Mechanochemical dechlorination of polyvinyl chloride with calcium sulfates

William Tongamp, Junya Kano, Kibu Chiyo, Fumio Saito

研究成果: Article査読

10 被引用数 (Scopus)


Polyvinyl chloride (PVC) was milled with hydrated or unhydrated calcium sulfates (CaSO4•2H2O or CaSO4) in air by using a planetary mill to investigate mechanochemical dechlorination behavior. The milling process resulted in size reduction and in the breaking of bonds leading to mechanically induced solid state reaction, forming CaCl2 and dechlorinated hydrocarbon with C=C double bonds in the product. Washing the milled mixtures with water at room temperature allowed removal of the chloride formed during milling, and more than 95% of the chlorine in PVC was removed from a mixture milled for 4 h. This process could offer a potential route for the handling and disposal of both PVC and gypsum wastes. H2S gas was generated during milling; more H2S was released from the unhydrated sample than from the hydrated sample.

ジャーナルJournal of Material Cycles and Waste Management
出版ステータスPublished - 2008 9月 1

ASJC Scopus subject areas

  • 廃棄物管理と処理
  • 材料力学


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