Influence of kenaf form and loading on the properties of kenaf‐filled polypropylene/waste tire dust composites: A comparison study

Pang, Ai Ling; Ismail, Hanafi

doi:10.1002/app.40877

Cited by 12 publications

(4 citation statements)

References 28 publications

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“…The addition of 30 wt% HF in the PP led to a three-fold reduction of the elongation at break, a 2.5-fold increase in the modulus, and a 30% increase in the tensile strength. A similar effect of the natural fibers in the PP matrix was previously signaled [ 13 , 38 , 39 ]. The impact strength of the PP/HF composite was only slightly affected by the presence of HF.…”

Section: Resultssupporting

confidence: 76%

Complex Effects of Hemp Fibers and Impact Modifiers in Multiphase Polypropylene Systems

et al. 2023

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Natural fibers-reinforced polymer composites have progressed rapidly due to their undeniable advantages. Most of the commercial polypropylene (PP)-based materials are characterized by either high impact toughness or high stiffness, while the manufacture of PP composites with both good toughness and stiffness is challenging at present. In this work, poly[styrene-b-(ethylene-co-butylene)-b-styrene] (SEBS) and poly(styrene-b-butadiene-b-styrene) (SBS) copolymers were used in different amounts as modifiers in PP/hemp fibers (HF) composites, with the aim to use them for electrical vehicle parts. The interface in these multiphase systems was controlled by the addition of maleated polypropylene (MAPP). SEBS and SBS showed different effects on the elongation at break of the blends and the corresponding composites due to the HF that stiffened the multiphase systems. Similarly, a different action of MAPP was observed in the composites containing SEBS or SBS: higher Young’s and storage moduli were obtained for the composite containing SBS, while greater elongation at break and impact strength values were recorded for the SEBS-containing system. In addition, a remarkable dispersion in the MAPP-containing composite and two times smaller average particle size were revealed by the SEM analysis for the SEBS particles compared to the SBS ones. The higher affinity of SEBS for PP compared to that for SBS and the different morphological characteristics of the systems containing SEBS and SBS may explain the different effects of these impact modifiers on the mechanical properties of the composites. The composites developed in this work were designed as substitutes for the fully synthetic polymeric materials or metal components used in the manufacturing of automotive parts.

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Section: Resultssupporting

confidence: 76%

Complex Effects of Hemp Fibers and Impact Modifiers in Multiphase Polypropylene Systems

et al. 2023

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“…MOE values were increased with the increment of wood flour amounts. Similar results were also reported for other wood flours-filled polymer composites (Woodhams et al 1993;Wang et al 2003;Mengeloglu et al 2007;Santiagoo et al 2011;Ramezani Kakroodi et al 2013;Pang and Ismail 2014). Lignocellulosic fillers show a higher modulus compared to polymers.…”

Section: Mechanical Properties Of Wpcssupporting

confidence: 84%

Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

Basboga

2023

BioRes

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This study investigated the effects of Iroko wood flour (WF) and nano-titanium dioxide (TiO2) concentration on the properties of polypropylene (PP)-based composites, including accelerated weathering resistance, tribological behavior, thermal stability, physical characteristics, mechanical strength, morphological features, color changes, and surface roughness. The results showed that the presence of WF and TiO2 significantly influenced the density, hardness, thermal stability, crystallinity, coefficient of friction, and wear rate of the composites. Both fillers positively impacted the tensile strength, flexural strength, and flexural modulus of the composites, although the elongation at break values decreased. TiO2 addition enhanced thermal stability and protection against UV radiation, whereas using wood flour negatively affected color properties. Moreover, the surface roughness of the composites was affected by weathering time and wood flour content. These findings highlight the potential of WF and TiO2 as effective fillers for enhancing PP-based composites’ properties and weathering resistance.

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“…In spite of the advantages of natural fiber thermoplastic biocomposites, the thermal and mechanical properties of biocomposites are a major concern for their final use in various industries. Consequently, various standardized tests have been developed for their characterization, such as tensile, flexural, compression, vibration, fatigue, fracture, stress and impact tests .…”

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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Influence of kenaf form and loading on the properties of kenaf‐filled polypropylene/waste tire dust composites: A comparison study

Cited by 12 publications

References 28 publications

Complex Effects of Hemp Fibers and Impact Modifiers in Multiphase Polypropylene Systems

Complex Effects of Hemp Fibers and Impact Modifiers in Multiphase Polypropylene Systems

Polypropylene-based composites reinforced with waste tropic wood flours: Determination of accelerated weathering resistance, tribological, and thermal properties

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

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