Synergistic effect of different nanoparticles on flame retardant poly(lactic acid) with bridged DOPO derivative | Zendy

Long Lijuan | Zendy; Yin Jingbo | Zendy; He Wentao | Zendy; Xiang Yushu | Zendy; Qin Shuhao | Zendy; Yu Jie | Zendy

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Synergistic effect of different nanoparticles on flame retardant poly(lactic acid) with bridged DOPO derivative

Author(s) -

Long Lijuan,

Yin Jingbo,

He Wentao,

Xiang Yushu,

Qin Shuhao,

Yu Jie

Publication year - 2019

Publication title -

polymer composites

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.577

H-Index - 82

eISSN - 1548-0569

pISSN - 0272-8397

DOI - 10.1002/pc.24791

Subject(s) - materials science , fire retardant , limiting oxygen index , nanoparticle , char , zinc borate , scanning electron microscope , composite material , combustion , montmorillonite , lactic acid , rheology , chemical engineering , organic chemistry , nanotechnology , chemistry , biology , bacteria , engineering , genetics

This study aimed to examine synergistic effect of nanoparticles including nano silica (SiO 2 ), organic montmorillonite (OMMT) and zinc borate (ZnB) on flame retardant poly(lactic acid) (PLA) composites containing a phenethyl‐bridged 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide derivative (DiDOPO). 2% was the optimal addition content for these nanoparticles in PLA/DiDOPO composites, and nano SiO 2 showed higher limiting oxygen index value (27.0%) than OMMT (25.8%) and ZnB (26.5%) at the same content. When compared with that of PLA/DiDOPO, the peak heat release rate was decreased dramatically after introducing nanoparticles, and the smoke was significant suppressed by adding SiO 2 . Among these nanoparticles, SiO 2 had an obvious enhancement in the thermal stabilities of PLA composites both under nitrogen and air conditions resulting from its barrier effect. Moreover, a compact char was formed after combustion for PLA/DiDOPO/SiO 2 . In addition, high‐resolution electron microscope and rheology results showed that SiO 2 had a well dispersive quality in PLA/DiDOPO composites. Consequently, SiO 2 shows the best synergistic effect with DiDOPO toward improving the flame retardancy of PLA. POLYM. COMPOS., 40:1043–1052, 2019. © 2018 Society of Plastics Engineers

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