracture surface morphologies and wettability of the samples were investigated by scanning electron microscopy (SEM) and contact angle measurement, respectively. It was found that the fiber load and PP‐g‐MA compatibilizer content play a significant role in the tensile properties and morphology of the biocomposites, as proven by SEM and contact angle measurement. POLYM. COMPOS., 39:E463–E479, 2018. © 2017 Society of Plastics Engineers

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“…Testing also plays a crucial role, as it is part of the regulatory framework that ensures product compliance. As such, the testing requirements for natural fiber composites extends beyond traditional mechanical tests, and flammability tests provide useful results for comparison 18‐20 . Some studies mentioned in Table 1 investigated thermal stability using thermogravimetric analysis (TGA), but there were no assessments on the fire performance of composites with sugar‐cane bagasse.…”

Section: Introductionmentioning

confidence: 99%

Comparing the ignition and burning hazards of sugar‐cane bagasse and hemp epoxy composites

2021

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Summary The feasibility of using sugar‐cane bagasse as a reinforcement for natural fiber composites and the performance of these composites under fire conditions was investigated. Plies were manufactured using a process, which involved alkali‐treating bagasse, blending, pressing, and drying. Soaking durations of 30 minutes and 24 hours were compared. Composites were then made with these plies using a light resin transfer molding process. The composites were characterized and compared to a commercial hemp fabric using thermogravimetric analysis for thermal stability and char yield, isotropic hot disc method for thermal conductivity and specific heat capacity, and cone calorimeter for flammability. The investigation found that bagasse plies could be successfully used in composite manufacture, but posed a greater ignition hazard, and a comparable burning behavior hazard to the commercial product when tested at a radiant heat flux of 35 kW/m2. Thirty minutes treating resulted in a ply, which resulted in a char yield of 28%. Although in the composite form, there were no significant differences between all sample groups. With regards to ignition, the hemp composite had the latest time‐to‐ignition of 137 seconds. Comparison of the thermal properties to the ignition times showed that higher values of thermal properties resulted in later ignition times. The composite with the 30‐minute treated bagasse had a total heat release of 159 MJ/m2 and average heat release rate of 263 kW/m2, while the peak heat release rate was lower for the 24‐hour treated bagasse at 537 kW/m2. Overall, no significant differences in the two treatment durations were observed.

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Parametric analysis of flammability performance of polypropylene/kenaf composites

Cited by 21 publications

References 32 publications

Sisal fiber‐reinforced green composites: Effect of ecofriendly fiber treatment

Sisal fiber‐reinforced green composites: Effect of ecofriendly fiber treatment

Modeling and optimization of tensile strength and modulus of polypropylene/kenaf fiber biocomposites using Box–Behnken response surface method

Comparing the ignition and burning hazards of sugar‐cane bagasse and hemp epoxy composites

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