Recycling effects on the rheological and thermomechanical properties of polypropylene-based composites

Bahlouli, Nadia; Pessey, Daniel; Raveyre, Claude; Guillet, Jacques; Ahzi, Saı̈d; Dahoun, Abdesselam; Hiver, Jean‐Marie

doi:10.1016/j.matdes.2011.04.049

Cited by 99 publications

(96 citation statements)

References 21 publications

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“…45 The mentioned phenomena along with better fiber-polymer interlocking due to crosslinking could result in the studied composites improved modulus of elasticity after Rec4. 12,13,37,46,47 boosted interfacial adhesion. This, in turn, results in better stress transfer and so increased impact strength value.…”

Section: Static Testsmentioning

confidence: 94%

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Effects of Multiple Extrusions on Structure-property Performance of Natural Fiber High-density Polyethylene Biocomposites

et al. 2018

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Detailed analysis of the effects of multiple extrusions on physical, mechanical, micro-structural as well as dynamic mechanical thermal properties of natural fiber high-density polyethylene (HDPE) composites is reported. Composite materials containing HDPE, wood flour, and Maleic Anhydride polyethylene (MAPE) were manufactured and subjected to a recycling process consisting of up to four times grinding and reprocessing under industrial conditions. A wide range of analytical methods including bending tests, modulus of elasticity, impact strength, Scanning electron microscopy (SEM), fiber length measurement, water absorption tests, and dynamic mechanical thermal analysis (DMTA) were employed to understand the effects of recycling on natural fiber-HDPE composites. The results revealed that the recycled composites had lower bending strength and modulus of elasticity values, as compared to the reference counterparts. Also, the once recycled composites showed higher impact strength. Results, as well, indicated that generally the recycled composites had lower water absorption values as compared to the reference ones. The results obtained from DMTA exhibited a decrease in storage modulus and an increase in mechanical loss factor (tan δ) for all composites subjected to recycling. Alterations in phase transition temperatures and intensities were also monitored and the possible reasons were analyzed.

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Section: Static Testsmentioning

confidence: 94%

“…3 This thermal degradation can result on one hand in both cross-linking and chain scission of the polymer matrix and on the other hand in structural and chemical attrition of wood flour. [4][5][6][7][8][9][10][11][12][13] The literature review indicates that PP is significantly less stable than PE.…”

Section: Introductionmentioning

confidence: 99%

Effects of Multiple Extrusions on Structure-property Performance of Natural Fiber High-density Polyethylene Biocomposites

et al. 2018

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“…When the heat and pressure are removed, these plastics solidify and acquire the shape of the mold cavity. The re-application of temperature and pressure can restart the process, thereby rendering these materials recyclable [7][8][9][10] . Mechanical recycling is the most widespread form of recycling and is commonly used to recycle plastics industrially 8 .…”

Section: Introductionmentioning

confidence: 99%

“…The re-application of temperature and pressure can restart the process, thereby rendering these materials recyclable [7][8][9][10] . Mechanical recycling is the most widespread form of recycling and is commonly used to recycle plastics industrially 8 . Mechanical recycling reuses waste to obtain another plastic product via reprocessing of the polymeric materials in industrial equipment 9 .…”

Section: Introductionmentioning

confidence: 99%

“…This type of recovery is mainly restricted to thermoplastics because thermosets cannot be remolded by the application of heat 9,10 . The recycling of polypropylene (PP) is one example of polymer recycling 8 . The main driving force behind the increased recycling of post-consumer PP is its widespread use, particularly in the automotive industry 1 .…”

Section: Introductionmentioning

confidence: 99%

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The Recycling of Sugarcane Fiber/Polypropylene Composites

et al. 2015

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Mechanical recycling is utilized to reuse waste and obtain other plastic products via the reprocessing of a material in industrial equipment. Natural fiber composites have become more popular in recent years; however, these composites' mechanical behavior remains less well-understood than single polymers' behavior after recycling. Therefore, the objective of this work was to study the degradation of different sugarcane fibers/polypropylene composites using new grinding and injection processes and to evaluate the mechanical properties of these materials using analysis of variance (ANOVA). This work reveals the mechanical behaviors of recycled natural fiber composites that contain thermal stabilizer additives. Polypropylene composites reinforced with differently treated bagasse and straw fibers (10 and 20 wt%/PP) were obtained through melt mixing using a high-intensity thermokinetic mixer and were subsequently injected. The recycled composites exhibited decreased tensile strength relative to the original composites. However, when thermal stabilizers were added, the mechanical properties were maintained or increased, depending on the fiber and additive types.

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Recycling Polymer Composites

Xavier

2022

Thermoplastic Polymer Composites

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Recycling effects on the rheological and thermomechanical properties of polypropylene-based composites

Cited by 99 publications

References 21 publications

Effects of Multiple Extrusions on Structure-property Performance of Natural Fiber High-density Polyethylene Biocomposites

Effects of Multiple Extrusions on Structure-property Performance of Natural Fiber High-density Polyethylene Biocomposites

The Recycling of Sugarcane Fiber/Polypropylene Composites

Recycling Polymer Composites

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