Novel sustainable biobased flame retardant from functionalized vegetable oil for enhanced flame retardancy of engineering plastic
作者： Boon Peng Chang , Suman Thakur , Amar K Mohanty , Manjusri Misra , None
DOI: 10.1038/S41598-019-52039-2
关键词:
摘要: The flame retardancy of an engineering plastic, poly(butylene terephthalate) (PBT), with a biobased retardant (FR) made from phosphorylated linseed oil (PLO) and downstream corn (PCO) was studied. Different phosphorus moieties were incorporated into the vegetable backbone through ring-opening reaction. chemical structure confirmed by Fourier-transform infrared (FTIR) nuclear resonance magnetic (NMR) spectroscopy. It found that incorporation only 7.5 wt% PLO sufficient to change UL-94 fire class PBT non-rating V-0. flame-retardancy mechanism PBT/PLO blends evaluated TGA-FTIR analysis. combined effects gas phase dripping tendency aided retard propagation effectively. As synthesized PCO contained high free fatty acids, acid-ester exchange reaction occurred in form oligomers during ignition. result, blend dripped immediately drips carried all heat prevent fire. This work suggests this sustainable FR could be desirable alternative halogen-based FRs for other polymers develop more environmentally friendly products various future applications.
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