The p-Toluenesulfonate intercalation layered double hydrotalcites was synthesized by using co-precipitation method.The products were charactered with XRD、FT-IR、TG and DSC.The results indicated that LDH-PTS were pure and 2:1 type LDH-PTS have better crystallinity than 3:1 type LDH-PTS.And layered structure of 2: 1 type LDH-PTS gradually destroyed between 450 ～500oC , but layered structure of 3:1 type LDH-PTS gradually destroyed between 400 ～460oC.The successful preparation of LDHPTS implied the polymer/LDH composites had the wonderful research prospect.
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