An investigation of thermal degradation and charring of larch lignin in the condensed phase: the effects of boric acid, guanyl urea phosphate, ammonium dihydrogen phosphate and ammonium polyphosphate

Li, Bin; Zhang, Xiucheng; Su, Runzhou

doi:10.1016/s0141-3910(01)00202-6

Cited by 39 publications

(22 citation statements)

References 10 publications

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“…Blends start to decompose earlier due the degradation of lignin which generates a slight weight loss between 200 and 350 C. The char yields are quasi equivalent whatever the phosphorous compound used for the surface modification of lignin. Thus, it can be concluded that phosphorus treatment does not induce any additional charring, consistently with what was obtained by Li et al in the case of larch lignin treated with dihydrogen ammonium phosphate [22]. Similar conclusions can be drawn from PCFC test on the same samples (see Table 5).…”

Section: Influence Of Phosphorous Grafting Onto Ligninsupporting

confidence: 89%

Chemical modification of lignin by phosphorus molecules to improve the fire behavior of polybutylene succinate

Ferry

Dorez

Taguet

et al. 2015

Polymer Degradation and Stability

128

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a b s t r a c tLignin was used as flame retardant for polybutylene succinate (PBS) biopolyester. Lignin was first demonstrated to weakly contribute to material flammability due to a high charring ability and a low heat release when burning. Alkali lignin was proved to be more interesting than organosolv lignin due to the release of sulfur dioxide during decomposition. When incorporated at a 20%wt loading in PBS, alkali lignin significantly reduces pHRR and promotes a thick charring behavior. Alkali lignin was successfully surface modified by grafting molecular or macromolecular phosphorous compounds. When blended with PBS, modified lignin was highlighted to further increase the barrier effect. Char promotion is accelerated and the resulting charred layer exhibits a higher cohesivity. Modified lignin appears as an interesting biobased flame retardant component.

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Section: Influence Of Phosphorous Grafting Onto Ligninsupporting

confidence: 89%

Chemical modification of lignin by phosphorus molecules to improve the fire behavior of polybutylene succinate

Ferry

Dorez

Taguet

et al. 2015

Polymer Degradation and Stability

128

View full text Add to dashboard Cite

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“…Lignin has the advantage of being a bio-based compound and can be effectively used as carbon source for the design of intumescent systems in combination with other flame retardant additives. Owing to the presence of highly aromatic structure lignin is able to produce a large amount of char residue upon heating at elevated temperature [12,51], which reduces the combustion heat and heat release rate (HRR) of polymeric materials and thus enhances the fire retardancy. All forthcoming reviewed study have demonstrated that lignin-based intumescent could be a worthy alternative that represents a great advantage in comparison with the other proposed fire retardant system.…”

Section: Fire Retardant Applications In Polymer Compositementioning

confidence: 99%

“…It is investigated that the presence of lignin can effectively reduce the flammability of polymers such as polypropylene, PBS, ABS, PET, etc. Further, it is reported that thermal degradation of lignin generates very high amounts of char, around 35-40% [12]. It is well known that the ability to form char during the thermal degradation is a basic aspect of flame retardant intumescent systems.…”

Section: Introductionmentioning

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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“…The high charring tendency of lignins during combustion [27] make them potential substitutes of traditional fire suppressors. Their use in this field dates back to the eighties [28]; however, over the years, much more interest has been devoted to lignin rather than lignosulfonates, and the potentiality of the latter in fire retardancy has not been fully explored yet.…”

Section: Introductionmentioning

confidence: 99%

Lignosulfonates as Fire Retardants in Wood Flour-Based Particleboards

Angelini

Barrio

Cerruti

et al. 2019

International Journal of Polymer Science

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Wood flour particleboards (WFP), like other wood-based items, require the addition of fire retardants (FRs) to reduce their high flammability. In this work, a waste lignosulfonate (CaLS) from paper mill is used as a low-cost FR to reduce WFP flammability. CaLS is purified by dialysis and the dialysed lignosulfonate (LD) is used, alone or combined with ammonium polyphosphate (APP), as a FR additive in the preparation of urea-formaldehyde WFP. The fire behaviour of the modified WFPs is studied by cone calorimetry. The use of 15 wt.% LD reduces the peak of heat release rate (HRR) and total smoke production by 25%, also increasing char formation. HRR peak is further reduced up to 40%, if APP is introduced in the formulation. This work discloses a viable and cost-effective strategy for improving the fire retardancy performance of WFP by partial replacement of a commercial FR with a fully renewable additive, isolated through a green and cost-effective process.

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An investigation of thermal degradation and charring of larch lignin in the condensed phase: the effects of boric acid, guanyl urea phosphate, ammonium dihydrogen phosphate and ammonium polyphosphate

Cited by 39 publications

References 10 publications

Chemical modification of lignin by phosphorus molecules to improve the fire behavior of polybutylene succinate

Chemical modification of lignin by phosphorus molecules to improve the fire behavior of polybutylene succinate

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

Lignosulfonates as Fire Retardants in Wood Flour-Based Particleboards

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