Novel approach to the chemical modification of poly(vinyl alcohol): Phosphorylation

Abstract

The chemical modification of poly(vinyl alcohol) (PVA) was performed through oxidation followed by nucleophilic addition. PVA was oxidized by KMnO4 to form vinyl ketone units along the polymer backbone. The chemical modification of PVA was then conducted through the reaction of the carbonyl group of the vinyl ketone unit with 9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DOPO) as a nucleophile. Through this approach, the phosphorous DOPO group was attached onto the carbon atom of the polymer main chain rather than onto the pendent hydroxyl groups of PVA. The formed DOPO‐containing PVA showed improved thermal stability, organosolubility, and flame retardance. © 2003 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 41: 1107–1113, 2003

Synthesis of poly(1‐oxodimethylene) via oxidation of poly(vinyl alcohol) with a hydrogen peroxide/hydrobromic acid system and metal complexation behavior of poly(1‐oxodimethylene)

“…Structural analysis of poly(1‐oxodimethylene) was conducted by FT‐IR spectroscopy based on the spectral data in the literature (Fig. ) . We also performed a more detailed structural analysis of poly(1‐oxodimethylene) by 13 C‐CPMAS NMR spectroscopy (Fig.…”

“…1). 33,34 We also performed a more detailed structural analysis of poly(1-oxodimethylene) by 13 C-CPMAS NMR spectroscopy (Fig. 2).…”

Dopamine‐functionalized poly(vinyl alcohol) elastomer with melt processability and self‐healing properties

“…This severely limits the wider applications of PVA. In recent decades, many efforts have been devoted to the production of melt‐processable PVA by plasticization, blending, and chemical modification . For example, when 40‐phr glycerin, the most commonly used plasticizer, is added to the PVA matrix, the T m of PVA decreases about 170 °C, and this makes PVA melt processable .…”

“…In recent decades, many efforts have been devoted to the production of melt-processable PVA by plasticization, 7,8 blending, [9][10][11] and chemical modification. [12][13][14][15][16] For example, when 40-phr glycerin, the most commonly used plasticizer, is added to the PVA matrix, the T m of PVA decreases about 170 8C, and this makes PVA melt processable. 17 However, the PVA product normally contains water, and the mechanical properties are not so good.…”

Facile approach to functionalizing polymers with specific chemical groups by an ozone treatment: Preparation of crosslinkable poly(vinylidene fluoride) possessing benzoxazine pendent groups

“…1 For polymers with reactive groups in the main chains, such as poly(vinyl alcohol) [2][3][4] and chitosan, [5][6][7] polymer modification can be easily done with polymer reactions. Electrophilic aromatic substitution reactions have also been widely applied to the modification of polymers possessing aromatic groups in repeating units.…”