In this section, you can access to the latest technical information related to the FUTURE project topic.

Synthesis of anhydrous manganese hypophosphite microtubes for simultaneous flame retardant and mechanical enhancement on poly(lactic acid)

In this study, a facile solvothermal approach for preparing anhydrous manganese hypophosphite (A-MnHP) microtubes was demonstrated for the first time by using manganese chloride and hypophosphorous acid in mixed solvents, followed by fabricating A-MnHP-based poly(lactic acid) (PLA) composites via a melt-blending method. Owing to the unique morphology of A-MnHP, the tensile strengths of the PLA composites with 1?wt%, 5?wt% and 10?wt% A-MnHP are approximately 17%, 7% and 3% higher than those of neat PLA, respectively. Compared to neat PLA, PLA composite containing 15?wt% A-MnHP (PLA/A-MnHP15) exhibited lower peak heat release rate (50% reduction), total heat release (13% reduction), peak CO2 and CO productions (50% and 53% reductions), which also passed UL 94 V-2 rating test with high limiting oxygen index (27.5%). The combustion temperature change during the cone calorimeter tests showed that PLA/A-MnHP15 showed the lowest combustion temperature, achieving the best fire safety performance. Residue analysis indicated that the presence of A-MnHP resulted in the formation of continuous and compact char residues composed of aromatic structure and phosphorous-rich inorganic structure, retarding the permeation of heat, oxygen transfer and escape of volatile degradation products.

» Author: Wei Yang, Wen-Jie Yang, Benjamin Tawiah, Yang Zhang, Li-Li Wang, San-E Zhu, Timothy Bo Yuan Chen, Anthony Chun Yin Yuen, Bin Yu, Yun-Feng Liu, Jing-Yu Si, En-Zhu Hu, Hong-Dian Lu, Kun-Hong Hu, Qing Nian Chan, Guan Heng Yeo

» Reference: Composites Science and Technology, Volume 164

» Publication Date: 18/08/2018

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