Synthesis and Characterization of P-PPD-Ph-Conjugated Flame Retardant

Junzhuo Sun; Daohai Zhang; Ke Wei; Fang Tan; Min He; Dongmei Bao; Shuhao Qin

doi:10.3389/fchem.2022.956322

Synthesis and Characterization of P-PPD-Ph-Conjugated Flame Retardant

Front Chem. 2022 Jul 18:10:956322. doi: 10.3389/fchem.2022.956322. eCollection 2022.

Authors

Junzhuo Sun^{1

2}, Daohai Zhang^{1

2

3}, Ke Wei³, Fang Tan^{1

2}, Min He³, Dongmei Bao¹, Shuhao Qin^{1

3}

Affiliations

¹ School of Chemical Engineering of Guizhou Minzu University, Guiyang, China.
² Polymer Composites Engineering Research Center of Guizhou Minzu University, Guiyang, China.
³ National Engineering Research Center for Compounding and Modification of Polymer Materials, Guiyang, China.

Abstract

The conjugated flame retardants have rarely been studied. A conjugate flame-retardant 4, 4'-{1″, 4″-phenylene-bis [amino- (10‴-oxy10‴-hydro-9‴-hydrogen- 10‴λ⁵-phosphaphenanthrene-10″-yl)-methyl]}-diphenol (P-PPD-Ph) was synthesized and added into the polylactic acid (PLA) matrix. The P-PPD-Ph-conjugated flame-retardant structure was tested by FTIR, ¹H, and ³¹P NMR analysis. The thermal and rheological properties of PLA/P-PPD-PH-conjugated flame-retardant composites were investigated. The results showed that P-PPD-Ph-conjugated flame retardant affects PLA/P-PPD-PH-conjugated flame-retardant composites for promoting the formation of a carbon layer when the P-PPD-Ph-conjugated flame-retardant content was 15% and the residual carbon ratio for PLA/P-PPD-PH-conjugated flame-retardant composites increased by 4.2%.

Keywords: conjugated flame retardant; poly(lactic acid); rheological properties; structure; thermal performance.