Influence of the lignin on thermal degradation and melting behaviour of poly(ethylene terephthalate) based composites

Canetti, Maurizio; Bertini, Fabio

doi:10.1515/epoly.2009.9.1.596

Cited by 16 publications

(12 citation statements)

References 23 publications

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“…The study reported by Canetti and Bertini 190 showed that the high thermal stability of PET was compromised in a composite containing 20% (w/w) hydrolytic lignin. However, the authors also showed that when the thermal stability was examined in an atmosphere of air the lignin was oxidized to form a carbon rich char coating on the composite material.…”

Section: Lignin Synthetic Polymer Compositesmentioning

confidence: 99%

Thermal properties of lignin in copolymers, blends, and composites: a review

2015

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The need for renewable alternatives to conventional petroleum based polymers has been the motivation for work on biobased composites, blends and materials whose foundations are carbon neutral feedstocks. Lignin, an abundant plant derived feedstock, and waste byproduct of the cellulosic ethanol and pulp and paper industry, qualifies as a renewable material. Despite the fact that it is often difficult to blend lignin with other polymers due to its complex structure and reactivity, published research over the past decade, has focused on issues such as lignin miscibility with other polymers, the thermal and mechanical strength behavior of its copolymers and its fractions as well as efforts of tuning its thermal properties via chemical modifications and other means. As such this effort now attempts to offer a comprehensive overview that largely discusses the importance of these processes with the aim toward effective, cost efficient and environmentally friendly means that may allow the utilization of this important and largely ignored biopolymer.

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Section: Lignin Synthetic Polymer Compositesmentioning

confidence: 99%

Thermal properties of lignin in copolymers, blends, and composites: a review

2015

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“…The in situ reactive compatibilization with SEBS-g-MA also contributes protective char layer formation. Thermal degradation and melting behaviour of PET was investigated by Canetti and Bertini [56]. Hydrolytic lignin was directly blended with PET thermoplastic using a single screw extruder.…”

Section: Lignin-based Intumescence In Synthetic Polymersmentioning

confidence: 99%

An Overview on the Use of Lignin and Its Derivatives in Fire Retardant Polymer Systems

Mandlekar¹,

Cayla²,

Rault³

et al. 2018

Lignin - Trends and Applications

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Lignin is a highly abundant bio-polymeric material that constitutes cellulose one of major component in cell wall of woody plants. Alternatively, large quantity of lignin is yearly available from numerous pulping and paper industries; this is the key point that justifies its large use for industrial applications. Lignin could be one of the most essential and sustainable bio-resources as raw material for the development of environmentally friendly polymer composite. Owing to its huge chemical structure, lignin can provide additional functionality such as filler, reinforcing agent, compatibilizer, stabilizer, etc. In this study, the fire retardant functionality of lignin has been employed in polymeric materials. Due to high charring capability, lignin is effectively used as carbon source in combination with other flame retardants for designing the intumescent system for polymeric materials. Further in this, several articles related to lignin-based intumescent are reviewed and interesting work formulation as well as meaningful results achieved in the flame retardancy are discussed. More attention is given to the studies concerning the use of current intumescent systems for textile applications by means of coating on fabric/nonwoven and melt blending in bulk polymers.

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“…Up to now, few studies have been published on the fire behavior of polymers containing lignin without flame retardant compounds. In this context, Canetti et al used lignin in polypropylene (PP) and polyethylene terephthalate (PET). , An increase in PP thermal degradation temperature with increasing lignin content was observed and attributed to the interactions occurring between PP and lignin, which lead to the formation of protective surface layer. In the case of PET, lignin was found to affect the overall crystallization of the polymer due to nucleating effect.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stability and Fire Retardant Properties of Polyamide 11 Microcomposites Containing Different Lignins

Mandlekar

Cayla

Rault

et al. 2017

Ind. Eng. Chem. Res.

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This study investigates the influence of various lignins and their content on the thermal stability and fire retardancy of biobased polyamide 11 (PA). Microcomposites based on PA and containing 5, 10, 15, and 20 wt % different lignins were prepared with a twin-screw extruder. Morphological analysis showed good interfacial interaction and uniform distribution of lignin particles within the resulting microcomposites. Further, thermogravimetric analyses carried out in inert atmosphere indicated that, unlike kraft lignin, which is able to give rise to the formation of lower char residue (41–48 wt % at 600 °C), the sulfonated counterpart provides a higher thermal stability as well as a higher char residue (55–58 wt %). Furthermore, vertical flame spread tests clearly showed that 15 wt % is the optimum of kraft or sulfonated lignin loading to achieve improved flame retardant properties and a V1 rating. In addition, a cone calorimeter was exploited to study forced combustion behavior; in particular the microcomposites containing sulfonated lignin revealed significant reductions of the peak of the heat release rate (−51%) and of the total heat release (−23%) and a lower average mass loss rate together with a noticeable increase of the final residual mass (about 9 wt %). Conversely, the microcomposites containing kraft lignins showed opposite effect, since heat release rate (HRR) and total heat release (THR) values increased in the presence of kraft lignin.

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Influence of the lignin on thermal degradation and melting behaviour of poly(ethylene terephthalate) based composites

Cited by 16 publications

References 23 publications

Thermal properties of lignin in copolymers, blends, and composites: a review

Thermal properties of lignin in copolymers, blends, and composites: a review

An Overview on the Use of Lignin and Its Derivatives in Fire Retardant Polymer Systems

Thermal Stability and Fire Retardant Properties of Polyamide 11 Microcomposites Containing Different Lignins

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