Reaction of cellulose phosphonate with N‐vinyl‐2‐pyrrolidone and flame‐retardant properties of the product

Abstract

The reaction of cellulose phosphonate and N‐vinyl‐2‐pyrrolidone in ethanol in the presence of sodium ethoxide was investigated and thermal stabilities and flame‐retardant properties for cellulose phosphonate modified with N‐vinyl‐2‐pyrrolidone were discussed. The results in this study point out the following important aspects of flame retardation of cellulose fabrics: (1) The reaction of cellulose phosphonate and N‐vinyl‐2‐pyrrolidone in the presence of sodium ethoxide results in graft polymerization of N‐vinyl‐2‐pyrrolidone at PH sites in cellulose phosphonate; an average chain length of the graft polymer is about five units of vinylpyrrolidone. (2) The graft polymerization of N‐vinyl‐2‐pyrrolidone can improve both stabilities, especially the flame‐retardant properties of cellulose fabrics. (3) Amides, whether noncyclic or cyclic, are suitable for nitrogen compounds that can effectively operate as synergists.

Phosphorylation of bio-based compounds: the state of the art

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Structure and properties of tin‐containing polymers deposited from tetramethyltin HF plasma

“…Valves [l] and [2] permitted the isolation of volatile compounds under vacuum conditions and a chromatography-type septum [3] assured the proper sampling for gas chromatography-mass spectrometry (GC-MS) analysis by means of a Hamilton gas syringe. The outer diameter (6 mm) of the connecting stainless steel tubing [5], matched the dimensions of the connection of the inlet line of the high-resolution (HR) MS, providing vacuum-proof connecting possibilities.…”

Graft copolymers of hydroxyethyl cellulose by a ‘grafting to’ method:15N labelling as a powerful characterisation tool in ‘click’ polymer chemistry

“…"Grafting from" is commonly used, where synthetic polymer chains are grown from sites on the cellulose backbone. The cellulose backbone can be activated via a range of processes including single electron transfer 14 , hydrogen abstraction 15,16 , irradiation 17,18 or other methods 8,12,19 . From the resulting macro-initiator sites, polymer chains can be grown producing the graft copolymer.…”