摘要
合成了端羟基乙丙齐聚物。用差减红外光谱对端羟基进行了分析。扣除了溶剂中三氯甲烷的干扰,用RUN.CAPR程序进行分峰,以正戊醇-1、3-甲基丁醇-1和丁醇-2为模型化合物标定伯、仲羟基吸收峰位置,并进行蜂面积积分,用模型化合物回归处理后得到定量公式:A=15.8667×10~3Cp+0.25674,以此求得乙丙齐聚物中伯、仲羟基的官能度。
A convenient method for the quantitative determination of terminal hydroxyl microstruc-tures in ethylene-propylene oligomer has been 'developed and evaluated by FT-IR spectroscopy. n-Amyl alcohol or 3-methyl-1-butyl alcohol and 2-butyl alcohol were used as model compounds to assign primary and secondary hydroxyl groups respectiyely. The 3640 cm-1 was selected as key band for measuring the primary hydroxyl group, and the 3623 cm-1 as key band for measuring the secondary hydroxyl group. By using 10 cm-1 path length cells and subtracting spectra to remove interferences of impurity in solution, it is suggested that a reasonably accurate estimate of terminal primary and secondary hydroxyl group would be given by the equation: a = 15.8667×103 Cp +0.25674. Since the spectral bands of primary and secondary hydroxyl group overlap, the spectral bands were first resolved. By a program of RUN. CAPR in Nicolet FT-IR 170sx, area of repective band was integrated to determine microstructure of terminal hydroxyl group.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1989年第1期6-11,共6页
Acta Polymerica Sinica
