<正>Preparation for Glycine-Mg/Al-Layered dou-ble hydroxide(LDH-G)/PVA nanocompositeswas carried out via exfoliation-adsorption routebased on exfoliation of LDH-G in formamide.Theeffect of ultrasonic treatment on the fabrication ofLDH-G/PVA nanocomposites was investigated,and the thermal stability of PVA containing the na-no-scale dispersed LDH-G was analyzed.The re-sults of XRD suggest that chains of PVA with double