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Halogen-Free Flame Retarded Poly(Lactic Acid) with an Isosorbide-Derived Polyphosphonate

Wenwen Guo1,2,3, Wei Cai3, Dong Wang1, Junling Wang4, Xiefei Zhu5,*, Bin Fei2,*
1 Key Laboratory of Eco-Textiles, Ministry of Education, College of Textile Science and Engineering, Jiangnan University, Wuxi, 214122, China
2 Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China
3 State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230026, China
4 Jiangsu Key Laboratory of Hazardous Chemicals Safety and Control, College of Safety Science and Engineering, Nanjing Tech University, Nanjing, 211816, China
5 Department of Thermal Science and Energy Engineering, University of Science and Technology of China, Hefei, 230026, China
* Corresponding Authors: Bin Fei. Email: ; Xiefei Zhu. Email:
(This article belongs to this Special Issue: Bio-based Halogen-free Flame Retardant Polymeric Materials)

Journal of Renewable Materials 2022, 10(7), 1875-1888.

Received 19 August 2021; Accepted 15 October 2021; Issue published 07 March 2022


Fabrication of flame retardants from renewable biomass has aroused extensive interest over the past decade. This work reported a synthesis of isosorbide-derived polyphosphonate (PICPP) as an anti-flammable agent for poly (lactic acid) (PLA). The presence of PICPP notably declined the storage modulus of PLA/PICPP owing to the declined molecular weight of PLA catalyzed by the presence of PICPP. PLA and PLA/PICPP thermally degraded in one stage under either air or nitrogen atmosphere. With increasing the amount of PICPP, the onset thermal decomposition temperature of PLA/PICPP was decreased gradually, owing to the earlier decomposition of PICPP. With only 10 wt% of PICPP, PLA/PICPP-10 achieved a high limiting oxygen index of 30.0% and UL-94 V-0 classification, manifesting that PICPP was an efficient anti-flammable agent for PLA. The inclusion of 15 wt% PICPP also caused 33% and 16% decline in PHRR and THR of PLA, respectively. TG-IR results clarified that PLA/PICPP produced the less typical pyrolysis products especially flammable carbonyls than PLA, which may account for the suppressed PHRR and THR values of PLA/PICPP.


Isosorbide; polyphosphonate; poly(lactic acid); flame retardancy

Cite This Article

Guo, W., Cai, W., Wang, D., Wang, J., Zhu, X. et al. (2022). Halogen-Free Flame Retarded Poly(Lactic Acid) with an Isosorbide-Derived Polyphosphonate. Journal of Renewable Materials, 10(7), 1875–1888.

This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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