FTIR Spectroscopy and Microscopy on the Interfacial Reaction and Interdiffusion of Styrene/Maleic Anhydride and Bis(amine)-Terminated Poly(tetrahydrofuran)
FTIR Spectroscopy and Microscopy on the Interfacial Reaction and Interdiffusion of Styrene/Maleic Anhydride and Bis(amine)-Terminated Poly(tetrahydrofuran)
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DOI：
10.1021/ma00118a037
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发表时间：
1995-07
期刊：
影响因子：
5.5
通讯作者：
R. Schaefer;Joerg Kressler;R. Neuber;R. Muelhaupt
中科院分区：
文献类型：
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作者：
R. Schaefer;Joerg Kressler;R. Neuber;R. Muelhaupt
用红外光谱和显微镜研究了苯乙烯-马来酸酐（SMA）无规共聚物与双胺端聚四氢呋喃（PTHF）的界面反应随温度和两种不同分子量的PTHF的函数关系。从转化时间图的初始斜率得到的反应速率常数在170至230°C范围内的值在3.6 × 10 -5和2.5 × 10 -4 s -1之间。结果表明，PTHF向SMA相的扩散发生在亚胺形成之前。因此，亚胺是在SMA相中形成的，可以通过在1702 cm -1处出现亚胺峰和在1780 cm -1处马来酸酐的相外羰基拉伸振动的减少来定量地估计。用FTIR显微镜研究了所用聚合物和生成的亚胺界面附近的浓度分布。
The interfacial reaction of a random copolymer of styrene and maleic anhydride (SMA) with bis(amine)-terminated poly(tetrahydrofuran) (PTHF) is studied by FTIR spectroscopy and microscopy as a function of temperature and for two different PTHF molecular weights. The reaction rate constants in the range from 170 to 230 °C, obtained from the initial slope of conversion-time plots, give values between 3.6 x 10 -5 and 2.5 x 10 -4 s -1 . It can be shown that the diffusion of the PTHF into the SMA phase occurs prior to the imide formation. Thus the imide is formed in the SMA phase and can be estimated quantitatively by the appearance of the imide peak at 1702 cm -1 and the decrease of the out-of-phase carbonyl stretching vibration of the maleic anhydride at 1780 cm -l . The concentration profiles near the interface of the used polymers and the formed imide are studied by FTIR microscopy.