Polymers of vinylphosphonic acid, acrylonitrile, and methyl acrylate and their nanofibers

Abstract

In this study, a small amount of vinylphosphonic acid was used to produce fire‐retardant copolymers and terpolymers from acrylonitrile and methyl acrylate. The structures of copolymer and terpolymers were elucidated by 1H‐NMR and phosphorous analysis. Thermal decomposition of vinylphosphonic acid‐containing copolymers and terpolymers started at lower temperatures than of poly(acrylonitrile‐co‐methyl acrylate). Methyl acrylate contributes to the thermal resistance of the terpolymers. Poly(acrylonitrile‐co‐methyl acrylate‐co‐vinylphosphonic acid) with a phosphorous content about 0.25% burned at a slower rate and emitted less smoke compared to poly(acrylonitrile‐co‐methyl acrylate). The burning tests showed that both copolymer and terpolymers containing vinylphosphonic acid behaved as a fire‐retardant polymer. The phosphonate and phosphonic acid groups in the copolymer and terpolymers accelerate the cyclization of nitrile groups and inhibit the fire in the gas phase. Nanofibers were successfully produced by the electrospinning method from the copolymers and terpolymers containing vinylphosphonic acid moiety.

Cement Slurry Design for High-Pressure, High-Temperature Wellbores Using Polymer Nanocomposite: A Laboratory Scale Study Based on the Compressive Strength and Fluid Loss

“…Different functional groups and metal oxides present in the nanocomposite were analyzed. The peaks appearing at ∼1646.88 and ∼1160.7 cm –1 are due to the P–O–H and PO stretching bands of VPA, respectively . The stretching vibration peak of the sulfite (−SO 3 ) group of AMPS can be seen at ∼1382.82 cm –1 , and the methyl (−CH 3 ) group peak of DMAPMA is at ∼2974.33 cm –1 .…”

“…The peaks appearing at ∼1646.88 and ∼1160.7 cm −1 are due to the P−O−H and PO stretching bands of VPA, respectively. 47 The stretching vibration peak of the sulfite (−SO 3 ) group of AMPS can be seen at ∼1382.82 cm −1 , and the methyl (−CH 3 ) group peak of DMAPMA is at ∼2974.33 cm −1 . 48 The spectra band at ∼1670 cm −1 can be attributed to the CONH 2 group of AM in the polymer nanocomposite.…”

New Copolymers of Vinylphosphonic Acid with Hydrophilic Monomers and Their Eu3+ Complexes

“…The aim of this work was to develop synthetic methods to prepare and study novel original copolymers of VPA with 2-deoxy-2-methacrylamido-D-glucose (MAG) and 4-acryloylmorpholine (4-AM), with varied compositions and molecular masses; to prepare VPA copolymers with acrylamide (AA) (Figure 1); and to estimate the ability of the synthesized copolymers to form luminescent complexes with Eu 3+ ions, and examine the photophysical properties of such complexes. The random double and triple copolymers of VPA with methyl acrylate, acrylonitrile [15], acrylic and methacrylic acids [4,16], acrylamide [17], styrene [18], N-vinylpyrrolidone [19], N-vinylimidazole [20], etc., are known. The graft and block copolymers of VPA have been synthesized [2,3,21].…”

Flame retardance enhancement of polyacrylonitrile with dimethyl vinylphosphonate

“…Phosphorus‐containing compounds are considered as an alternative for halogenous compounds 14–16 . Some vinylphosphonate derivatives in some publications have been used as flame‐retardant element by incorporating into PAN chains: Vinylphosphoinc acid was incorporated in PAN chains, and the copolymer burned at a slow rate and emitted less smoke 17 . Ebdon et al 18,19 designed several PAN copolymers derived from the copolymerization of phosphorus‐containing compounds and acrylonitrile.…”

“…[14][15][16] Some vinylphosphonate derivatives in some publications have been used as flame-retardant element by incorporating into PAN chains: Vinylphosphoinc acid was incorporated in PAN chains, and the copolymer burned at a slow rate and emitted less smoke. 17 Ebdon et al 18,19 designed several PAN copolymers derived from the copolymerization of phosphoruscontaining compounds and acrylonitrile. Nevertheless, more than 23 wt% vinylphosphonate compounds were required to copolymerize into PAN chains to acquire the result of LOI test of 26.9%.…”