Properties and Mechanism of Flame Retardant Poly(Lactic Acid) Composites Containing Phosphaphenanthrene-Hydroxyl Phenyl Maleimide Derivative

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Polymer Science Pub Date : 2025-02-12 DOI:10.1002/pol.20241098

Lijuan Long, Xiang Nie, Xin Wang, Chunyan Shan, Shuhao Qin, Wei Gong, Fu Hai, Jie Yu

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Abstract

A derivative based on 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and maleimide units with terminal hydroxyl group (DH) was synthesized and incorporated in poly(lactic acid) (PLA). The properties and mechanism of PLA/DH composites were investigated. The results showed that PLA composites under 10 wt% DH load achieved vertical combustion test (UL-94) V-0 rating with an increased limiting oxygen index (LOI) of 27.2% and a 15.8% decrease in peak heat release rate. The prominent flame retardant efficiency of DH in PLA was attributed to its excellent flame inhibition and diluting effects in gaseous phase as well as a certain cross-linked structure in the condensed phase. Specifically, the elongation at break of PLA/DH-7.5 was increased by 17.6% in comparison to that of pure PLA. DH with terminal hydroxyl group displayed enhanced interaction and good compatibility with PLA, thus endowing good comprehensive performances to PLA. As a result, the combination of phosphaphenanthrene and maleimide units with terminal hydroxyl group provides a facile and effective method to improve the flame retardancy and mechanical properties of PLA.

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来源期刊

Journal of Polymer Science POLYMER SCIENCE-

CiteScore

6.30

自引率

5.90%

发文量

264

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.