Tags

Type your tag names separated by a space and hit enter

Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends.
Polymers (Basel). 2019 Jan 21; 11(1)P

Abstract

In this study, two different types of industrial lignin (i.e., lignosulphonate lignin (LL) and kraft lignin (DL)) were exploited as charring agents with phosphorus-based flame retardants for polyamide 11 (PA11). The effect of lignins on the thermal stability and fire behavior of PA11 combined with phosphinate additives (namely, aluminum phosphinate (AlP) and zinc phosphinate (ZnP)) has been studied by thermogravimetric analysis (TGA), UL 94 vertical flame spread, and cone calorimetry tests. Various blends of flame retarded PA11 were prepared by melt process using a twin-screw extruder. Thermogravimetric analyses showed that the LL containing ternary blends are able to provide higher thermal stability, as well as a developed char residue. The decomposition of the phosphinates led to the formation of phosphate compounds in the condensed phase, which promotes the formation of a stable char. Flammability tests showed that LL/ZnP ternary blends were able to achieve self-extinction and V-1 classification; the other formulations showed a strong melt dripping and higher burning. In addition to this, cone calorimetry results showed that the most enhanced behavior was found when 10 wt % of LL and AlP were combined, which strongly reduced PHRR (-74%) and THR (-22%), due to the interaction between LL and AlP, which not only promotes char formation but also confers the stability to char in the condensed phase.

Authors+Show Affiliations

Politecnico di Torino, Dept. of Applied Science and Technology, 15121 Alessandria, Italy. neeraj-kumar.mandlek@ensait.fr. ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France. neeraj-kumar.mandlek@ensait.fr. College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China. neeraj-kumar.mandlek@ensait.fr.ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France. aurelie.cayla@ensait.fr.ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France. francois.rault@ensait.fr.ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France. stephane.giraud@ensait.fr.ENSAIT, GEMTEX-Laboratoire de Génie et Matériaux Textiles, F-59000 Lille, France. fabien.salaun@ensait.fr.College of Textile and Clothing Engineering, Soochow University, Suzhou 215123, China. guanjinping@suda.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30960166

Citation

Mandlekar, Neeraj, et al. "Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends." Polymers, vol. 11, no. 1, 2019.
Mandlekar N, Cayla A, Rault F, et al. Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends. Polymers (Basel). 2019;11(1).
Mandlekar, N., Cayla, A., Rault, F., Giraud, S., Salaün, F., & Guan, J. (2019). Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends. Polymers, 11(1). https://doi.org/10.3390/polym11010180
Mandlekar N, et al. Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends. Polymers (Basel). 2019 Jan 21;11(1) PubMed PMID: 30960166.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Valorization of Industrial Lignin as Biobased Carbon Source in Fire Retardant System for Polyamide 11 Blends. AU - Mandlekar,Neeraj, AU - Cayla,Aurélie, AU - Rault,François, AU - Giraud,Stéphane, AU - Salaün,Fabien, AU - Guan,Jinping, Y1 - 2019/01/21/ PY - 2018/11/23/received PY - 2019/01/04/revised PY - 2019/01/16/accepted PY - 2019/4/10/entrez PY - 2019/4/10/pubmed PY - 2019/4/10/medline KW - Polyamide 11 KW - fire retardancy KW - industrial lignin KW - phosphinate KW - thermal decomposition JF - Polymers JO - Polymers (Basel) VL - 11 IS - 1 N2 - In this study, two different types of industrial lignin (i.e., lignosulphonate lignin (LL) and kraft lignin (DL)) were exploited as charring agents with phosphorus-based flame retardants for polyamide 11 (PA11). The effect of lignins on the thermal stability and fire behavior of PA11 combined with phosphinate additives (namely, aluminum phosphinate (AlP) and zinc phosphinate (ZnP)) has been studied by thermogravimetric analysis (TGA), UL 94 vertical flame spread, and cone calorimetry tests. Various blends of flame retarded PA11 were prepared by melt process using a twin-screw extruder. Thermogravimetric analyses showed that the LL containing ternary blends are able to provide higher thermal stability, as well as a developed char residue. The decomposition of the phosphinates led to the formation of phosphate compounds in the condensed phase, which promotes the formation of a stable char. Flammability tests showed that LL/ZnP ternary blends were able to achieve self-extinction and V-1 classification; the other formulations showed a strong melt dripping and higher burning. In addition to this, cone calorimetry results showed that the most enhanced behavior was found when 10 wt % of LL and AlP were combined, which strongly reduced PHRR (-74%) and THR (-22%), due to the interaction between LL and AlP, which not only promotes char formation but also confers the stability to char in the condensed phase. SN - 2073-4360 UR - https://www.unboundmedicine.com/medline/citation/30960166/Valorization_of_Industrial_Lignin_as_Biobased_Carbon_Source_in_Fire_Retardant_System_for_Polyamide_11_Blends_ L2 - http://www.mdpi.com/resolver?pii=polym11010180 DB - PRIME DP - Unbound Medicine ER -
Try the Free App:
Prime PubMed app for iOS iPhone iPad
Prime PubMed app for Android
Prime PubMed is provided
free to individuals by:
Unbound Medicine.