Citation:
GAO Jun, XU Jian-Qiang, GAO Gui-Zhi, XU Yong-Ye, CHEN Su-Min. Near Infrared Spectroscopic Analysis of Tetrahydrofuran Polyreaction[J]. Chinese Journal of Applied Chemistry,
;2008, 25(12): 1435-1438.
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The solid content and the molecular mass of the polymer in mixed poly-tetrahydrofuran liquids were determined online by near-infrared spectroscopy(NIR) to explore the real-time monitoring of the polymerization process of tetrahydrofuran.The coefficients(R) of calibration models of the solid content and the molecular mass of the polymer derived by the partial least square method are 0.998 6 and 0.993 6 respectively,root mean square errors of crosss-verification(RMSECV) are 0.455 and 59.7.Based on external verification samples,the model was analyzed by means of t-verification.The results are 0.44 and 1.01,which are under the given significance level at 0.05(t0.05(20)=2.09) condition.Result of the near-infrared spectrum method was compared with that of standard method,and there existed no significance difference.
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