The effect of poly(vinyl bromide) on the layering of cotton fibers in flame‐retardant cotton/polyester blends

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Abstract
Cotton and cotton/polyester blends treated with phosphorus‐nitrogen polymers and poly‐(vinyl bromide) for flame retardance were examined in the electron microscope. A considerable amount of the poly(vinyl bromide) was retained by the cotton fibers. Expansion studies indicated that the poly(vinyl bromide) acted either as a morphologic adhesive or as a nonpolar matrix impervious to penetration by methacrylate before swelling.