介绍了聚乳酸／层状硅酸盐纳米复合材料研究进展，阐述了其制备方法如原位聚合插层法、溶液插层法、熔融插层法等，详述了聚乳酸添加纳米层状硅酸盐后结构与性能的变化，包括复合材料的微观结构、结晶性能、热性能、力学性能、流变性能、加工性能、阻隔性能、阻燃性能的变化。研究表明，采用不同的制备方法如原位聚合插层法、溶液插层法、熔融插层法等能制得插层型、剥离型以及插层与剥离混合型聚乳酸／层状硅酸盐纳米复合材料；添加纳米层状硅酸盐后，得到的聚乳酸／层状硅酸盐纳米复合材料结晶速率提高，结晶度增加，说明层状硅酸盐起到了成核剂的作用；热稳定性、拉伸模量和冲击强度、阻透性能和阻燃性能都有不同程度提高；流变性能也得到改善。%Research advances in the preparation and properties of poiy (lactic acid ) /layered silicate nanocomposites were introduced. Details on preparation technologies of poly(lactic acid) /layered silicate nanocomposites such as intercalation from solution, in-situ intercalative polymerization, melt intercalation technique, and their properties such as morphologies, crystallization behavior, thermal performance, mechanical properties, rheological behavior, processing ability, barrier performance and flame retardance, etc. It was shown that poly(lactie acid)/layered silicate nanocomposites with interealative or/and exfoliated structure by the three preparation processes were made respectively. Their properties, including crystallization rate and degree, thermal stability, tensile modulus and impact strength, gas barrier and flame retardance, as well as rheological behavior were improved.
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