Lignin as additive in polypropylene/coir composites: Thermal, mechanical and morphological properties

Morandim-Giannetti, A. A.; Agnelli, José Augusto Marcondes; Lanças, Bruno Z.; Magnabosco, Rodrigo; Casarin, Suzan Aline; Bettini, Sílvia Helena Prado

doi:10.1016/j.carbpol.2011.11.041

Cited by 211 publications

(139 citation statements)

References 17 publications

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“…Due to its structure, lignin has been investigated as antioxidant [47,66]. The high thermal stability of lignin is due to the presence of complex phenylpropanoid units, which consist of aromatic phenyl groups.…”

Section: Oxidation Induction Timementioning

confidence: 99%

“…Nevertheless, some authors have not confirmed the negative role of lignocellulosic component and also compatibilization process in thermo-oxidative stability of the composites [46][47][48]. These authors noted completely different results.…”

Section: Introductionmentioning

confidence: 96%

“…Ehsani et al [46] noted that wood fibres increase the required time for oxidation of the composite in comparison to pure PP. Also, Bettini et al [47] presented increase in OIT and initial decomposition temperatures when PP-g-MMA compatibilizer is incorporated into the polypropylene/coir composites. It is an indication that PPg-MA may act as antioxidant and thermal protective barrier for fibres.…”

Section: Introductionmentioning

confidence: 99%

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The thermo-oxidative stability and flammability of wood/polypropylene composites

Borysiak

2014

J Therm Anal Calorim

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The main aim of the study was to evaluate the thermo-oxidative stability and flammability of wood/polypropylene composites. The composites were obtained by extrusion and compression moulding with chemical modification of wood in order to improve adhesion. The composites were characterised by differential scanning calorimetry and cone calorimetry, providing such parameters as the oxidation induction time and a few parameters describing flammability, e.g. time to ignition, heat release rate, mass loss rate, heat of combustion, specific extinction area and emission of toxic gases. The results illustrate a considerable effect of the presence of wood and chemical modifications of lignocellulosic filler on the thermo-oxidative stability and character of combustion of the composites studied. The information provided in the paper contributes towards the correct choice of chemical modification of wood that would improve mechanical properties of the composites and towards getting composite materials of target thermo-oxidative stability and flammability.

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Section: Oxidation Induction Timementioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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The thermo-oxidative stability and flammability of wood/polypropylene composites

Borysiak

2014

J Therm Anal Calorim

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“…The recyclability of natural fibers composite materials is important for maintaining this material as a sustainable product, even after its end of life. Therefore, some works in the literature have considered this approach in composite material development and studies [11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

“…Although this process typically results in excessive breakdown and thermal degradation, the use of additives prevented these outcomes. In a recent work that used lignin as an additive in polypropylene/coir composites, the authors also concluded that the additive incorporation did not decrease the mechanical strength 11 . The influence of thermal stabilizers as additives in composites was recently studied by Hamad et al 16 .…”

mentioning

confidence: 99%

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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Novel Lignin‐Based Materials as Products for Various Applications

Kłapiszewski

Jesionowski

2017

Handbook of Composites From Renewable Materials

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Lignin as additive in polypropylene/coir composites: Thermal, mechanical and morphological properties

Cited by 211 publications

References 17 publications

The thermo-oxidative stability and flammability of wood/polypropylene composites

The thermo-oxidative stability and flammability of wood/polypropylene composites

The Recycling of Sugarcane Fiber/Polypropylene Composites

Novel Lignin‐Based Materials as Products for Various Applications

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