Influence of covalently bound phosphorus-containing groups on the flammability of poly(vinyl alcohol), poly(ethylene-co-vinyl alcohol) and low-density polyethylene
作者： Mavis Banks , John R. Ebdon , Michael Johnson
DOI: 10.1016/0032-3861(93)90163-5
关键词: Alcohol 、 Polyethylene 、 Chemistry 、 Polymer 、 Intumescent 、 Cellulose 、 Polymer chemistry 、 Low-density polyethylene 、 Vinyl alcohol 、 Organic chemistry 、 Fire retardant
摘要: Poly(vinyl alcohol) and ethylene-vinyl alcohol copolymers have been phosphorylated with H3PO4 H3PO3. The samples possess pendent phosphate phosphite groups are significantly more flame retardant than the unmodified materials. retardance arises in part from a condensed-phase mechanism involving dehydration, crosslinking intumescent char formation, similar to that observed when certain phosphorus-based additives used poly(vinyl alcohol), cellulose other highly hydroxylated polymers, vapour-phase mechanism. Low-density polyethylene can also be rendered extent by phosphonylation.
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