Alkaline dechlorination of poly(vinyl chloride) in organic solvents under mild conditions

A mild alkaline hydrolysis of poly(vinyl chloride) (PVC) in an organic solvent was conducted with a satisfactory degree of dechlorination (DD). Under atmospheric pressure, a DD of 98–99% was accomplished in the hydrolysis with NaOH in dimethylsulfoxide at 80 °C for 1–3 h. The resulting hydrolysis pr...

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Bibliographic Details
Published inPolymer degradation and stability Vol. 86; no. 3; pp. 541 - 547
Main Authors Yoshinaga, Tetsutaro, Yamaye, Makoto, Kito, Taketoshi, Ichiki, Tomoyuki, Ogata, Masahiko, Chen, Jie, Fujino, Hiroshi, Tanimura, Toshifumi, Yamanobe, Takeshi
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.12.2004
Elsevier Science
Subjects
Alkaline hydrolysis of PVC
Applied sciences
Chemical recycling
Dechlorination in organic solvents
Exact sciences and technology
Mild conditions
Polymer industry, paints, wood
Technology of polymers
Waste treatment
Mild conditions
Alkaline hydrolysis of PVC
Chemical recycling
Dechlorination in organic solvents
Solvent effect
Waste treatment
Temperature effect
Chemical degradation
Experimental study
Hydrolysis
Organic solvent
Dechlorination
Basic medium
Kinetics
Recycling
Polyvinyl chloride
Plastic waste
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Summary:A mild alkaline hydrolysis of poly(vinyl chloride) (PVC) in an organic solvent was conducted with a satisfactory degree of dechlorination (DD). Under atmospheric pressure, a DD of 98–99% was accomplished in the hydrolysis with NaOH in dimethylsulfoxide at 80 °C for 1–3 h. The resulting hydrolysis product is poly(vinyl alcohol) with a very small chlorine content. Sodium chloride was the only by-product and no other harmful products such as dioxins were formed. Possible solvent recycling mainly depends on controlled use of water.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2004.06.008