Natural molecules as PIN FRs for PE and PP
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A PhD submission tests different bio sourced molecules as FRs or polypropylene (PP) and polyethylene (PE), including tannic acid, ammonium or sodium alginate (derived from seaweed), fish gelatin, carrageenan, in combinations or with PIN flame retardants.
Issues noted included water uptake by biomolecules, foaming it in the processing and deterioration of polymer properties. However, fish gelatin, with sorbitol and/or tannic acid enabled UL94-V0 in PP and ignition retarding of LDPE.
“Using nature as a way to flame retard synthetic materials”, T. Deans, PhD submission, Case Western Reserve University, May 2017 http://rave.ohiolink.edu/etdc/view?acc_num=case149154227971565