【摘要】 测定聚乳酸中丙交酯的含量。采用毛细管气相色谱法,色谱系统为:AC20色谱柱;柱温150℃;载气为氮气;检测器为FID。在色谱条件下,测得丙交酯线性良好(γ>0.99);平均回收率为99.8%;RSD0.18%;最低检测限为3.413μg/mL,样品中丙交酯残留量符合要求。该方法灵敏、准确、可靠。更多还原

【Abstract】 To determine the contents of residual lactide in PLA.A Simple capillary gas chromatography method was established with FID detector.The capillary column was AC20 with 150℃;the residual monomer contents were calculated by the external standard method.The linearities were fairly good(γ>0.99).The average recoveries were 99.8 % with RSD of 0.18%.The limit of detection was 3.413 μg/mL.The contents of residual monomer in samples were complied with the specification requirements.This method is simple,rapid and accurate.更多还原