Study on the Residual Endcapper in Biodegradable Poly(lactic acid)
LIU Yang
MA Lixia
WANG Qin
WANG Chuandong
FENG Shengyu
Abstract：A gas chromatography method was developed for the determination of lauryl alcohol residual in poly (lactic acid ).It focused on studying the gas chromatography method and the pretreatment method of PLA.The result of the experiment showed that a DB -624 column (30m ×0.53mm ×3.0μm)was adopted,the inlet temperature was controlled at 250 ℃ and the FID detector tem-perature was 260 ℃,the oven temperature was initially held at 60 ℃ for 3 min and was then programmed to 250 ℃ at 30 ℃/min and held for another 10 min,the linearity equation of lauryl alcohol was A =2717.3C -11.646 (γ=0.9998),the linear range was 0.01 mg/mL ~1.01mg/mL,and the average recovery was 99.21% (n =9),the RSD was 1.55%,the limit of detection was 0.0005 mg/mL.The limit of quantification was 0.001mg/mL,the method can achieve the purpose of lauryl alcohol quantitative detection.The analysis of lauryl alcohol residual in poly (lactic acid)verify the reliability of this method.
Keywords：Poly (lactic acid )Endcappergas chromatography (GC )Hydrogen flame ionization detector (FID )
Publication Date：2015-01-01
Online Publishing Date：2026-09-11(First online date of this platform, not the publication date of the document)
Pages：4( 106-109 )